335 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of CoimbraPT197 papers
- Universidade Federal de Santa CatarinaBR23 papers
- Instituto Superior TécnicoPT20 papers
- Joint Institute for Nuclear ResearchRU17 papers
- Centre National de la Recherche ScientifiqueFR14 papers
- University of LisbonPT12 papers
- Instituto Tecnológico de AeronáuticaBR8 papers
- Universidade Federal de Minas GeraisBR8 papers
- Universidade de São PauloBR7 papers
- Universidade Federal do ABCBR7 papers
- Bogolyubov Institute for Theoretical PhysicsUA6 papers
- Ghent UniversityBE6 papers
23 papers · 1 filter
Andrade rheology in time-domain. Application to Enceladus' dissipation of energy due to forced libration
Yeva Gevorgyan, Gwenaël Boué, Clodoaldo Ragazzo +2
The main purpose of this work is to present a time-domain implementation of the Andrade rheology, instead of the traditional expansion in terms of a Fourier series of the tidal pot…
Neutron stars: new constraints on asymmetric dark matter
O. Ivanytskyi, V. Sagun, I. Lopes
We study an impact of asymmetric dark matter on properties of the neutron stars and their ability to reach the two solar masses limit, which allows us to present a new range of mas…
Unveiling the nuclear matter EoS from neutron star properties: a supervised machine learning approach
Márcio Ferreira, Constança Providência
We explore supervised machine learning methods in extracting the non-linear maps between neutron stars (NS) observables and the equation of state (EoS) of nuclear matter. Using a T…
Spin polarizations under a pseudovector interaction between quarks with the Kobayashi-Maskawa-'t Hooft term in high density quark matter
M. Morimoto, Y. Tsue, J. da Providencia +2
A possibility of a quark spin polarization originated from a pseudovector condensate is investigated in the three-flavor Nambu-Jona-Lasinio model with the Kobayashi-Maskawa-'t Hoof…
Exploration of the phase diagram and the thermodynamic properties of QCD at finite temperature and chemical potential with the PNJL effective model
M. Motta, W. M. Alberico, A. Beraudo +2
The QCD transition from a hadronic to a quark-gluon plasma phase is a cross-over at vanishing/small baryo-chemical potential, while at higher chemical potentials it is argued that…
Aspects of isentropic trajectories in chiral effective models
Rainer Stiele, Wanda Maria Alberico, Andrea Beraudo +4
The evolution of the fireball in heavy ion collisions is an isentropic process, meaning that it follows a trajectory of constant entropy per baryon in the phase diagram of the stro…
Second look to the Polyakov Loop Nambu-Jona-Lasinio model at finite baryonic density
O. Ivanytskyi, M. Ángeles Pérez-García, V. Sagun +1
We revisit the Polyakov Loop coupled Nambu-Jona-Lasinio model that maintains the Polyakov loop dynamics in the limit of zero temperature. This is of interest for astrophysical appl…
Binding of muonated hydrogen molecules on the occasionof the Born-Oppenheimer approximation 90th anniversary
António J. C. Varandas, João da Providência, João P. da Providência
The stability of four fermionic particles with unit charge, of which, two are positively, and two negatively charged, is discussed. Except for using the simplest approximation of a…
Towards non-Hermitian quantum statistical thermodynamics
Natália Bebiano, João da Providência, João P. da Providência
Non-Hermitian Hamiltonians possessing a discrete real spectrum motivated a remarkable research activity in quantum physics and new insights have emerged. In this paper we formulate…
Measuring a QED cross section via a witness particle
Jonas B. Araujo, B. Hiller, I. G. da Paz +2
We consider a QED scattering (), in which is initially entangled with a third particle () that does not participate directly in the scattering. The effect…
Nearly Polar orbit of the sub-Neptune HD3167 c: Constraints on a multi-planet system dynamical history
Shweta Dalal, Guillaume Hébrard, Alain Lecavelier des Étangs +5
We present the obliquity measurement, that is, the angle between the normal angle of the orbital plane and the stellar spin axis, of the sub-Neptune planet HD3167 c, which transits…
Towards a reliable effective field theory of inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +1
We present the first quantum field theory model of inflation that is renormalizable in the matter sector, with a super-Hubble inflaton mass and sub-Planckian field excursions, whic…
The generalised infrared structure of the gluon propagator
Shirley Weishi Li, Peter Lowdon, Orlando Oliveira +1
Gauge theory correlators are potentially more singular in the infrared than those in non-gauge theories. We determine the implications that these singularities have on the spectrum…
Fermionic model with a non-Hermitian Hamiltonian
Natália Bebiano, João da Providência, Seiya Nishiyama +1
This paper deals with the mathematical spectral analysis and physical interpretation of a fermionic system described by a non-Hermitian Hamiltonian possessing real eigenvalues. A s…
Creating Oscillons and Oscillating Kinks in Two Scalar Field Theories
R. A. C. Correa, A. de Souza Dutra, T. Frederico +3
Oscillons are time-dependent, localized in space, extremely long-lived states in nonlinear scalar-field models, while kinks are topological solitons in one spatial dimension. In th…
Top condensation model: a step towards the correct prediction of the Higgs mass
A. A. Osipov, B. Hiller, A. H. Blin +3
A realization of the composite Higgs scenario in the context of the effective model with the symmetric four-Fermi interactions proposed by Miransky, Tanabash…
On relation between bulk, surface and curvature parts of nuclear binding energy within the model of hexagonal clusters
V. V. Sagun, K. A. Bugaev, A. I. Ivanytskyi
Using the model of hexagonal clusters we express the surface, curvature and Gauss curvature coefficients of the nuclear binding energy in terms of its bulk coefficient. Using the d…
Neutron star properties: Constraining the nuclear matter EoS
Constança Providência
We examine the influence of the density dependence of the symmetry energy on several properties of neutron stars. In particular, we study the constraints set on the nuclear matter…
Quark and Polyakov-loop correlations in effective models at zero and non-vanishing density
Hubert Hansen, Rainer Stiele, Pedro Costa
The aim of this work is to shed light on some lesser known aspects of Polyakov-loop--extended chiral models (namely the Polyakov-loop extended Nambu--Jona-Lasinio and Quark-Meson m…
Finite Temperature Landau Gauge Lattice Quark Propagator
Orlando Oliveira, Paulo J. Silva
The quark propagator at finite temperature is investigated using quenched gauge configurations. The propagator form factors are investigated for temperatures above and below the gl…
Constraining dimension-six nonminimal Lorentz-violating electron-nucleon interactions with EDM physics
Jonas B. Araujo, A. H. Blin, Marcos Sampaio +1
The electric dipole moment (EDM) of an atom could arise also from -odd and -odd electron-nucleon couplings. In this work we investigate a general class of dimension- elect…
Quark mass effects in the thermodynamical properties of an extended (P)NJL model
J. Moreira, J. Morais, B. Hiller +2
We analyze the thermodynamical properties of a system of strongly interacting particles at vanishing quark chemical potential in the framework of a recently developed extension of…
Spectral representation of lattice gluon and ghost propagators at zero temperature
David Dudal, Orlando Oliveira, Martin Roelfs +1
We consider the analytic continuation of Euclidean propagator data obtained from 4D simulations to Minkowski space. In order to perform this continuation, the common approach is to…