Publications (333)
Energy Allocation for Multi-User Cooperative Molecular Communication Systems in the Internet of Bio-Nano Things
Dongliang Jing, Lin Lin, Andrew W. Eckford
Cooperative molecular communication (MC) is a promising technology for facilitating communication between nanomachines in the Internet of Bio-Nano Things (IoBNT) field. However, th…
Fermi/GBM Observations of SGR J0501+4516 Bursts
Lin Lin, Chryssa Kouveliotou, Matthew G. Baring +27
We present our temporal and spectral analyses of 29 bursts from SGR J0501+4516, detected with the Gamma-ray Burst Monitor onboard the Fermi Gamma-ray Space Telescope during the 13…
A Kaczmarz-inspired approach to accelerate the optimization of neural network wavefunctions
Gil Goldshlager, Nilin Abrahamsen, Lin Lin
Neural network wavefunctions optimized using the variational Monte Carlo method have been shown to produce highly accurate results for the electronic structure of atoms and small m…
Quasi-Periodic Peak Energy Oscillations in X-ray Bursts from SGR J1935+2154
Oliver J. Roberts, Matthew G. Baring, Daniela Huppenkothen +6
Magnetars are young neutron stars powered by the strongest magnetic fields in the Universe (10 G). Their transient X-ray emission usually manifests as short (a few hundre…
Staggered mesh method for correlation energy calculations of solids: Second order Møller-Plesset perturbation theory
Xin Xing, Xiaoxu Li, Lin Lin
The calculation of the MP2 correlation energy for extended systems can be viewed as a multi-dimensional integral in the thermodynamic limit, and the standard method for evaluating…
Adaptively Compressed Exchange Operator
Lin Lin
The Fock exchange operator plays a central role in modern quantum chemistry. The large computational cost associated with the Fock exchange operator hinders Hartree-Fock calculatio…
Burst and Outburst Characteristics of Magnetar 4U 0142+61
Ersin Gogus, Lin Lin, Oliver J. Roberts +10
We have compiled the most comprehensive burst sample from magnetar 4U 0142+61, comprising 27 bursts from its three burst-active episodes in 2011, 2012 and the latest one in 2015 ob…
Physics of Strong Magnetism with eXTP
Mingyu Ge, Long Ji, Roberto Taverna +47
In this paper we present the science potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission, in its new configuration, for studies of strongly magnetized compact obj…
Random coordinate descent: a simple alternative for optimizing parameterized quantum circuits
Zhiyan Ding, Taehee Ko, Jiahao Yao +2
Variational quantum algorithms rely on the optimization of parameterized quantum circuits in noisy settings. The commonly used back-propagation procedure in classical machine learn…
Is there evidence for exponential quantum advantage in quantum chemistry?
Seunghoon Lee, Joonho Lee, Huanchen Zhai +15
The idea to use quantum mechanical devices to simulate other quantum systems is commonly ascribed to Feynman. Since the original suggestion, concrete proposals have appeared for si…
Physics and astrophysics of strong magnetic field systems with eXTP
Andrea Santangelo, Silvia Zane, Hua Feng +38
In this paper we present the science potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies of strongly magnetized objects. We will focus on the physics…
GRB 210121A: A Typical Fireball Burst Detected by Two Small Missions
Xiangyu Ivy Wang, Xutao Zheng, Shuo Xiao +48
The Chinese CubeSat Mission, Gamma Ray Integrated Detectors (GRID), recently detected its first gamma-ray burst, GRB 210121A, which was jointly observed by the Gravitational wave h…
Revisit the periodicity of SGR J1935+2154 bursts with updated sample
Sheng-Lun Xie, Ce Cai, Shao-Lin Xiong +30
Since FRB 200428 has been found to be associated with an X-ray burst from the Galactic magnetar SGR J1935+2154, it is interesting to explore whether the magnetar bursts also follow…
Insight-HXMT and GECAM-C observations of the brightest-of-all-time GRB 221009A
Zheng-Hua An, S. Antier, Xing-Zi Bi +174
GRB 221009A is the brightest gamma-ray burst ever detected since the discovery of this kind of energetic explosions. However, an accurate measurement of the prompt emission propert…
Prospects for Time-Domain and Multi-Messenger Science with eXTP
Shu-Xu Yi, Wen Zhao, Ren-Xin Xu +75
In this new era of time-domain and multi-messenger astronomy, various new transients and new phenomena are constantly being discovered thanks to the rapid advances in observations,…
