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
19 papers · 1 filter
An unified theory of quantised electrons, phonons and photons out-of-equilibrium: a simplified {\em ab-initio} approach based on the Generalised Baym-Kadanoff ansatz
Pedro Melo, Andrea Marini
We present a full ab-inito description of the coupled out-of-equilibrium dynamics of photons, phonons, and electrons. In the present approach the quantised nature of the electromag…
Quantum Dynamics in Noisy Backgrounds: from sampling to dissipation and fluctuations
O. Oliveira, W. de Paula, T. Frederico +1
We investigate the dynamics of a quantum system coupled linearly to Gaussian white noise using functional methods. By performing the integration over the noisy field in the evoluti…
Two Dimensional Honeycomb Materials: random fields, dissipation and fluctuations
T. Frederico, O. Oliveira, W. de Paula +2
In this paper, we propose a method to describe the many-body problem of electrons in honeycomb materials via the introduction of random fields which are coupled to the electrons an…
General spin and pseudospin symmetries of the Dirac equation
P. Alberto, M. Malheiro, T. Frederico +1
In the 70's Smith and Tassie, and Bell and Ruegg independently found SU(2) symmetries of the Dirac equation with scalar and vector potentials. These symmetries, known as pseudospin…
QMC approach based on the Bogoliubov independent quark model of the nucleon
Henrik Bohr, Steven A. Moszkowski, Prafulla K. Panda +2
The quark-meson coupling model due to Guichon is formulated on the basis of the independent quark model of the nucleon proposed by Bogoliubov and is applied to the phenomenological…
Modified Non-Euclidian Transformation on the SO(2N+2)/U(N+1) Grassmannian and SO(2N+1) Random Phase Approximation for Unified Description of Bose and Fermi Type Collective Excitations
Seiya Nishiyama, Joao da Providencia
In a slight different way from the previous one, we propose a modified non-Euclidian transformation on the SO(2N+2)/U(N+1) Grassmannian which give the projected SO(2N+1) Tamm-Danco…
Quantum Field Theory Approach to the Optical Conductivity of Strained and Deformed Graphene
W. de Paula, a. Chaves, O. Oliveira +1
The computation of the optical conductivity of strained and deformed graphene is discussed within the framework of quantum field theory in curved spaces. The analytical solutions o…
Do hyperons exist in the interior of neutron stars ?
Debarati Chatterjee, Isaac Vidana
In this work we review the role of hyperons on the properties of neutron and proto-neutron stars. In particular, we revise the so-called "hyperon puzzle", go over some of the solut…
Nature of phase transitions in Axelrod-like coupled Potts models in two dimensions
Yerali Gandica, Silvia Chiacchiera
We study coupled -state Potts models in a two-dimensional square lattice. The interaction between the different layers is attractive, to favour a simultaneous alignment in a…
Hyperons in Neutron Stars
Isaac Vidana
In this work I briefly review some of the effects of hyperons on the properties of neutron and proto-neutron stars. In particular, I revise the problem of the strong softening of t…
Influence of the inverse magnetic catalysis and the vector interaction in the location of the critical end point
Pedro Costa, Márcio Ferreira, Débora P. Menezes +2
The effect of a strong magnetic field on the location of the critical end point (CEP) in the QCD phase diagram is discussed under different scenarios. In particular, we consider th…
Subtleties in the beta function calculation of N=1 supersymmetric gauge theories
A. L. Cherchiglia, Marcos Sampaio, B. Hiller +1
We investigate some peculiarities in the calculation of the two-loop beta-function of supersymmetric models which are intimately related to the so-called "Anomaly Puzzle". Th…
Spontaneous magnetization in high-density quark matter
Y. Tsue, J. da Providencia, C. Providencia +2
It is shown that the spontaneous magnetization occurs due to the anomalous magnetic moments of quarks in the high-density quark matter under the tensor-type four-point interaction.…
Analytic continuation of nucleon electromagnetic form factors in the time-like region
Pedro Alberto, Alessandro Drago, Alessio Mangoni +2
The possibility to compute nucleon electromagnetic form factors in the time-like region by analytic continuation of their space-like expressions has been explored in the framework…
Neutrino diffusion in the pasta phase matter within the Thomas-Fermi approach
U. J. Furtado, S. S. Avancini, J. R. Marinelli +2
The behavior and properties of neutrinos in non-uniform nuclear matter, surrounded by electrons and other neutrinos are studied. The nuclear matter itself is modeled by the non-lin…
Debye temperature of nanocrystalline Fe-Cr alloys obtained by mechanical alloying
S. M. Dubiel, B. F. O. Costa, J. Cieslak +1
A series on nanocrystalline Fe100-xCrx alloys prepared by mechanical alloying was investigated with X-ray diffraction (XRD), scanning electron microscopy (SEM) and Mössbauer spectr…
The lattice gluon propagator in renormalizable gauges
P. Bicudo, D. Binosi, N. Cardoso +2
We study the SU(3) gluon propagator in renormalizable gauges implemented on a symmetric lattice with a total volume of (3.25 fm) for values of the guage fixing parameter…
Erratum: Anisotropy in the EoS of Magnetized Quark Matter [Phys Rev C91, 065205 (2015)]
Débora P. Menezes, Marcus B. Pinto, Constança Providência
In this erratum we present the correct result for the magnetization of the three flavor Nambu--Jona-Lasinio model which was originally obtained by us in Phys Rev C91, 065205 (2015)…
The mixing in a generalized multi-quark interaction scheme
Alexander A. Osipov, Brigitte Hiller, Alex H. Blin
We investigate the isospin symmetry breaking effects within a recently derived Nambu-Jona-Lasinio related model by fitting the measured pseudoscalar meson masses and weak decay cou…