2.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Instituto Superior TécnicoPT388 papers
- Centro de Física Teórica de Partículas54 papers
- University of ViennaAT37 papers
- Centre National de la Recherche ScientifiqueFR34 papers
- University of LisbonPT34 papers
- University of MississippiUS31 papers
- Universitat de ValènciaES27 papers
- California Institute of TechnologyUS25 papers
- University of CoimbraPT19 papers
- European Organization for Nuclear ResearchCH18 papers
- Instituto de TelecomunicaçõesPT18 papers
- Instituto Politécnico de LisboaPT17 papers
82 papers · 1 filter
Geometrical effects on energy transfer in disordered open quantum systems
M. Mohseni, A. Shabani, S. Lloyd +2
We explore various design principles for efficient excitation energy transport in complex quantum systems. We investigate energy transfer efficiency in randomly disordered geometri…
Probing the Pre-Reionization Epoch with Molecular Hydrogen Intensity Mapping
Yan Gong, Asantha Cooray, Mario G. Santos
Molecular hydrogen is now understood to be the main coolant of the primordial gas clouds leading to the formation of the very first stars and galaxies. The line emissions associate…
The black disk and the dip in the differential elastic cross section at asymptotic energy
I. Bautista, J. Dias de Deus
We test the validity of the black disk limit in elastic scattering by studying the evolution of the dip in the scaling variable , where is the transverse m…
Phase coherence in one-dimensional superconductivity by power-law hopping
Alejandro M. Lobos, Masaki Tezuka, Antonio M. García-García
In a one-dimensional (1D) superconductor, zero temperature quantum fluctuations destroy phase coherence. Here we put forward a mechanism which can restore phase coherence: power-la…
Linear and angular momentum spaces for Majorana spinors
L. Pedro
In a Majorana basis, the Dirac equation for a free spin one-half particle is a 4x4 real matrix differential equation. The solution can be a Majorana spinor, a 4x1 real column matri…
A novel approach in the WIMP quest: Cross-Correlation of Gamma-Ray Anisotropies and Cosmic Shear
S. Camera, M. Fornasa, N. Fornengo +1
Both cosmic shear and cosmological gamma-ray emission stem from the presence of Dark Matter (DM) in the Universe: DM structures are responsible for the bending of light in the weak…
Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
I. G. Aznauryan, A. Bashir, V. Braun +24
Studies of the structure of excited baryons are key to the N* program at Jefferson Lab. Within the first year of data taking with the Hall B CLAS12 detector following the 12 GeV up…
Flavour models for TM1 lepton mixing
Ivo de Medeiros Varzielas, Luís Lavoura
We present a framework for lepton flavour models such that the first column of the lepton mixing matrix is (2,-1,-1)/sqrt(6). We show that the flavour symmetry group adequate for t…
X(3872) is not a true molecule
Susana Coito, George Rupp, Eef van Beveren
A solvable coordinate-space model is employed to study the component of the X(3872) wave function, by coupling a confined state to the almost unbound…
A Search for Point Sources of EeV Neutrons
The Pierre Auger Collaboration
A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicat…
Eigenvalue inequalities for the p-Laplacian on a Riemannian manifold and estimates for the heat kernel
Jing Mao
In this paper, we successfully generalize the eigenvalue comparison theorem for the Dirichlet -Laplacian () obtained by Matei [A.-M. Matei, First eigenvalue for the…
Quasinormal modes of regular black holes
Antonino Flachi, José P. S. Lemos
Black hole quasinormal frequencies are complex numbers that encode information on how a black hole relaxes after it has been perturbed and depend on the features of the geometry an…
Evading death by vacuum
A. Barroso, P. M. Ferreira, I. P. Ivanov +2
In the Standard Model, the Higgs potential allows only one minimum at tree-level. But the open possibility that there might be two scalar doublets enriches the vacuum structure, al…
Universality, maximum radiation and absorption in high-energy collisions of black holes with spin
Ulrich Sperhake, Emanuele Berti, Vitor Cardoso +1
We explore the impact of black hole spins on the dynamics of high-energy black hole collisions. We report results from numerical simulations with gamma-factors up to 2.49 and dimen…
Observing Higgs boson production through its decay into gamma-rays: A messenger for Dark Matter candidates
Nicolas Bernal, Celine Boehm, Sergio Palomares-Ruiz +2
In this Letter, we study the gamma-ray signatures subsequent to the production of a Higgs boson in space by dark matter annihilations. We investigate the cases where the Higgs boso…
An analysis of the influence of background subtraction and quenching on jet observables in heavy-ion collisions
Liliana Apolinário, Néstor Armesto, Leticia Cunqueiro
Subtraction of the large background in reconstruction is a key ingredient in jet studies in high-energy heavy-ion collisions at RHIC and the LHC. Here we address the question to wh…
Extremal black brane solutions in five-dimensional gauged supergravity
Susanne Barisch-Dick, Gabriel Lopes Cardoso, Michael Haack +1
We study stationary black brane solutions in the context of N = 2, U(1) gauged supergravity in five dimensions. Using the formalism of first-order flow equations, we construct exam…
Invariants and Flavour in the General Two-Higgs Doublet Model
F. J. Botella, G. C. Branco, M. N. Rebelo
The flavour structure of the general Two Higgs Doublet Model (2HDM) is analysed and a detailed study of the parameter space is presented, showing that flavour mixing in the 2HDM ca…
Interacting Fermions, Boundaries, and Finite Size Effects
Antonino Flachi
In this work we analyze how effects of finite size may modify the thermodynamics of a system of strongly interacting fermions that we model using an effective field theory with fou…
Probing the Flyby Anomaly with the future STE-QUEST mission
Jorge Páramos, Gerald Hechenblaikner
In this study, we demonstrate that the flyby anomaly, an unexpected acceleration detected in some of the gravitational assists of the Galileo, NEAR, Cassini and Rosetta spacecraft,…
Perturbations of slowly rotating black holes: massive vector fields in the Kerr metric
Paolo Pani, Vitor Cardoso, Leonardo Gualtieri +2
We discuss a general method to study linear perturbations of slowly rotating black holes which is valid for any perturbation field, and particularly advantageous when the field equ…
Reionization and the Cosmic Dawn with the Square Kilometre Array
Garrelt Mellema, León Koopmans, Filipe Abdalla +25
The Square Kilometre Array (SKA) will have a low frequency component (SKA-low) which has as one of its main science goals the study of the redshifted 21cm line from the earliest ph…
Phenomenology of WIMPy baryogenesis models
Nicolas Bernal, Francois-Xavier Josse-Michaux, Lorenzo Ubaldi
A possible connection between the abundances of baryonic and dark matter (DM) has been explored so far mostly in the context of the so-called asymmetric DM. Recently, a very differ…
Self-Organizing Neutrino Mixing Matrix
Ernest Ma
A new and novel idea for a predictive neutrino mass matrix is presented, using the non-Abelian discrete symmetry A(4) and the seesaw mechanism with only two heavy neutral fermion s…