Energy Efficient Transmitter Creation by Consuming Free Energy in Molecular Communication
Dongliang Jing, Linjuan Li, Zhen Cheng +2
Information molecules play a crucial role in molecular communication (MC), acting as carriers for information transfer. A common approach to get information molecules in MC involve…
The SFR-radius connection: data and implications for wind strength and halo concentration
Lin Lin, S. M. Faber, David C. Koo +26
This paper is one in a series that explores the importance of radius as a second parameter in galaxy evolution. The topic investigated here is the relationship between star formati…
Anti-symmetric Barron functions and their approximation with sums of determinants
Nilin Abrahamsen, Lin Lin
A fundamental problem in quantum physics is to encode functions that are completely anti-symmetric under permutations of identical particles. The Barron space consists of high-dime…
Compressed representation of Kohn-Sham orbitals via selected columns of the density matrix
Anil Damle, Lin Lin, Lexing Ying
Given a set of Kohn-Sham orbitals from an insulating system, we present a simple, robust, efficient and highly parallelizable method to construct a set of, optionally orthogonal, l…
A Stochastic Generalized Ginzburg-Landau Equation Driven by Jump Noise
Lin Lin, Hongjun Gao
This paper is concerned with the stochastic generalized Ginzburg-Landau equation driven by a multiplicative noise of jump type. By a prior estimate, weak convergence and monotonici…
Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar -- Swift J1818.0-1607
Zhi-Peng Huang, Zhen Yan, Zhi-Qiang Shen +7
Swift J1818.0-1607 discovered in early 2020 is not only the fifth magnetar known with periodic radio pulsations but also the fastest rotating one. Simultaneous 2.25 and 8.60 GHz ob…
Efficient quantum Gibbs samplers with Kubo--Martin--Schwinger detailed balance condition
Zhiyan Ding, Bowen Li, Lin Lin
Lindblad dynamics and other open-system dynamics provide a promising path towards efficient Gibbs sampling on quantum computers. In these proposals, the Lindbladian is obtained via…
Fast real-time time-dependent density functional theory calculations with the parallel transport gauge
Weile Jia, Dong An, Lin-Wang Wang +1
Real-time time-dependent density functional theory (RT-TDDFT) is known to be hindered by the very small time step (attosecond or smaller) needed in the numerical simulation due to…
Ground state preparation and energy estimation on early fault-tolerant quantum computers via quantum eigenvalue transformation of unitary matrices
Yulong Dong, Lin Lin, Yu Tong
Under suitable assumptions, the algorithms in [Lin, Tong, Quantum 2020] can estimate the ground state energy and prepare the ground state of a quantum Hamiltonian with near-optimal…
Quantum Filtering and Analysis of Multiplicities in Eigenvalue Spectra
Zhiyan Ding, Lin Lin, Yilun Yang +1
Fine-grained spectral properties of quantum Hamiltonians, including both eigenvalues and their multiplicities, provide useful information for characterizing many-body quantum syste…
Multipole Representation of the Fermi Operator with Application to the Electronic Structure Analysis of Metallic Systems
Lin Lin, Jianfeng Lu, Roberto Car +1
We propose a multipole representation of the Fermi-Dirac function and the Fermi operator, and use this representation to develop algorithms for electronic structure analysis of met…
RAG4ITOps: A Supervised Fine-Tunable and Comprehensive RAG Framework for IT Operations and Maintenance
Tianyang Zhang, Zhuoxuan Jiang, Shengguang Bai +4
With the ever-increasing demands on Question Answering (QA) systems for IT operations and maintenance, an efficient and supervised fine-tunable framework is necessary to ensure the…
Interacting models for twisted bilayer graphene: a quantum chemistry approach
Fabian M. Faulstich, Kevin D. Stubbs, Qinyi Zhu +7
The nature of correlated states in twisted bilayer graphene (TBG) at the magic angle has received intense attention in recent years. We present a numerical study of an interacting…
Adaptive Weighted Multi-View Clustering
Shuo Shuo Liu, Lin Lin
Learning multi-view data is an emerging problem in machine learning research, and nonnegative matrix factorization (NMF) is a popular dimensionality-reduction method for integratin…
