Autor(es)

Fraga, Eduardo S. ; Hippert, Mauricio ; Schmitt, Andreas

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW D; v. 99, n. 1, p. 15-pg., 2019-01-31.

Resumo

If a first-order phase transition separates nuclear and quark matter at large baryon density, an interface between these two phases has a nonzero surface tension. WC calculate this surface tension within a nucleon-meson model for domain walls and bubbles. Various methods and approximations are discussed and compared, including a numerical evaluation of the spatial profile of the interface. We also compute the surface tension at the other first-order phase transitions of the model: the nuclear liquid-gas transition and, in the parameter regime where it exists, the direct transition from the vacuum to the (approximately) chirally symmetric phase. identifying the chirally symmetric phase with quark matter-our model does not contain explicit quark degrees of freedom-we find maximal surface tensions of the vacuum-quark transition Sigma(VQ) similar to 15 MeV/fm(2), relevant for the surface of quark stars, and of the nuclear-quark transition Sigma(NQ) similar to 10 MeV/fm(2), relevant for hybrid stars and for quark matter nucleation in supernovae and neutron star mergers. (AU)

• Processo FAPESP: 18/07833-1 - Comportamento hidrodinâmico do QGP perto do ponto crítico
• Beneficiário: Maurício Hippert Teixeira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/05685-2 - Física hadrônica em colisões nucleares de altas energias
• Beneficiário: Jun Takahashi
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais