Artículo
Hydrodynamics of phase transition fronts and the speed of sound in the plasma
Fecha de publicación:
12/2014
Editorial:
Elsevier Science
Revista:
Nuclear Physics B
ISSN:
0550-3213
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The growth of bubbles in cosmological first-order phase transitions involves nontrivial hydrodynamics. For that reason, the study of the propagation of phase transition fronts often requires several approximations. A frequently used approximation consists in describing the two phases as being composed only of radiation and vacuum energy (the so-called bag equation of state). We show that, in realistic models, the speed of sound in the low-temperature phase is generally smaller than that of radiation, and we study the hydrodynamics in such a situation. We find in particular that a new kind of hydrodynamical solution may be possible, which does not arise in the bag model. We obtain analytic results for the efficiency of the transfer of latent heat to bulk motions of the plasma, as a function of the speed of sound in each phase.
Palabras clave:
Cosmological Phase Transitions
,
Bubble Wall
,
Relativistic Hydrodynamics
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Articulos(IFIMAR)
Articulos de INST.DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Articulos de INST.DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Citación
Megevand, Ariel Hugo; Leitao, Leonardo; Hydrodynamics of phase transition fronts and the speed of sound in the plasma; Elsevier Science; Nuclear Physics B; 891; 12-2014; 159-199
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