Publications (184)
A revisited Correction to the Halo Mass Function for local-type Primordial non-Gaussianity
Luca Fiorino, Sofia Contarini, Federico Marulli +4
We investigate the effect of primordial non-Gaussianities on halo number counts using N-body simulations with different values of . We show how current theore…
Cryptanalysis of a code-based full-time signature
Nicolas Aragon, Marco Baldi, Jean-Christophe Deneuville +3
We present an attack against a code-based signature scheme based on the Lyubashevsky protocol that was recently proposed by Song, Huang, Mu, Wu and Wang (SHMWW). The private key in…
Weak lensing predictions for coupled dark energy cosmologies at non-linear scales
Emma Beynon, Marco Baldi, David J. Bacon +2
We present non-linear weak lensing predictions for coupled dark energy models using the CoDECS simulations. We calculate the shear correlation function and error covariance expecte…
LDPC codes in the McEliece cryptosystem: attacks and countermeasures
Marco Baldi
The McEliece cryptosystem is a public-key cryptosystem based on coding theory that has successfully resisted cryptanalysis for thirty years. The original version, based on Goppa co…
Compact QC-LDPC Block and SC-LDPC Convolutional Codes for Low-Latency Communications
Massimo Battaglioni, Alireza Tasdighi, Marco Baldi +2
Low decoding latency and complexity are two important requirements of channel codes used in many applications, like machine-to-machine communications. In this paper, we show how th…
Modelling Non-Linear Effects of Dark Energy
Benjamin Bose, Marco Baldi, Alkistis Pourtsidou
We investigate the capabilities of perturbation theory in capturing non-linear effects of dark energy. We test constant and evolving models, as well as models involving moment…
Fitting and forecasting non-linear coupled dark energy
Santiago Casas, Luca Amendola, Marco Baldi +2
We consider cosmological models in which dark matter feels a fifth force mediated by the dark energy scalar field, also known as coupled dark energy. Our interest resides in estima…
Design and Analysis of Time-Invariant SC-LDPC Convolutional Codes With Small Constraint Length
Massimo Battaglioni, Alireza Tasdighi, Giovanni Cancellieri +2
In this paper, we deal with time-invariant spatially coupled low-density parity-check convolutional codes (SC-LDPC-CCs). Classic design approaches usually start from quasi-cyclic l…
Constraints on interacting dark energy models from galaxy Rotation Curves
Marco Baldi, Paolo Salucci
[Abridged] High-resolution N-body simulations have recently shown that the structural properties of highly nonlinear cosmic structures, as e.g. their average concentration at a giv…
Coding with Scrambling, Concatenation, and HARQ for the AWGN Wire-Tap Channel: A Security Gap Analysis
Marco Baldi, Marco Bianchi, Franco Chiaraluce
This study examines the use of nonsystematic channel codes to obtain secure transmissions over the additive white Gaussian noise (AWGN) wire-tap channel. Unlike the previous approa…
Structure formation in Multiple Dark Matter cosmologies with long-range scalar interactions
Marco Baldi
(Abridged) An interaction between Cold Dark Matter (CDM) and a classical scalar field playing the role of the cosmic dark energy (DE) might provide long-range dark interactions wit…
On a Family of Circulant Matrices for Quasi-Cyclic Low-Density Generator Matrix Codes
Marco Baldi, Federico Bambozzi, Franco Chiaraluce
We present a new class of sparse and easily invertible circulant matrices that can have a sparse inverse though not being permutation matrices. Their study is useful in the design…
Interleaved Product LDPC Codes
Marco Baldi, Giovanni Cancellieri, Franco Chiaraluce
Product LDPC codes take advantage of LDPC decoding algorithms and the high minimum distance of product codes. We propose to add suitable interleavers to improve the waterfall perfo…
The impact of constrained interacting dark energy on the bound-zone velocity profile
Jounghun Lee, Marco Baldi
We numerically study the effects of constrained interacting dark energy (CIDER) on the bound-zone velocity profiles around massive dark matter halos. Analyzing the CIDER simulation…
Weak Lensing Peaks in Simulated Light-Cones: Investigating the Coupling between Dark Matter and Dark Energy
Carlo Giocoli, Lauro Moscardini, Marco Baldi +2
In this paper, we study the statistical properties of weak lensing peaks in light-cones generated from cosmological simulations. In order to assess the prospects of such observable…
