56 citations · 213 across the 15 of their papers we have counts for
15 papers
Massive cold hybrid stars in a modified Polyakov-Nambu-Jona-Lasinio model
Sk Md Adil Imam, Pedro Costa, Mariana Dutra +3
We propose a modified Polyakov-loop Nambu--Jona-Lasinio (mPNJL) model in which the Polyakov potential is given by an explicit dependence on the quark chemical potential, allowing i…
A new approach to the 3-momentum regularization of the in-medium one and two fermion line integrals with applications to cross sections in the Nambu--Jona-Lasinio model
Renan Câmara Pereira, João Moreira, Pedro Costa +1
We propose the 3-momentum sphere intersection regularization applied to the one and two fermion line integrals at finite temperature and chemical potential. The quark-antiquark pol…
Building models of quarks and gluons with an arbitrary number of colors using Cartan-Polyakov loops
Renan Câmara Pereira, Pedro Costa
In this work we introduce the concept of Cartan-Polyakov loops, a special subset of Polyakov loops in the fundamental representation of the group, with charges $…
Hybrid stars with large strange quark cores
Márcio Ferreira, Renan Câmara Pereira, Constança Providência
The possible existence of hybrid stars is studied using several multi-quark interaction channels. The hadronic phase consists of an equation of state (EoS) with presently accepted…
Hybrid stars from a constrained equation of state
Márcio Ferreira, Renan Câmara Pereira, Constança Providência
We determine, within a meta-model, the properties of the nuclear matter equation of state (EoS) that allow for a phase transition to deconfinement matter. It is shown that the prop…
Hybrid stars with large strange quark cores constrained by GW170817
Márcio Ferreira, Renan Câmara Pereira, Constança Providência
We analyze the impact of several multi-quark interaction channels on the properties of hybrid stars. Four and eight vector interactions were included in the NJL model to de…
Role of the conserved charges in the chiral symmetry restoration phase transition
Pedro Costa, Renan Câmara Pereira, Constança Providência
The effect of conserved baryon, isospin and strangeness charges on the behavior of phase transitions in dense matter is studied. Baryonic matter is described within the three-flavo…
Quark matter in light neutron stars
Márcio Ferreira, Renan Câmara Pereira, Constança Providência
Higher-order repulsive interactions are included in the three-flavor NJL model in order to describe the quark phase of an hybrid star. The effect of 4-quark and 8-quark vector-isos…
The strange critical endpoint and isentropic trajectories in an Extended PNJL Model with Eight Quark Interactions
Renan Câmara Pereira, João Moreira, Pedro Costa
In this work, we explore the possible existence of several critical endpoints in the phase diagram of strongly interacting matter using an extended PNJL model with 't Hooft determi…
Neutron stars with large quark cores
Márcio Ferreira, Renan Câmara Pereira, Constança Providência
We describe charge-neutral neutron star matter in equilibrium using hybrid equations of state, where a first-order phase transition from hadronic to quark matter is realized. T…
One-meson-loop NJL model: Effect of collective and noncollective excitations on the quark condensate at finite temperature
Renan Câmara Pereira, Pedro Costa
We explore the effect of including quantum fluctuations in the two flavor NambuJona-Lasinio model at finite temperature. This is accomplished, in a symmetry preserving way, by i…
Functional renormalization group study of the critical region of the quark-meson model with vector interactions
Renan Câmara Pereira, Rainer Stiele, Pedro Costa
The critical region of the two flavour quark-meson model with vector interactions is explored using the Functional Renormalization Group technique, a non-perturbative method that t…
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…
Phase Diagram, Scalar-Pseudoscalar Meson Behavior and Restoration of Symmetries in (2+1) Polyakov-Nambu-Jona-Lasinio Model
Pedro Costa, Renan Câmara Pereira
We explore the phase diagram and the modification of mesonic observables in a hot and dense medium using the (2+1) Polyakov-Nambu-Jona-Lasinio model. We present the phase diagram i…
Two-solar-mass hybrid stars: a two model description with the Nambu-Jona-Lasinio quark model
Renan Câmara Pereira, Pedro Costa, Constança Providência
Hybrid stars with a quark phase described by the NambuJona-Lasinio model are studied. The hadron-quark model used to determine the stellar matter equation of state favors the ap…