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
25 papers · 1 filter
Hard-core Radius of Nucleons within the Induced Surface Tension Approach
K. A. Bugaev, A. I. Ivanytskyi, V. V. Sagun +9
In this work we discuss a novel approach to model the hadronic and nuclear matter equations of state using the induced surface tension concept. Since the obtained equations of stat…
Hyperonic stars and the symmetry energy
Constança Providência, Morgan Fortin, Helena Pais +1
In the present study we analyse the effect of the density dependence of the symmetry energy on the hyperonic content of neutron stars within a relativistic mean field description o…
Can dark matter drive electroweak symmetry breaking?
Catarina Cosme, João G. Rosa, Orfeu Bertolami
We consider the possibility of an oscillating scalar field accounting for dark matter and dynamically controlling the spontaneous breaking of the electroweak symmetry through a Hig…
Gauge covariant approach to the electroweak interactions of mesons in the Nambu-Jona-Lasinio model with spin-1 states
A. A. Osipov, B. Hiller, P. M. Zhang
An extended Nambu-Jona-Lasinio (NJL) model with chiral group and spin-0 and spin-1 four quark interactions is used to develop the gauge covariant approach to the…
Remarks on the Mean-Field Theory Based on the SO(2N+1) Lie Algebra of the Fermion Operators
Seiya Nishiyama, Joao Da Providencia
Toward a unified algebraic theory for mean-field Hamiltonian (MFH) describing paired- and unpaired-mode effects, in this paper, we propose a generalized HB (GHB) MFH in terms of th…
Hadronic electroweak current and mixing
A. A. Osipov, B. Hiller, P. M. Zhang
It is found that in presence of electroweak interactions the gauge covariant diagonalization of the axial-vector -- pseudoscalar mixing in the effective meson Lagrangian leads to a…
What do we learn about vector interactions from GW170817?
Veronica Dexheimer, Rosana de Oliveira Gomes, Stefan Schramm +1
We analyze the role played by vector-isovector meson interaction in dense matter present in the interior of neutron stars in the light of new measurements made during the double ne…
Heavy quarkonia: the beauty and the beasts
George Rupp, Eef van Beveren
New enhancements in the charmonium and bottomonium spectra observed since 2003 are very briefly reviewed. Special attention is paid to (formerly ) owing to…
Faddeev-Popov Matrix in Linear Covariant Gauge: First Results
Attilio Cucchieri, David Dudal, Tereza Mendes +3
We discuss a possible definition of the Faddeev-Popov matrix for the minimal linear covariant gauge on the lattice and present first results for the ghost propagator. We consider Y…
Quark propagator with two flavors of O(a)-improved Wilson fermions
Orlando Oliveira, Paulo J. Silva, Jon-Ivar Skullerud +1
We compute the Landau gauge quark propagator from lattice QCD with two flavors of dynamical O(a)-improved Wilson fermions. The calculation is carried out with lattice spacings rang…
Mean-field theory based on the \mathfrak{Jacobi~hsp} := semi-direct sum \mathfrak{h}_N \rtimes \mathfrak{sp}(2N,\mathbb{R})_\mathbb{C} algebra of boson operators
Seiya Nishiyama, Joao Da Providencia
In this paper, we give an expression for canonical transformation group with Grassmann variables, basing on the \mathfrak{Jacobi~hsp} \!:= semi-direct sum \mathfrak{h}_{N} \rtimes…
Stability of the neutron-proton-electron matter under strong magnetic fields: the covariant Vlasov approach
Sidney Avancini, B. P. Bertolino, Aziz Rabhi +3
The neutron-proton-electron(npe) matter under a strong magnetic field is studied in the context of the covariant Vlasov approach. We use a Walecka-type hadronic model and the dispe…
Non self-adjoint operators with real spectra and extensions of quantum mechanics
N. Bebiano, J. da Providência
In this article, we review the general quantum mechanical setting associated to a non self-adjoint Hamiltonian with real spectrum. Spectral properties of the Hamiltonian of a simpl…
Exploring the Quark-Gluon Vertex with Slavnov-Taylor Identities and Lattice Simulations
Orlando Oliveira, T. Frederico, W. de Paula +1
The soft gluon limit of the longitudinal part of the quark-gluon vertex is studied by resorting to non-perturbative approaches to Quantum Chromodynamics (QCD). Based on a Slavnov-T…
The Quark-Gluon Vertex and the QCD Infrared Dynamics
O. Oliveira, W. de Paula, T. Frederico +1
The Dyson-Schwinger quark equation is solved for the quark-gluon vertex using the most recent lattice data available in the Landau gauge for the quark, gluon and ghost propagators,…
Angiogenic Factors produced by Hypoxic Cells are a leading driver of Anastomoses in Sprouting Angiogenesis---a computational study
Maurício Moreira-Soares, Rita Coimbra, Luís Rebelo +2
Angiogenesis - the growth of new blood vessels from a pre-existing vasculature - is key in both physiological processes and on several pathological scenarios such as cancer progres…
Net baryon-number fluctuations in magnetized quark matter
Márcio Ferreira, Pedro Costa, Constança Providência
The kurtosis and skewness of net baryon-number fluctuations are studied for the magnetized phase diagram of three-flavor quark matter within the Polyakov extended NambuJona-Lasi…
The presence of a critical end point in the QCD phase diagram from the net-baryon number fluctuations
Márcio Ferreira, Pedro Costa, Constança Providência
The net-baryon number fluctuations for three-flavor quark matter are computed within the Polyakov extended NambuJona-Lasinio model. Two models with vanishing and nonvanishing ve…
Thermodynamical properties of strongly interacting matter in a model with explicit chiral symmetry breaking interactions
J. Moreira, J. Morais, B. Hiller +2
We analyse the effects of the light and strange current quark masses on the phase diagram of QCD at finite temperature and vanishing baryonic chemical potential, computing the spee…
GW170817: constraining the nuclear matter equation of state from the neutron star tidal deformability
Tuhin Malik, N. Alam, M. Fortin +5
Constraints set on key parameters of the nuclear matter equation of state (EoS) by the values of the tidal deformability, inferred from GW170817, are examined by using a diverse se…
Supercurrent anomaly and gauge invariance in N=1 supersymmetric Yang-Mills theory
Y. R. Batista, Brigitte Hiller, Adriano Cherchiglia +1
We analyse Feynman diagram calculational issues related to the quantum breaking of supercurrent conservation in a supersymmetric non-abelian Yang-Mills theory. For the sake of simp…
Light clusters in warm stellar matter: explicit mass shifts and universal cluster-meson couplings
Helena Pais, Francesca Gulminelli, Constança Providência +1
In-medium modifications of light cluster properties in warm stellar matter are studied within the relativistic mean-field approximation. In-medium effects are included by introduci…
High Precision Statistical Landau Gauge Lattice Gluon Propagator Computation vs. the Gribov-Zwanziger approach
David Dudal, Orlando Oliveira, Paulo J. Silva
The compatibility of the results from the Gribov-Zwanziger tree level prediction and lattice simulations, using large statistical ensembles, for the Landau gauge gluon propagator a…
Multiple critical end points in magnetized three flavor quark matter
Márcio Ferreira, Pedro Costa, Constança Providência
The magnetized phase diagram for three-flavor quark matter is studied within the Polyakov extended Nambu--Jona-Lasinio model. The order parameters are analyzed with special emphasi…