Using Graph Theory for Improving Machine Learning-based Detection of Cyber Attacks
Giacomo Zonneveld, Lorenzo Principi, Marco Baldi
Early detection of network intrusions and cyber threats is one of the main pillars of cybersecurity. One of the most effective approaches for this purpose is to analyze network tra…
Cosmological direct detection of dark energy: non-linear structure formation signatures of dark energy scattering with visible matter
Fulvio Ferlito, Sunny Vagnozzi, David F. Mota +1
We consider the recently proposed possibility that dark energy (DE) and baryons may scatter through a pure momentum exchange process, leaving the background evolution unaffected. E…
Early massive clusters and the bouncing coupled dark energy
Marco Baldi
The abundance of the most massive objects in the Universe at different epochs is a very sensitive probe of the cosmic background evolution and of the growth history of density pert…
Resource Allocation for Secure Gaussian Parallel Relay Channels with Finite-Length Coding and Discrete Constellations
Linda Senigagliesi, Marco Baldi, Stefano Tomasin
We investigate the transmission of a secret message from Alice to Bob in the presence of an eavesdropper (Eve) and many of decode-and-forward relay nodes. Each link comprises a set…
SPANSE: combining sparsity with density for efficient one-time code-based digital signatures
Marco Baldi, Franco Chiaraluce, Paolo Santini
The use of codes defined by sparse characteristic matrices, like QC-LDPC and QC-MDPC codes, has become an established solution to design secure and efficient code-based public-key…
Joint halo mass function for modified gravity and massive neutrinos I: simulations and cosmological forecasts
Steffen Hagstotz, Matteo Costanzi, Marco Baldi +1
We present a halo mass function accurate over the full relevant Hu-Sawicki parameter space based on spherical collapse calculations and calibrated to a suite of modified gra…
Lyman- forest and non-linear structure characterization in Fuzzy Dark Matter cosmologies
Matteo Nori, Riccardo Murgia, Vid IrÅ¡iÄ +2
Fuzzy Dark Matter (FDM) represents an alternative and intriguing description of the standard Cold Dark Matter (CDM) fluid, able to explain the lack of direct detection of dark matt…
Comparison of Statistical and Machine Learning Techniques for Physical Layer Authentication
Linda Senigagliesi, Marco Baldi, Ennio Gambi
In this paper we consider authentication at the physical layer, in which the authenticator aims at distinguishing a legitimate supplicant from an attacker on the basis of the chara…
The Effect of Coupled Dark Energy on the Alignment between Dark Matter and Galaxy Distributions in Clusters
Marco Baldi, Jounghun Lee, Andrea V. Maccio
We investigate the effects of a coupled Dark Energy (cDE) scalar field on the alignment between satellites and matter distributions in galaxy clusters. Using high-resolution N-body…
Effect of Auditory Stimuli on Electroencephalography-based Authentication
Nibras Abo Alzahab, Angelo Di Iorio, Marco Baldi +1
Opposed to standard authentication methods based on credentials, biometric-based authentication has lately emerged as a viable paradigm for attaining rapid and secure authenticatio…
Cold dark matter halos in Multi-coupled Dark Energy cosmologies: structural and statistical properties
Marco Baldi
The recently proposed Multi-coupled Dark Energy (McDE) scenario - characterised by two distinct Cold Dark Matter (CDM) particle species with opposite couplings to a Dark Energy sca…
Dark Energy Simulations
Marco Baldi
(Abridged) The growing role played by numerical N-body simulations in cosmological studies as a fundamental connection between theoretical modeling and direct observations has led…
On the Error Detection Capability of Combined LDPC and CRC Codes for Space Telecommand Transmissions
Marco Baldi, Nicola Maturo, Giacomo Ricciutelli +1
We present a method for estimating the undetected error rate when a cyclic redundancy check (CRC) is performed on the output of the decoder of short low-density parity-check (LDPC)…
Oscillating nonlinear large scale structure in growing neutrino quintessence
Marco Baldi, Valeria Pettorino, Luca Amendola +1
Growing Neutrino quintessence describes a form of dynamical dark energy that could explain why dark energy dominates the universe only in recent cosmological times. This scenario p…
Scaling relations of Fuzzy Dark Matter haloes I: individual systems in their cosmological environment
Matteo Nori, Marco Baldi
