18–23 May 2026
Venue
Europe/Madrid timezone

Strange stars within a density-dependent quark mass framework: a Bayesian approach

20 May 2026, 16:35
2h
Venue

Venue

Residència d'Investigadors, Carrer de l'Hospital, 64, Ciutat Vella, 08001 Barcelona, Spain
Poster Posters

Speaker

Bruna Vallin Simão (Universidade Federal de Santa Catarina)

Description

The Bodmer-Witten hypothesis proposes that the presence of strange quarks decreases the binding energy of deconfined quark matter, allowing it to stabilize at high densities and favoring its appearance in the cores of compact objects. From this perspective, we investigate the conditions for stellar matter to be composed of strange quark matter. To do so, we employ the equiparticle model [1, 2], which features a cubic-root scaling law for the quark mass, and we additionally introduce, via Bayesian analysis, an alternative method for handling the free parameters associated with the confinement strength. Within this formalism, we further construct strange quark stars and detail our results concerning their masses and radii, evaluating them against astrophysical constraints.

[1] G. X. Peng, H. C. Chiang, J. J. Yang, L. Li, and B. Liu, Phys. Rev. C 61, 015201 (2000).
[2] C. J. Xia, G. X. Peng, S. W. Chen, Z. Y. Lu, and J. F. Xu, Phys. Rev. D 89, 105027 (2014).

Primary authors

Bruna Vallin Simão (Universidade Federal de Santa Catarina) Franciele Manoel da Silva (Universidade Federal de Santa Catarina) Tiago Nunes da Silva (Universidade Federal de Santa Catarina)

Presentation materials

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