Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Eduardo S. Fraga"'
Autor:
José C. Jiménez, Eduardo S. Fraga
Publikováno v:
Universe, Vol 8, Iss 1, p 34 (2022)
We investigated compact stars consisting of cold quark matter and fermionic dark matter treated as two admixed fluids. We computed the stellar structures and fundamental radial oscillation frequencies of different masses of the dark fermion in the ca
Externí odkaz:
https://doaj.org/article/e827c02410484700ac47d23f2ca214c6
We review the results of a phenomenological model for cold and dense nuclear matter exhibiting a chiral phase transition. The idea is to model the quark-hadron phase transition under neutron star conditions within a single model, but without adding q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1009101a57560b05848d1ecc024784d7
https://eprints.soton.ac.uk/478041/
https://eprints.soton.ac.uk/478041/
We construct a model for dense matter based on low-density nuclear matter properties that exhibits a chiral phase transition and that includes strangeness through hyperonic degrees of freedom. Empirical constraints from nuclear matter alone allow for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6923d42519c74fe0a58da2e27bdf9b4
https://eprints.soton.ac.uk/472680/
https://eprints.soton.ac.uk/472680/
Autor:
Ana Luisa Foguel, Eduardo S. Fraga
We investigate the impact of a presumed axion-like-particle (ALP) emission in a core-collapse supernova explosion on neutrino luminosities and mean energies employing a relatively simple analytic description. We compute the nuclear Bremsstrahlung and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75346ad8632d38c673e24fa6b3f4f50c
http://arxiv.org/abs/2209.14318
http://arxiv.org/abs/2209.14318
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We investigate the structure of quark stars in the framework of $f(R)= R+ \alpha R^2$ gravity using an equation of state for cold quark matter obtained from perturbative QCD, parametrized only by the renormalization scale. We show that a considerably
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::620c26c5574ef4bd97c168eb158bf30c
Autor:
Osvaldo Ferreira, Eduardo S. Fraga
We discuss strange stars admixed with fermionic dark matter in the presence of a strong magnetic field using the two-fluid Tolman-Oppenheimer-Volkov equations. We describe strange quark matter using the MIT bag model and consider magnetic fields in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdd31c6a5bc2c4434655470353e83152
Autor:
José C. Jiménez, Eduardo S. Fraga
Publikováno v:
Journal of Physics: Conference Series. 2340:012016
We explore the structural stability of neutron stars against radial pulsations obtained by a set of equations of state calculated from successive interpolations between perturbative QCD at high densities and chiral effective field theory at low densi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b2fdfc46ea9ab7bbe8b9d2a8efbfde7
https://doi.org/10.1088/1742-6596/2340/1/012016
https://doi.org/10.1088/1742-6596/2340/1/012016
Autor:
Jose C. Jimenez, Eduardo S. Fraga
Publikováno v:
Physical Review
We study the stability against infinitesimal radial oscillations of neutron stars generated by a set of equations of state obtained from first-principle calculations in cold and dense QCD and constrained by observational data. We consider mild and la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9123d4d9329876fcb96d43c176cd2f81
https://doi.org/10.1103/physrevd.104.014002
https://doi.org/10.1103/physrevd.104.014002
In this work we investigate the minimal physical requirements needed for generating a speed of sound that surpasses its asymptotic conformal limit. It is shown that a peak in the speed of sound of homogeneous matter naturally emerges in the transitio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fc731b3417d27c89bfdfec93ba49f84
http://arxiv.org/abs/2105.04535
http://arxiv.org/abs/2105.04535
Autor:
Volodymyr Vovchenko, C. Hartnack, R. Holzmann, Aleksas Mazeliauskas, Thomas Schäfer, Johanna Stachel, Volker Koch, Stefan Floerchinger, Bedangadas Mohanty, Masakiyo Kitazawa, Mesut Arslandok, Christopher Plumberg, Stefan Leupold, Nathan Touroux, Jan M. Pawlowski, Dmytro Oliinychenko, Marcus Bluhm, Derek Teaney, Nicolas Wink, Gregory W. Ridgway, Marlene Nahrgang, P. Braun-Munzinger, Alexander Philipp Kalweit, Ilya Selyuzhenkov, Alice Elisabeth Ohlson, Iurii Karpenko, Mikhail A. Stephanov, Christoph Herold, Eduardo S. Fraga, Marek Gazdzicki
Publikováno v:
Nuclear physics / A 1003, 122016 (2020). doi:10.1016/j.nuclphysa.2020.122016
Nucl.Phys.A
Nucl.Phys.A, 2020, 1003, pp.122016. ⟨10.1016/j.nuclphysa.2020.122016⟩
Nucl.Phys.A
Nucl.Phys.A, 2020, 1003, pp.122016. ⟨10.1016/j.nuclphysa.2020.122016⟩
This report summarizes the presentations and discussions during the Rapid Reaction Task Force "Dynamics of critical fluctuations: Theory -- phenomenology -- heavy-ion collisions", which was organized by the ExtreMe Matter Institute EMMI and held at G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c25e3f0cc49b560b573c854dd34ae946
https://repository.gsi.de/record/233626
https://repository.gsi.de/record/233626