Dark matter models involving a very light bosonic particle, generally known as Fuzzy Dark Matter (FDM), have been recently attracting great interest in the cosmology community, as…
Performance assessment and design of finite length LDPC codes for the Gaussian wiretap channel
Marco Baldi, Giacomo Ricciutelli, Nicola Maturo +1
In this work we study the reliability and secrecy performance achievable by practical LDPC codes over the Gaussian wiretap channel. While several works have already addressed this…
A forgery attack on the Block.co blockchain-based digital credential certification system
Giacomo Zonneveld, Giulia Rafaiani, Marco Baldi
Certification of digital documents, such as academic credentials, seems a particularly suitable application for the use of blockchain and distributed ledger technologies. Indeed, t…
The halo mass function in interacting Dark Energy models
Weiguang Cui, Marco Baldi, Stefano Borgani
We present a detailed investigation of the effects that a direct interaction between Dark Energy (DE) and Cold Dark Matter (CDM) particles imprints on the Halo Mass Function (HMF)…
Cryptanalysis of a One-Time Code-Based Digital Signature Scheme
Paolo Santini, Marco Baldi, Franco Chiaraluce
We consider a one-time digital signature scheme recently proposed by Persichetti and show that a successful key recovery attack can be mounted with limited complexity. The attack w…
Enhanced public key security for the McEliece cryptosystem
Marco Baldi, Marco Bianchi, Franco Chiaraluce +2
This paper studies a variant of the McEliece cryptosystem able to ensure that the code used as the public key is no longer permutation-equivalent to the secret code. This increases…
Using LDGM Codes and Sparse Syndromes to Achieve Digital Signatures
Marco Baldi, Marco Bianchi, Franco Chiaraluce +2
In this paper, we address the problem of achieving efficient code-based digital signatures with small public keys. The solution we propose exploits sparse syndromes and randomly de…
The constraining power of the Marked Power Spectrum: an analytical study
Marco Marinucci, Gabriel Jung, Michele Liguori +8
The marked power spectrum - a two-point correlation function of a transformed density field - has emerged as a promising tool for extracting cosmological information from the large…
Parametric and Probabilistic Model Checking of Confidentiality in Data Dispersal Algorithms (Extended Version)
Marco Baldi, Alessandro Cucchiarelli, Linda Senigagliesi +2
Recent developments in cloud storage architectures have originated new models of online storage as cooperative storage systems and interconnected clouds. Such distributed environme…
Growing Matter
Luca Amendola, Marco Baldi, Christof Wetterich
We investigate quintessence cosmologies with a matter component consisting of particles with an increasing mass. While negligible in early cosmology, the appearance of a growing ma…
Emulators for the non-linear matter power spectrum beyond CDM
Hans Winther, Santiago Casas, Marco Baldi +4
Accurate predictions for the non-linear matter power spectrum are needed to confront theory with observations in current and near future weak lensing and galaxy clustering surveys.…
Analysis of reaction and timing attacks against cryptosystems based on sparse parity-check codes
Paolo Santini, Massimo Battaglioni, Franco Chiaraluce +1
In this paper we study reaction and timing attacks against cryptosystems based on sparse parity-check codes, which encompass low-density parity-check (LDPC) codes and moderate-dens…
A Novel Attack to the Permuted Kernel Problem
Paolo Santini, Marco Baldi, Franco Chiaraluce
The Permuted Kernel Problem (PKP) asks to find a permutation of a given vector belonging to the kernel of a given matrix. The PKP is at the basis of PKP-DSS, a post-quantum signatu…
Breaking cosmic degeneracies: Disentangling neutrinos and modified gravity with kinematic information
Steffen Hagstotz, Max Gronke, David Mota +1
Searches for modified gravity in the large-scale structure try to detect the enhanced amplitude of density fluctuations caused by the fifth force present in many of these theories.…
Statistical and Machine Learning-based Decision Techniques for Physical Layer Authentication
Linda Senigagliesi, Marco Baldi, Ennio Gambi
In this paper we assess the security performance of key-less physical layer authentication schemes in the case of time-varying fading channels, considering both partial and no chan…
Soft McEliece: MDPC code-based McEliece cryptosystems with very compact keys through real-valued intentional errors