One for All: A Non-Linear Transformer can Enable Cross-Domain Generalization for In-Context Reinforcement Learning
Bowen He, Juncheng Dong, Lin Lin +1
A central challenge in reinforcement learning (RL) is to learn models that generalize beyond the tasks on which they are trained, a goal traditionally pursued through multi-task an…
AuricularWorld: Hierarchical Action-Guided World Modeling for Fine-Grained Auricular Structure Segmentation from CT Scans
Jingwen Yang, Senmao Wang, Luoyao Kang +6
The paper introduces a hierarchical, action‑guided world‑model framework that iteratively refines latent representations to improve fine‑grained segmentation of ear cartilage and s…
The Fermi GBM Gamma-Ray Burst Spectral Catalog: Four Years Of Data
David Gruber, Adam Goldstein, Victoria Weller von Ahlefeld +29
In this catalog we present the updated set of spectral analyses of GRBs detected by the Fermi Gamma-Ray Burst Monitor (GBM) during its first four years of operation. It contains tw…
The magnetar model's energy crisis for a prolific repeating fast radio burst source
Jun-Shuo Zhang, Tian-Cong Wang, Pei Wang +61
Fast radio bursts (FRBs) are widely considered to originate from magnetars that power the explosion through releasing magnetic energy. Active repeating FRBs have been seen to produ…
Towards the Kantorovich dual solution for strictly correlated electrons in atoms and molecules
Christian B. Mendl, Lin Lin
The many-body Coulomb repulsive energy of strictly correlated electrons provides direct information of the exact Hohenberg-Kohn exchange-correlation functional in the strong intera…
The Narrow-Line Seyfert 1 Phenomenon: Accretion State Versus Host Galaxy Properties
Kaizheng Guo, Hassen M. Yesuf, Lei Hao +3
The physical origin of the narrow-line Seyfert 1 (NLS1) and broad-line Seyfert 1 (BLS1) dichotomy remains debated, with competing scenarios invoking host-galaxy evolution or intrin…
Two-level Chebyshev filter based complementary subspace method: pushing the envelope of large-scale electronic structure calculations
Amartya S. Banerjee, Lin Lin, Phanish Suryanarayana +2
We describe a novel iterative strategy for Kohn-Sham density functional theory calculations aimed at large systems (> 1000 electrons), applicable to metals and insulators alike. In…
X-ray Perspective of the Twisted Magnetospheres of Magnetars
Shan-Shan Weng, Ersin Gogus, Tolga Guver +1
Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are recognized as the most promising magnetar candidates, as indicated by their energetic bursts and rapid spin-d…
Searching for quasi-periodicities in short transients: the curious case of GRB 230307A
Daniela Huppenkothen, Matthew G. Baring, Mete Uzuner +5
Gamma-ray bursts (GRBs) are the most powerful explosions in the Universe; their energy release reache s us from the end of the re-ionization era, making them invaluable cosmologica…
Mock Observations for the CSST Mission: Multi-Channel Imager--Instrument Simulation
Zhao-Jun Yan, Huan-Yuan Shan, Zhen-Ya Zheng +40
The Chinese Space Station Survey Telescope (CSST), a two-meter aperture astronomical space telescope under China's manned space program, is equipped with multiple back-end scientif…
Dense outputs from quantum simulations
Jin-Peng Liu, Lin Lin
The quantum dense output problem is the process of evaluating time-accumulated observables from time-dependent quantum dynamics using quantum computers. This problem arises frequen…
Dissipative phase decision without ground-state preparation
Hao-En Li, Yilun Yang, Lin Lin
We propose a dynamical approach to identifying ground-state quantum phases through short-time dissipative cooling. Rather than determining the phase by preparing highly accurate ap…
Spectroscopic Observations and Emission-Line Diagnoses for H ii Regions in the Late-Type Spiral Galaxy NGC 2403
Qi-Ming Wu, Ye-Wei Mao, Lin Lin +2
Being ionized nebulae where star formation events take place, H ii regions are not only natural laboratories for studying physical processes of star formation and photoionization b…
Robust iterative method for symmetric quantum signal processing in all parameter regimes
Yulong Dong, Lin Lin, Hongkang Ni +1
This paper addresses the problem of solving nonlinear systems in the context of symmetric quantum signal processing (QSP), a powerful technique for implementing matrix functions on…
Eliminating nearfield coupling in dense high quality factor phase gradient metasurfaces
