130 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal de Minas GeraisBR58 papers
- Universidade Federal de Santa CatarinaBR17 papers
- Universidade Federal do Rio de JaneiroBR15 papers
- Laboratório Nacional de AstrofísicaBR13 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR10 papers
- Universidade Federal dos Vales do Jequitinhonha e MucuriBR10 papers
- Universidade Federal de LavrasBR9 papers
- University of La SerenaCL8 papers
- Argentine National ObservatoryAR7 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Universidade de São PauloBR7 papers
- Universidade Federal da ParaíbaBR7 papers
16 papers · 1 filter
Baryon and Pseudoscalar Meson Octets within a Unified broken SU(6) symmetry
Luiz L. Lopes
In this work, I discuss neutron stars with hyperons and anti-kaon condensate. To fix their coupling constants with the vector mesons of the Quantum Hadrodynamics, I use a unified s…
Oscillatory properties of strange quark stars described by the vector MIT bag model
Luiz L. Lopes, Jose C. Jimenez, Luis B. Castro +1
We investigated the radial and non-radial fundamental () mode oscillations of self-bound (quark) stars obtained after employing the Vector MIT (vMIT) bag model. Within this mode…
Spherically symmetric anisotropic strange stars
Luiz L. Lopes, H. C. Das
In this work, we made an extensive study about the possible presence of anisotropies in strange stars. To accomplish this task, we use three different configurations for the strang…
Correlation between the symmetry energy slope and the deconfinement phase transition
Luiz L. Lopes, Debora P. Menezes, Mateus R. Pelicer
We study how the nuclear symmetry energy slope () can affect the hadron-quark phase transition and neutron star properties. We show that the main physical quantities as the crit…
A closer look at the Yukawa's interaction from a symmetry group perspective
Luiz L. Lopes
I investigate the use of the SU(3) Clebsch-Gordan coefficients in light of the relations of completeness and closure. I show that in the case of 1, there is an…
Imprints of the nuclear symmetry energy slope in gravitational wave signals emanating from neutron stars
Luiz L. Lopes, Victor B. T. Alves, César O. V. Flores +1
We investigate possible traces of the nuclear symmetry energy slope () in the gravitational wave emission of neutron stars. For fixed stellar mass values, we examine how the slo…
QCD Phase Diagrams via QHD and MIT-Based Models
Carline Biesdorf, Debora P. Menezes, Luiz L. Lopes
In this paper the QCD phase diagram is obtained by the crossing of two effective models: the MIT bag based models are used to describe quark matter and QHD type models to describe…
Dark matter effects on hybrid star properties
César H. Lenzi, Mariana Dutra, Odilon Lourenço +2
In the present work we investigate the effects of dark matter (DM) on hybrid star properties. We assume that dark matter is mixed with both hadronic and quark matter and interact w…
The baryon coupling scheme in an unified SU(3) and SU(6) symmetry formalism
Luiz L. Lopes, Kauan D. Marquez, Débora P. Menezes
We calculate the baryon-meson coupling constants for the spin-1/2 baryonic octet and spin-3/2 decuplet in a unified approach relying on symmetry arguments such as the fact that the…
Hypermassive quark cores
Luiz L. Lopes, Carline Biesdorf, Débora P. Menezes
Using a quantum hadrodynamics (QHD) and MIT based models we construct hybrid stars within the Maxwell criteria of hadron-quark phase transition. We are able to produce a hybrid sta…
On the nature of the mass-gap object in the GW190814 event
Luiz L. Lopes, Debora P. Menezes
In this work, we make a very extensive study on the conditions that allow the mass-gap object in the GW190814 event to be faced as a degenerate star instead of a black hole. We beg…
The neutron star inner crust: an empirical essay
Luiz L. Lopes
In this work we study how the small contribution of the inner crust to the total equation of state (EoS) of a neutron star affects its mass-radius relation, focusing on the canonic…
Modified MIT Bag Models -- part II: QCD phase diagram and hot quark stars
Luiz L. Lopes, Carline Biesdorf, K. D. Marquez +1
In the present work we use the modified versions of the MIT bag model, on which both a vector field and a self-interacting term are introduced, to obtain hot quark matter and to in…
Modified MIT bag Models -- part I: Thermodynamic consistency, stability windows and symmetry group
Luiz L. Lopes, Carline Biesdorf, Débora P. Menezes
In this work we study different variations of the MIT bag model. We start with the so called non-ideal bag model and discuss it in detail. Then we implement a vector interaction in…
Higher-order one-loop contributions in Lorentz-breaking QED
A. P. Baeta Scarpelli, L. C. T. Brito, J. C. C. Felipe +2
We calculate higher-order quantum contributions in different Lorentz-violating parameters to the gauge sector of the extended QED. As a result of this one-loop calculation, some te…
Supergravity corrections to the factor by Implicit Regularization
J. E. Ottoni, A. P. Baeta Scarpelli, Marcos Sampaio +1
We apply Implicit regularization in the calculation of the one-loop graviton and gravitino corrections to the anomalous magnetic moment of the lepton in unbroken supergravity, whic…