Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Farias, R. L. S."'
Publikováno v:
Phys. Lett. A 517 (2024), 129656
Strongly correlated electrons systems may exhibit a variety of interesting phenomena, for instance, superconductivity and pseudogap, as is the case of cuprates and pnictides. In strongly correlated electron systems, it is considered essential to unde
Externí odkaz:
http://arxiv.org/abs/2406.13076
Publikováno v:
Phys. Rev. D 104, 096011 (2021)
A model of two coupled complex scalar fields is studied at finite temperature and under an external magnetic field. The results are obtained in the context of the nonperturbative method of the optimized perturbation theory and contrasted with those o
Externí odkaz:
http://arxiv.org/abs/2109.03671
Publikováno v:
Phys. Rev. D 102, 076016 (2020)
We investigate the phase transition from hadron to quark matter in the general case without the assumption of chemical equilibrium. The effects of net strangeness on charge and isospin fractions, chemical potentials, and temperature are studied in th
Externí odkaz:
http://arxiv.org/abs/2004.03039
In this work, we expand on a previously reported realistic calculation of the magnetic field profile for the equation of state inside strongly magnetized neutron stars. In addition to showing that magnetic fields increase quadratically with increasin
Externí odkaz:
http://arxiv.org/abs/1709.01914
Publikováno v:
Phys. Rev. D 96, 056009 (2017)
The Nambu--Jona-Lasinio model with two flavors, three colors and diquark interactions is analyzed in the context of optimized perturbation theory (OPT). Corrections to the thermodynamical potential that go beyond the large-$N_c$ (LN) approximation ar
Externí odkaz:
http://arxiv.org/abs/1705.10920
In this Letter, we report a realistic calculation of the magnetic field profile for the equation of state inside strongly magnetized neutron stars. Unlike previous estimates, which are widely used in the literature, we find that magnetic fields incre
Externí odkaz:
http://arxiv.org/abs/1612.05795
Publikováno v:
Phys. Rev. D 94, 074011 (2016)
We show how a scheme of rewriting a divergent momentum integral can conciliate results obtained with the Nambu--Jona-Lasinio model and recent lattice results for the chiral transition in the presence of a chiral imbalance in quark matter. Purely vacu
Externí odkaz:
http://arxiv.org/abs/1604.04518
Publikováno v:
Physica A 464 (2016) 11
We address the reliability of the Optimized Perturbation Theory (OPT) in the context of the 0-dimensional $O(N)$ scalar field model. The effective potential, the self-energy and the 1PI four-point Green's function for the model are computed using dif
Externí odkaz:
http://arxiv.org/abs/1604.00537
The phenomenon of inverse magnetic catalysis of chiral symmetry in QCD predicted by lattice simulations can be reproduced within the Nambu--Jona-Lasinio model if the coupling~$G$ of the model decreases with the strength $B$ of the magnetic field and
Externí odkaz:
http://arxiv.org/abs/1603.03847
Publikováno v:
Phys. Rev. A 88, 023615 (2013)
We study the effects of induced interactions on the pairing gap, transition temperature and chemical potential of a quasi-two dimensional Fermi gas of atoms with spin-orbit coupling. We find that these mean-field parameters are significantly modified
Externí odkaz:
http://arxiv.org/abs/1512.03964