Samuel Ameyaw, Lin Lin, Bo Zhao +2
High Q phase gradient metasurfaces are becoming promising elements for revolutionizing light manipulation but near-field coupling typically forces a trade-off between quality facto…
A structure preserving Lanczos algorithm for computing the optical absorption spectrum
Meiyue Shao, Felipe H. da Jornada, Lin Lin +3
We present a new structure preserving Lanczos algorithm for approximating the optical absorption spectrum in the context of solving full Bethe--Salpeter equation without Tamm--Danc…
BioMetaphor: AI-Generated Biodata Representations for Virtual Co-Present Events
Lin Lin, Ming Wu, Anyu Ren +3
In virtual or hybrid co-present events, biodata is emerging as a new paradigm of social cues. While it is able to reveal individuals' inner states, the technology-mediated represen…
A posteriori error estimates for discontinuous Galerkin methods using non-polynomial basis functions. Part II: Eigenvalue problems
Lin Lin, Benjamin Stamm
We present the first systematic work for deriving a posteriori error estimates for general non-polynomial basis functions in an interior penalty discontinuous Galerkin (DG) formula…
MathMistake Checker: A Comprehensive Demonstration for Step-by-Step Math Problem Mistake Finding by Prompt-Guided LLMs
Tianyang Zhang, Zhuoxuan Jiang, Haotian Zhang +2
We propose a novel system, MathMistake Checker, designed to automate step-by-step mistake finding in mathematical problems with lengthy answers through a two-stage process. The sys…
Time-dependent unbounded Hamiltonian simulation with vector norm scaling
Dong An, Di Fang, Lin Lin
The accuracy of quantum dynamics simulation is usually measured by the error of the unitary evolution operator in the operator norm, which in turn depends on certain norm of the Ha…
SDSS-IV MaNGA: the indispensable role of bars in enhancing the central star formation of low- galaxies
Lin Lin, Cheng Li, Cheng Du +8
We analyse two-dimensional maps and radial profiles of EW(H), EW(H), and D(4000) of low-redshift galaxies using integral field spectroscopy from the MaNGA survey. Out…
Burst and Persistent Emission Properties during the Recent Active Episode of the Anomalous X-ray Pulsar 1E 1841-045
Lin Lin, Chryssa Kouveliotou, Ersin Gogus +19
Swift/BAT detected the first burst from 1E 1841-045 in May 2010 with intermittent burst activity recorded through at least July 2011. Here we present Swift and Fermi/GBM observatio…
SDSS-IV MaNGA: Star formation cessation in low-redshift galaxies I. Dependence on stellar mass and structural properties
Enci Wang, Cheng Li, Ting Xiao +8
We investigate radial gradients in the recent star formation history (SFH) using 1917 galaxies with and integral-field spectroscopy from the ongoing MaNGA survey. For…
Structured Quasi-Newton Methods for Optimization with Orthogonality Constraints
Jiang Hu, Bo Jiang, Lin Lin +2
In this paper, we study structured quasi-Newton methods for optimization problems with orthogonality constraints. Note that the Riemannian Hessian of the objective function require…
Interpolative Separable Density Fitting Decomposition for Accelerating Hybrid Density Functional Calculations With Applications to Defects in Silicon
Wei Hu, Lin Lin, Chao Yang
We present a new efficient way to perform hybrid density functional theory (DFT) based electronic structure calculation. The new method uses an interpolative separable density fitt…
Large Size Scatter of Passively Evolving Lensed Galaxies at z~2 in CLASH
Lulu Fan, Yang Chen, Xinzhong Er +3
In a systematic search over 11 cluster fields from Cluster Lensing And Supernova survey with Hubble (CLASH) we identify ten passively evolving massive galaxies at redshift z~2.We d…
Adaptive local basis set for Kohn-Sham density functional theory in a discontinuous Galerkin framework II: Force, vibration, and molecular dynamics calculations
Gaigong Zhang, Lin Lin, Wei Hu +2
Recently, we have proposed the adaptive local basis set for electronic structure calculations based on Kohn-Sham density functional theory in a pseudopotential framework. The adapt…
On the energy landscape of symmetric quantum signal processing
Jiasu Wang, Yulong Dong, Lin Lin
Symmetric quantum signal processing provides a parameterized representation of a real polynomial, which can be translated into an efficient quantum circuit for performing a wide ra…
