Phase conversion in a weakly first-order quark-hadron transition

We investigate the process of phase conversion in a thermally driven weakly first-order quark-hadron transition. This scenario is physically appealing even if the nature of this transition in equilibrium proves to be a smooth crossover for vanishing baryonic chemical potential. We construct an effec...

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Principais autores:	Moreira, André Bessa, Fraga, Eduardo Souza, Mintz, Bruno Werneck
Formato:	article
Idioma:	English
Publicado em:	American Physical Society
Assuntos:	Phase conversion Quark-hadron transition
Endereço do item:	https://repositorio.ufrn.br/jspui/handle/123456789/29793
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spelling	ri-123456789-297932020-08-16T07:12:08Z Phase conversion in a weakly first-order quark-hadron transition Moreira, André Bessa Fraga, Eduardo Souza Mintz, Bruno Werneck Phase conversion Quark-hadron transition We investigate the process of phase conversion in a thermally driven weakly first-order quark-hadron transition. This scenario is physically appealing even if the nature of this transition in equilibrium proves to be a smooth crossover for vanishing baryonic chemical potential. We construct an effective potential by combining the equation of state obtained within lattice QCD for the partonic sector with that of a gas of resonances in the hadronic phase, and present numerical results on bubble profiles, nucleation rates, and time evolution, including the effects from reheating on the dynamics for different expansion scenarios. Our findings confirm the standard picture of a cosmological first-order transition, in which the process of phase conversion is entirely dominated by nucleation, also in the case of a weakly first-order transition. On the other hand, we show that, even for expansion rates much lower than those expected in high-energy heavy-ion collisions, nucleation is very unlikely, indicating that the main mechanism of phase conversion is spinodal decomposition. Our results are compared to those obtained for a strongly first-order transition, as the one provided by the MIT bag model 2020-08-11T14:08:27Z 2020-08-11T14:08:27Z 2009-02-12 article BESSA, A.; FRAGA, E. S.; MINTZ, B. W.. Phase conversion in a weakly first-order quark-hadron transition. Physical Review D, [S.L.], v. 79, n. 3, p. 3-4, 12 fev. 2009. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.79.034012. Acesso em: 04 ago. 2020. http://dx.doi.org/10.1103/physrevd.79.034012 https://repositorio.ufrn.br/jspui/handle/123456789/29793 10.1103/PhysRevD.79.034012 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf American Physical Society
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Phase conversion Quark-hadron transition
spellingShingle	Phase conversion Quark-hadron transition Moreira, André Bessa Fraga, Eduardo Souza Mintz, Bruno Werneck Phase conversion in a weakly first-order quark-hadron transition
description	We investigate the process of phase conversion in a thermally driven weakly first-order quark-hadron transition. This scenario is physically appealing even if the nature of this transition in equilibrium proves to be a smooth crossover for vanishing baryonic chemical potential. We construct an effective potential by combining the equation of state obtained within lattice QCD for the partonic sector with that of a gas of resonances in the hadronic phase, and present numerical results on bubble profiles, nucleation rates, and time evolution, including the effects from reheating on the dynamics for different expansion scenarios. Our findings confirm the standard picture of a cosmological first-order transition, in which the process of phase conversion is entirely dominated by nucleation, also in the case of a weakly first-order transition. On the other hand, we show that, even for expansion rates much lower than those expected in high-energy heavy-ion collisions, nucleation is very unlikely, indicating that the main mechanism of phase conversion is spinodal decomposition. Our results are compared to those obtained for a strongly first-order transition, as the one provided by the MIT bag model
format	article
author	Moreira, André Bessa Fraga, Eduardo Souza Mintz, Bruno Werneck
author_facet	Moreira, André Bessa Fraga, Eduardo Souza Mintz, Bruno Werneck
author_sort	Moreira, André Bessa
title	Phase conversion in a weakly first-order quark-hadron transition
title_short	Phase conversion in a weakly first-order quark-hadron transition
title_full	Phase conversion in a weakly first-order quark-hadron transition
title_fullStr	Phase conversion in a weakly first-order quark-hadron transition
title_full_unstemmed	Phase conversion in a weakly first-order quark-hadron transition
title_sort	phase conversion in a weakly first-order quark-hadron transition
publisher	American Physical Society
publishDate	2020
url	https://repositorio.ufrn.br/jspui/handle/123456789/29793
work_keys_str_mv	AT moreiraandrebessa phaseconversioninaweaklyfirstorderquarkhadrontransition AT fragaeduardosouza phaseconversioninaweaklyfirstorderquarkhadrontransition AT mintzbrunowerneck phaseconversioninaweaklyfirstorderquarkhadrontransition
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Phase conversion in a weakly first-order quark-hadron transition

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