18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of LisbonPT1.3k papers
- Universidade Técnica de LisboaPT388 papers
- Centre National de la Recherche ScientifiqueFR326 papers
- Instituto de Plasmas e Fusão NuclearPT209 papers
- European Organization for Nuclear ResearchCH202 papers
- Centro de Física Teórica de Partículas201 papers
- Instituto Politécnico de LisboaPT190 papers
- Instituto de TelecomunicaçõesPT175 papers
- Universitat de ValènciaES175 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR143 papers
- Centro de Astrofísica e GravitaçãoPT133 papers
- LIP - Laboratory of Instrumentation and Experimental Particle PhysicsPT133 papers
182 papers · 1 filter
Charge instabilities and topological phases in the extended Hubbard model on the honeycomb lattice with enlarged unit cell
Adolfo G. Grushin, Eduardo V. Castro, Alberto Cortijo +3
We study spontaneous symmetry breaking in a system of spinless fermions in the Honeycomb lattice paying special emphasis to the role of an enlarged unit cell on time reversal symme…
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…
Holomorphic bundles on the blown-up plane and the bar construction
João Santos
We study the moduli space of rank holomorphic bundles with trivial determinant and second Chern class , over the blowup $\ti…
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…
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…
A new method for large time behavior of degenerate viscous Hamilton--Jacobi equations with convex Hamiltonians
Filippo Cagnetti, Diogo Gomes, Hiroyoshi Mitake +1
We introduce a new machinery to study the large time behavior for general classes of Hamilton--Jacobi type equations, which include degenerate parabolic equations and weakly couple…
Emergent Nesting of the Fermi Surface from Local-Moment Description of Iron-Pnictide High-Tc Superconductors
J. P. Rodriguez, M. A. N. Araujo, P. D. Sacramento
We uncover the low-energy spectrum of a t-J model for electrons on a square lattice of spin-1 iron atoms with 3dxz and 3dyz orbital character by applying Schwinger-boson-slave-ferm…
On the sigma-model of deformed special geometry
Gabriel Lopes Cardoso, Alvaro Veliz-Osorio
We discuss the deformed sigma-model that arises when considering four-dimensional N=2 abelian vector multiplets in the presence of an arbitrary chiral background field. In addition…
Vortices as degenerate metrics
J. M. Baptista
We note that the Bogomolny equation for abelian vortices is precisely the condition for invariance of the Hermitian-Einstein equation under a degenerate conformal transformation. T…
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…
First asteroseismic limits on the nature of dark matter
Jordi Casanellas, Ilídio Lopes
We report the first constraints on the properties of weakly interacting low-mass dark matter (DM) particles using asteroseismology. The additional energy transport mechanism due to…
Normal modes and time evolution of a holographic superconductor after a quantum quench
Xin Gao, Antonio M. García-García, Hua Bi Zeng +1
We employ holographic techniques to investigate the dynamics of the order parameter of a strongly coupled superconductor after a perturbation that drives the system out of equilibr…
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…
Superradiant instabilities in astrophysical systems
Helvi Witek, Vitor Cardoso, Akihiro Ishibashi +1
Light bosonic degrees of freedom have become a serious candidate for dark matter. The evolution of these fields around curved spacetimes is poorly understood but is expected to dis…
Numerical instability due to relativistic plasma drift in EM-PIC simulations
Xinlu Xu, Peicheng Yu, Samual F. Martins +6
The numerical instability observed in the Electromagnetic-Particle-in-cell (EM-PIC) simulations with a plasma drifting with relativistic velocities is studied using both theory and…
3D deflagration simulations leaving bound remnants: a model for 2002cx-like Type Ia supernovae
M. Kromer, M. Fink, V. Stanishev +10
2002cx-like supernovae are a sub-class of sub-luminous Type Ia supernovae. Their light curves and spectra are characterized by distinct features that indicate strong mixing of the…
Nonlinear anomalous Hall effect and negative magnetoresistance in a system with random Rashba field
V. K. Dugaev, M. Inglot, E. Ya. Sherman +2
We predict two spin-dependent transport phenomena in two-dimensional electron systems, which are induced by spatially fluctuating Rashba spin-orbit interaction. When the electron g…
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…
Identification of the Givental formula with the spectral curve topological recursion procedure
P. Dunin-Barkowski, N. Orantin, S. Shadrin +1
We identify the Givental formula for the ancestor formal Gromov-Witten potential with a version of the topological recursion procedure for a collection of isolated local germs of t…
Revisiting the spectrum of a scalar field in an anisotropic universe
Hyeong-Chan Kim, Masato Minamitsuji
We revisit the issue on signatures of pre-inflationary background anisotropy by considering the quantization of a massless and minimally coupled scalar field in an axially symmetri…
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…