Numerical integration for ab initio many-electron self energy calculations within the GW approximation
Fang Liu, Lin Lin, Derek Vigil-Fowler +8
We present a numerical integration scheme for evaluating the convolution of a Green's function with a screened Coulomb potential on the real axis in the GW approximation of the sel…
Variational formulation for Wannier functions with entangled band structure
Anil Damle, Antoine Levitt, Lin Lin
Wannier functions provide a localized representation of spectral subspaces of periodic Hamiltonians, and play an important role for interpreting and accelerating Hartree-Fock and K…
Even shorter quantum circuit for phase estimation on early fault-tolerant quantum computers with applications to ground-state energy estimation
Zhiyan Ding, Lin Lin
We develop a phase estimation method with a distinct feature: its maximal runtime (which determines the circuit depth) is , where is the target precision, and the preco…
Characterizing Ultraviolet and Infrared Observational Properties for Galaxies. II. Features of Attenuation Law
Ye-Wei Mao, Xu Kong, Lin Lin
Variations in the attenuation law have a significant impact on observed spectral energy distributions for galaxies. As one important observational property for galaxies at ultravio…
The two-loop supersymmetric corrections to lepton anomalous magnetic and electric dipole moments
Tai-Fu Feng, Xue-Qian Li, Lin Lin +2
Using the effective Lagrangian method, we analyze the electroweak corrections to the anomalous dipole moments of lepton from some special two-loop topological diagrams which are co…
The Thirteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey MApping Nearby Galaxies at Apache Point Observatory
SDSS Collaboration, Franco D. Albareti, Carlos Allende Prieto +335
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in July 2014. It pursues three core programs: APOGEE-2, MaNGA, and eBOSS. In addition, eBOSS cont…
Dissipative Preparation of Many-Body Quantum States: Towards Practical Quantum Advantage
Lin Lin
While dissipation has traditionally been viewed as an obstacle to quantum coherence, it is increasingly recognized as a powerful computational resource. Dissipative protocols can p…
FAST Polarization Catalog of FRB 20240114A
Tian-Cong Wang, Jun-Shuo Zhang, Xiao-Hui Liu +60
Polarization measurements of fast radio bursts (FRBs) probe the magnetized plasma surrounding their central engines. FRB~20240114A is an exceptionally active repeating source, with…
Discontinuous Galerkin discretization for quantum simulation of chemistry
Jarrod R. McClean, Fabian M. Faulstich, Qinyi Zhu +5
Methods for electronic structure based on Gaussian and molecular orbital discretizations offer a well established, compact representation that forms much of the foundation of corre…
Solid phase epitaxial growth of the correlated-electron transparent conducting oxide SrVO3
Samuel D. Marks, Lin Lin, Peng Zuo +11
SrVO3 thin films with a high figure of merit for applications as transparent conductors were crystallized from amorphous layers using solid phase epitaxy (SPE). Epitaxial SrVO3 fil…
ELSI -- An Open Infrastructure for Electronic Structure Solvers
Victor Wen-zhe Yu, Carmen Campos, William Dawson +16
Routine applications of electronic structure theory to molecules and periodic systems need to compute the electron density from given Hamiltonian and, in case of non-orthogonal bas…
Finding the Particularity of the Active Episode of SGR J1935+2154 during Which FRB 20200428 Occurred: Implication from Statistics of Fermi/GBM X-Ray Bursts
Sheng-Lun Xie, Yun-Wei Yu, Shao-Lin Xiong +5
By using the Fermi/Gamma-ray Burst Monitor data of the X-ray bursts (XRBs) of SGR J1935+2154, we investigate the temporal clustering of the bursts and the cumulative distribution o…
Simulating Open Quantum Systems Using Hamiltonian Simulations
Zhiyan Ding, Xiantao Li, Lin Lin
We present a novel method to simulate the Lindblad equation, drawing on the relationship between Lindblad dynamics, stochastic differential equations, and Hamiltonian simulations.…
Low Rank Approximation in Approximation
Meiyue Shao, Lin Lin, Chao Yang +4
The single particle energies obtained in a Kohn--Sham density functional theory (DFT) calculation are generally known to be poor approximations to electron excitation energies that…
The Properties of Massive Star-forming galaxies with Outside-in Assembly Mode
