| Texto completo | |
| Autor(es): |
Fraga, Eduardo S.
;
Hippert, Mauricio
;
Schmitt, Andreas
Número total de Autores: 3
|
| 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 |