Marco Baldi, Paolo Santini, Franco Chiaraluce
We propose to use real-valued errors instead of classical bit flipping intentional errors in the McEliece cryptosystem based on moderate-density parity-check (MDPC) codes. This all…
The CoDECS project: a publicly available suite of cosmological N-body simulations for interacting dark energy models
Marco Baldi
We present the largest set of N-body and hydrodynamical simulations to date for cosmological models featuring a direct interaction between the Dark Energy (DE) scalar field, respon…
Practical LDPC coded modulation schemes for the fading broadcast channel with confidential messages
Marco Baldi, Nicola Maturo, Giacomo Ricciutelli +1
The broadcast channel with confidential messages is a well studied scenario from the theoretical standpoint, but there is still lack of practical schemes able to achieve some fixed…
Optimization of a Reed-Solomon code-based protocol against blockchain data availability attacks
Paolo Santini, Giulia Rafaiani, Massimo Battaglioni +2
ASBK (named after the authors' initials) is a recent blockchain protocol tackling data availability attacks against light nodes, employing two-dimensional Reed-Solomon codes to enc…
Quijote-PNG: Quasi-maximum likelihood estimation of Primordial Non-Gaussianity in the non-linear halo density field
Gabriel Jung, Dionysios Karagiannis, Michele Liguori +6
We study primordial non-Gaussian signatures in the redshift-space halo field on non-linear scales, using a quasi-maximum likelihood estimator based on optimally compressed power sp…
LDPC coded transmissions over the Gaussian broadcast channel with confidential messages
Marco Baldi, Nicola Maturo, Giacomo Ricciutelli +1
We design and assess some practical low-density parity-check (LDPC) coded transmission schemes for the Gaussian broadcast channel with confidential messages (BCC). This channel mod…
MAGIC: A Method for Assessing Cyber Incidents Occurrence
Massimo Battaglioni, Giulia Rafaiani, Franco Chiaraluce +1
The assessment of cyber risk plays a crucial role for cybersecurity management, and has become a compulsory task for certain types of companies and organizations. This makes the de…
Non-linear damping of superimposed primordial oscillations on the matter power spectrum in galaxy surveys
Mario Ballardini, Riccardo Murgia, Marco Baldi +2
Galaxy surveys are an important probe for superimposed oscillations on the primordial power spectrum of curvature perturbations, which are predicted in several theoretical models o…
Cosmic voids uncovered -- first-order statistics of depressions in the biased density field
Tommaso Ronconi, Sofia Contarini, Federico Marulli +2
Cosmic voids are the major volume component in the matter distribution of the Universe. They posses great potential for constraining dark energy as well as for testing theories of…
Security and complexity of the McEliece cryptosystem based on QC-LDPC codes
Marco Baldi, Marco Bianchi, Franco Chiaraluce
In the context of public key cryptography, the McEliece cryptosystem represents a very smart solution based on the hardness of the decoding problem, which is believed to be able to…
BF-Max: an Efficient Bit Flipping Decoder with Predictable Decoding Failure Rate
Alessio Baldelli, Marco Baldi, Franco Chiaraluce +1
The Bit-Flipping (BF) decoder, thanks to its very low computational complexity, is widely employed in post-quantum cryptographic schemes based on Moderate Density Parity Check code…
On the road to percent accuracy V: the non-linear power spectrum beyond CDM with massive neutrinos and baryonic feedback
Benjamin Bose, Bill S. Wright, Matteo Cataneo +7
In the context of forthcoming galaxy surveys, to ensure unbiased constraints on cosmology and gravity when using non-linear structure information, percent-level accuracy is require…
The effect of interacting dark energy on local measurements of the Hubble constant
Io Odderskov, Marco Baldi, Luca Amendola
In the current state of cosmology, where cosmological parameters are being measured to percent accuracy, it is essential to understand all sources of error to high precision. In th…
The Impact of Coupled Dark Energy Cosmologies on the High-Redshift Intergalactic Medium
Marco Baldi, Matteo Viel
We present an analysis of high-resolution hydrodynamical N-body simulations of coupled dark energy cosmologies which focusses on the statistical properties of the transmitted Lyman…
Can Coupled Dark Energy Speed Up the Bullet Cluster?