Enci Wang, Xu Kong, Huiyuan Wang +4
Previous findings show that massive () star-forming (SF) galaxies usually have an inside-out stellar mass assembly mode. In this paper, we have for the first tim…
Tunable plasmonic devices by integrating graphene with ferroelectric nanocavity
Junxiong Guo, Shangdong Li, Jianbo Chen +6
Graphene plasmons are able to become the fundermental of novel conceptual photonic devices, resulting from their unique characteristics containing excitation at room temperature an…
Unveil A Peculiar Light Curve Pattern of Magnetar Burst with GECAM observations of SGR J1935+2154
Yue Wang, Chen-Wei Wang, Shaolin Xiong +28
Magnetar X-ray Burst (MXB) is usually composed of a single pulse or multiple pulses with rapid rise and brief duration mostly observed in hard X-ray (soft gamma-ray) band. Previous…
Towards Interrogating Discriminative Machine Learning Models
Wenbo Guo, Kaixuan Zhang, Lin Lin +2
It is oftentimes impossible to understand how machine learning models reach a decision. While recent research has proposed various technical approaches to provide some clues as to…
Coupled Lindblad pseudomode theory for simulating open quantum systems
Zhen Huang, Gunhee Park, Garnet Kin-Lic Chan +1
Coupled Lindblad pseudomode theory is a promising approach for simulating non-Markovian quantum dynamics on both classical and quantum platforms, with dynamics that can be realized…
Split representation of adaptively compressed polarizability operator
Dong An, Lin Lin, Ze Xu
The polarizability operator plays a central role in density functional perturbation theory and other perturbative treatment of first principle electronic structure theories. The co…
Mathematical and numerical analysis of quantum signal processing
Lin Lin
Quantum signal processing (QSP) provides a representation of scalar polynomials of degree as products of matrices in , parameterized by real numbers kno…
Integrating of continuous graphene with periodic ferroelectric domains for adaptive terahertz photodetector
Lin Lin, Junxiong Guo, Shangdong Li +6
Graphene plasmons hold immense potential for terahertz (THz) detector application due to their fascinating interactions between radiation and matter. However, it has remained chall…
Efficient phase-factor evaluation in quantum signal processing
Yulong Dong, Xiang Meng, K. Birgitta Whaley +1
Quantum signal processing (QSP) is a powerful quantum algorithm to exactly implement matrix polynomials on quantum computers. Asymptotic analysis of quantum algorithms based on QSP…
Projected Commutator DIIS Method for Accelerating Hybrid Functional Electronic Structure Calculations
Wei Hu, Lin Lin, Chao Yang
The commutator direct inversion of the iterative subspace (commutator DIIS or C-DIIS) method developed by Pulay is an efficient and the most widely used scheme in quantum chemistry…
Provably Efficient Long-Time Exponential Decompositions of Non-Markovian Gaussian Baths
Zhen Huang, Zhiyan Ding, Ke Wang +3
Gaussian baths are widely used to model non-Markovian environments, yet the cost of accurate simulation at long times remains poorly understood, especially when spectral densities…
Experimental observation of magnetoelectricity in spin ice DyTiO
Lin Lin, Y. L. Xie, J. -J. Wen +3
The intrinsic noncollinear spin patterns in rare-earth pyrochlore are physically interesting, hosting many emergent properties, e.g. spin ice and monopole-type excitation. Recently…
The structure of massive quiescent galaxies at z~3 in the CANDELS-COSMOS field
Lulu Fan, Guanwen Fang, Yang Chen +5
In this letter, we use a two-color (J-L) vs. (V-J) selection criteria to search massive, quiescent galaxy candidates at 2.5<z<4.0 in the CANDELS-COSMOS field. We construct a H-sele…
Large-scale ab initio simulations based on systematically improvable atomic basis
Pengfei Li, Xiaohui Liu, Mohan Chen +5
We present a first-principles computer code package (ABACUS) that is based on density functional theory and numerical atomic basis sets. Theoretical foundations and numerical techn…
Personalized Pricing with Invalid Instrumental Variables: Identification, Estimation, and Policy Learning
Rui Miao, Zhengling Qi, Cong Shi +1
Pricing based on individual customer characteristics is widely used to maximize sellers' revenues. This work studies offline personalized pricing under endogeneity using an instrum…
An Insight-HXMT view of the mHz quasi-regular modulation phenomenon in the black hole X-ray binary 4U 1630-47
Zi-Xu Yang, Liang Zhang, Yue Huang +97
Here we report the spectral-timing results of the black hole X-ray binary 4U 1630-47 during its 2021 outburst using observations from the Hard X-ray Modulation Telescope. Type-C qu…
The low level radio frequency control system for DC-SRF photo-injector at Peking University
Fang Wang, Liwen Feng, Lin Lin +4
A low level radio frequency (LLRF) control system is designed and constructed at Peking University, which is for the DC-SRF photo injector operating at 2K. Besides with continuous…
A Left-Looking Selected Inversion Algorithm and Task Parallelism on Shared Memory Systems
Mathias Jacquelin, Lin Lin, Weile Jia +2
Given a sparse matrix , the selected inversion algorithm is an efficient method for computing certain selected elements of . These selected elements correspond to all or…
Projection based embedding theory for solving Kohn-Sham density functional theory
Lin Lin, Leonardo Zepeda-Núñez
Quantum embedding theories are playing an increasingly important role in bridging different levels of approximation to the many body Schrödinger equation in physics, chemistry and…
Detection of spectral evolution in the bursts emitted during the 2008-2009 active episode of SGR J1550 - 5418
Andreas von Kienlin, David Gruber, Chryssa Kouveliotou +16
In early October 2008, the Soft Gamma Repeater SGRJ1550 - 5418 (1E 1547.0 - 5408, AXJ155052 - 5418, PSR J1550 - 5418) became active, emitting a series of bursts which triggered the…
Canonical Variates in Wasserstein Metric Space
Jia Li, Lin Lin
In this paper, we address the classification of instances represented by distributions on a vector space rather than single points. We consider classification algorithms based on p…
Robust analytic continuation of Green's functions via projection, pole estimation, and semidefinite relaxation
Zhen Huang, Emanuel Gull, Lin Lin
Green's functions of fermions are described by matrix-valued Herglotz-Nevanlinna functions. Since analytic continuation is fundamentally an ill-posed problem, the causal space desc…
Enhancing robustness and efficiency of density matrix embedding theory via semidefinite programming and local correlation potential fitting
Xiaojie Wu, Michael Lindsey, Tiangang Zhou +2
Density matrix embedding theory (DMET) is a powerful quantum embedding method for solving strongly correlated quantum systems. Theoretically, the performance of a quantum embedding…
A comprehensive search for Long and Short Periodic Features from an Extremely Active Cycle of FRB 20240114A
Dengke Zhou, Pei Wang, Jianhua Fang +56
Possible periodic features in fast radio bursts (FRBs) may provide insights into their astrophysical origins. Using extensive observations from the Five-hundred-meter Aperture Sphe…
X-ray and radio observations of the magnetar SGR J1935+2154 during its 2014, 2015, and 2016 outbursts
George Younes, Chryssa Kouveliotou, Amruta Jaodand +10
We analyzed broad-band X-ray and radio data of the magnetar SGR J1935+2154 taken in the aftermath of its 2014, 2015, and 2016 outbursts. The source soft X-ray spectrum <10 keV is w…
Predicting properties of quantum thermal states from a single trajectory
Jiaqing Jiang, Jiaqi Leng, Lin Lin
Estimating thermal expectation values of observables is a fundamental task in quantum physics, quantum chemistry, and materials science. While recent quantum algorithms have enable…
Explicit Quantum Circuits for Block Encodings of Certain Sparse Matrices
Daan Camps, Lin Lin, Roel Van Beeumen +1
Many standard linear algebra problems can be solved on a quantum computer by using recently developed quantum linear algebra algorithms that make use of block encodings and quantum…
Performance Analysis and ISI Mitigation with Imperfect Transmitter in Molecular Communication
Dongliang Jing, Lin Lin, Andrew W. Eckford
In molecular communication (MC), molecules are released from the transmitter to convey information. This paper considers a realistic molecule shift keying (MoSK) scenario with two…
Discovery of the linear energy-dependence of the spectral lag of X-ray bursts from SGR J1935+2154
Shuo Xiao, You-Li Tuo, Shuang-Nan Zhang +31
Spectral lag of the low-energy photons with respect to the high-energy ones is a common astrophysical phenomenon (such as Gamma-ray bursts and the Crab pulsar) and may serve as a k…