Jounghun Lee, Marco Baldi
It has been recently shown that the observed morphological properties of the Bullet Cluster can be accurately reproduced in hydrodynamical simulations only when the infall pairwise…
The nonlinear evolution of large scale structures in Growing Neutrino cosmologies
Marco Baldi
We present the results of the first N-body simulations of the Growing Neutrino scenario, as recently discussed in Baldi et al. (2011). Our results have shown for the first time how…
Nuw CDM cosmology from the weak lensing convergence PDF
Aoife Boyle, Cora Uhlemann, Oliver Friedrich +5
Pinning down the total neutrino mass and the dark energy equation of state is a key aim for upcoming galaxy surveys. Weak lensing is a unique probe of the total matter distribution…
The mass accretion rate of galaxy clusters: a measurable quantity
Cristiano De Boni, Ana Laura Serra, Antonaldo Diaferio +2
We explore the possibility of measuring the mass accretion rate (MAR) of galaxy clusters from their mass profiles beyond the virial radius . We derive the accretion rate f…
A Physical Layer Secured Key Distribution Technique for IEEE 802.11g Wireless Networks
Marco Baldi, Marco Bianchi, Nicola Maturo +1
Key distribution and renewing in wireless local area networks is a crucial issue to guarantee that unauthorized users are prevented from accessing the network. In this paper, we pr…
Testing the Reliability of Fast Methods for Weak Lensing Simulations: WL-MOKA on PINOCCHIO
Carlo Giocoli, Pierluigi Monaco, Lauro Moscardini +4
The generation of simulated convergence maps is of key importance in fully exploiting weak lensing by Large Scale Structure (LSS) from which cosmological parameters can be derived.…
Disentangling interacting dark energy cosmologies with the three-point correlation function
Michele Moresco, Federico Marulli, Marco Baldi +2
We investigate the possibility of constraining coupled dark energy (cDE) cosmologies using the three-point correlation function (3PCF). Making use of the CoDECS N-body simulations,…
High-z massive clusters as a test for dynamical coupled dark energy
Marco Baldi, Valeria Pettorino
The recent detection (Jee etal 2009) of the massive cluster XMMU J2235.3-2557 at a redshift z = 1.4, with an estimated mass M = 6.4 +- 1.2 X 10^14 M_sol, has been claimed to be a p…
Rate-compatible LDPC Codes based on Primitive Polynomials and Golomb Rulers
Massimo Battaglioni, Marco Baldi, Franco Chiaraluce +1
We introduce and study a family of rate-compatible Low-Density Parity-Check (LDPC) codes characterized by very simple encoders. The design of these codes starts from simplex codes,…
: Accurate non-Gaussian initial conditions with arbitrary bispectrum for N-body simulations
Emanuele Fondi, Licia Verde, Marco Baldi +3
Primordial non-Gaussianity is predicted by various inflationary models, and N-body simulations are a crucial tool for studying its imprints on large-scale structure. In this work,…
Quijote-PNG: The Information Content of the Halo Mass Function
Gabriel Jung, Andrea Ravenni, Marco Baldi +8
We study signatures of primordial non-Gaussianity (PNG) in the redshift-space halo field on non-linear scales, using a combination of three summary statistics, namely the halo mass…
MG-NECOLA: A Field-Level Emulator for Gravity and Massive Neutrino Cosmologies
J. Bayron Orjuela-Quintana, Mauricio Reyes, Elena Giusarma +3
Accurate modeling of non-linear gravitational dynamics is essential for constraining extensions to the standard cosmological model using large-scale structure observations. While h…
Towards unveiling the large-scale nature of gravity with the wavelet scattering transform
Georgios Valogiannis, Francisco Villaescusa-Navarro, Marco Baldi
We present the first application of the Wavelet Scattering Transform (WST) in order to constrain the nature of gravity using the three-dimensional (3D) large-scale structure of the…
Linear Perturbation constraints on Multi-coupled Dark Energy
Arpine Piloyan, Valerio Marra, Marco Baldi +1
The Multi-coupled Dark Energy (McDE) scenario has been recently proposed as a specific example of a cosmological model characterized by a non-standard physics of the dark sector of…
Probing Cosmic Expansion and Early Universe with Einstein Telescope
Angelo Ricciardone, Mairi Sakellariadou, Archisman Ghosh +52
Over the next two decades, gravitational-wave (GW) observations are expected to evolve from a discovery-driven endeavour into a precision tool for astrophysics, cosmology, and fund…
Data Certification Strategies for Blockchain-based Traceability Systems
Giacomo Zonneveld, Giulia Rafaiani, Massimo Battaglioni +1
The use of blockchains for data certification and traceability is now well established in both the literature and practical applications. However, while blockchain-based certificat…
Disentangling Modified Gravity and Massive Neutrinos with Intrinsic Shape Alignments of Massive Halos
Jounghun Lee, Suho Ryu, Marco Baldi
We present two new diagnostics based on the intrinsic shape alignments of group/cluster size dark matter halos to disentangle the effect of gravity from that of massive neut…
On the road to percent accuracy VI: the nonlinear power spectrum for interacting dark energy with baryonic feedback and massive neutrinos
Pedro Carrilho, Karim Carrion, Benjamin Bose +4
Understanding nonlinear structure formation is crucial for fully exploring the data generated by stage IV surveys, requiring accurate modelling of the power spectrum. This is chall…
Implementation of Ethereum Accounts and Transactions on Embedded IoT Devices
Giulia Rafaiani, Paolo Santini, Marco Baldi +1
The growing interest in Internet of Things (IoT) and Industrial IoT (IIoT) poses the challenge of finding robust solutions for the certification and notarization of data produced a…
Hydrodynamical N-body simulations of coupled dark energy cosmologies
Marco Baldi, Valeria Pettorino, Georg Robbers +1
If the accelerated expansion of the Universe at the present epoch is driven by a dark energy scalar field, there may well be a non-trivial coupling between the dark energy and the…
Leveraging Angle of Arrival Estimation against Impersonation Attacks in Physical Layer Authentication
Thuy M. Pham, Linda Senigagliesi, Marco Baldi +3
In this paper, we investigate the utilization of the angle of arrival (AoA) as a feature for robust physical layer authentication (PLA). While most of the existing approaches to PL…
Breaking the Cosmic Degeneracy between Modified Gravity and Massive Neutrinos with the Cosmic Web
Junsup Shim, Jounghun Lee, Marco Baldi
In a recent work, Baldi et al. highlighted the issue of cosmic degeneracies, consisting in the fact that the standard statistics of the large-scale structure might not be sufficien…
A class of punctured simplex codes which are proper for error detection
Marco Baldi, Marco Bianchi, Franco Chiaraluce +1
Binary linear [n,k] codes that are proper for error detection are known for many combinations of n and k. For the remaining combinations, existence of proper codes is conjectured.…
On the Error Probability of Short Concatenated Polar and Cyclic Codes with Interleaving
Giacomo Ricciutelli, Marco Baldi, Franco Chiaraluce +1
In this paper, the analysis of the performance of the concatenation of a short polar code with an outer binary linear block code is addressed from a distance spectrum viewpoint. Th…
Modified Gravity-GADGET: A new code for cosmological hydrodynamical simulations of modified gravity models
Ewald Puchwein, Marco Baldi, Volker Springel
We present a new massively parallel code for N-body and cosmological hydrodynamical simulations of modified gravity models. The code employs a multigrid-accelerated Newton-Gauss-Se…
Clarifying the effects of interacting dark energy on linear and nonlinear structure formation processes
Marco Baldi
We present a detailed numerical study of the impact that cosmological models featuring a direct interaction between the Dark Energy component that drives the accelerated expansion…
Taming assembly bias for primordial non-Gaussianity
Emanuele Fondi, Licia Verde, Francisco Villaescusa-Navarro +7
Primordial non-Gaussianity of the local type induces a strong scale-dependent bias on the clustering of halos in the late-time Universe. This signature is particularly promising to…
Cosmological exploitation of the size function of cosmic voids identified in the distribution of biased tracers
Sofia Contarini, Tommaso Ronconi, Federico Marulli +3
Cosmic voids are large underdense regions that, together with galaxy clusters, filaments and walls, build up the large-scale structure of the Universe. The void size function provi…
Time dependent couplings in the dark sector: from background evolution to nonlinear structure formation
Marco Baldi
We present a complete numerical study of cosmological models with a time dependent coupling between the dark energy component driving the present accelerated expansion of the Unive…
Analysis of the error correction capability of LDPC and MDPC codes under parallel bit-flipping decoding and application to cryptography
Paolo Santini, Massimo Battaglioni, Marco Baldi +1
Iterative decoders used for decoding low-density parity-check (LDPC) and moderate-density parity-check (MDPC) codes are not characterized by a deterministic decoding radius and the…
Weak Lensing Light-Cones in Modified Gravity simulations with and without Massive Neutrinos
Carlo Giocoli, Marco Baldi, Lauro Moscardini
We present a novel suite of cosmological N-body simulations called the DUSTGRAIN-pathfinder, implementing simultaneously the effects of an extension to General Relativity in the fo…
Multiple Lensing of the Cosmic Microwave Background anisotropies
Matteo Calabrese, Carmelita Carbone, Giulio Fabbian +2
We study the gravitational lensing effect on the Cosmic Microwave Background (CMB) anisotropies performing a ray-tracing of the primordial CMB photons through intervening large-sca…
AoA-Based Physical Layer Authentication in Analog Arrays under Impersonation Attacks
Muralikrishnan Srinivasan, Linda Senigagliesi, Hui Chen +3
We discuss the use of angle of arrival (AoA) as an authentication measure in analog array multiple-input multiple-output (MIMO) systems. A base station equipped with an analog arra…
Quijote-PNG: Optimizing the summary statistics to measure Primordial non-Gaussianity
Gabriel Jung, Andrea Ravenni, Michele Liguori +4
We apply a suite of different estimators to the Quijote-PNG halo catalogues to find the best approach to constrain Primordial non-Gaussianity (PNG) at non-linear cosmological scale…
Distinguishing standard and modified gravity cosmologies with machine learning
Austin Peel, Florian Lalande, Jean-Luc Starck +5
We present a convolutional neural network to classify distinct cosmological scenarios based on the statistically similar weak-lensing maps they generate. Modified gravity (MG) mode…
Design and Implementation of a Digital Signature Scheme Based on Low-density Generator Matrix Codes
Marco Baldi, Alessandro Barenghi, Franco Chiaraluce +4
In this paper we consider a post-quantum digital signature scheme based on low-density generator matrix codes and propose efficient algorithmic solutions for its implementation. We…
A Code-specific Conservative Model for the Failure Rate of Bit-flipping Decoding of LDPC Codes with Cryptographic Applications
Paolo Santini, Alessandro Barenghi, Gerardo Pelosi +2
Characterizing the decoding failure rate of iteratively decoded Low- and Moderate-Density Parity Check (LDPC/MDPC) codes is paramount to build cryptosystems based on them, able to…
On fuzzy syndrome hashing with LDPC coding
Marco Baldi, Marco Bianchi, Franco Chiaraluce +2
The last decades have seen a growing interest in hash functions that allow some sort of tolerance, e.g. for the purpose of biometric authentication. Among these, the syndrome fuzzy…
Raytracing simulations of coupled dark energy models
Francesco Pace, Marco Baldi, Lauro Moscardini +2
Dark matter and dark energy are usually assumed to couple only gravitationally. An extension to this picture is to model dark energy as a scalar field coupled directly to cold dark…
Modified Gravity N-body Code Comparison Project
Hans A. Winther, Fabian Schmidt, Alexandre Barreira +12
Self-consistent -body simulations of modified gravity models are a key ingredient to obtain rigorous constraints on deviations from General Relativity using large-scale st…
Multiple Dark Matter as a self-regulating mechanism for dark sector interactions
Marco Baldi
(Abridged) Present cosmological constraints and the absence of a direct detection and identification of any dark matter particle candidate leave room to the possibility that the da…
Secrecy Transmission on Block Fading Channels: Theoretical Limits and Performance of Practical Codes
Marco Baldi, Marco Bianchi, Franco Chiaraluce +3
We consider a system where an agent (Alice) aims at transmitting a message to a second agent (Bob) over a set of parallel channels, while keeping it secret from a third agent (Eve)…