dc.creatorMegevand, Ariel Hugo
dc.date.accessioned2016-11-14T20:08:47Z
dc.date.accessioned2018-11-06T11:11:50Z
dc.date.available2016-11-14T20:08:47Z
dc.date.available2018-11-06T11:11:50Z
dc.date.created2016-11-14T20:08:47Z
dc.date.issued2013-07
dc.identifierMegevand, Ariel Hugo; Friction forces on phase transition fronts; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 2013; 7-2013; 45-77
dc.identifier1475-7516
dc.identifierhttp://hdl.handle.net/11336/8203
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1847011
dc.description.abstractIn cosmological first-order phase transitions, the microscopic interaction of the phase transition fronts with non-equilibrium plasma particles manifests itself macroscopically as friction forces. In general, it is a nontrivial problem to compute these forces, and only two limits have been studied, namely, that of very slow walls and, more recently, ultra-relativistic walls which run away. In this paper we consider ultra-relativistic velocities and show that stationary solutions still exist when the parameters allow the existence of runaway walls. Hence, we discuss the necessary and sufficient conditions for the fronts to actually run away. We also propose a phenomenological model for the friction, which interpolates between the non-relativistic and ultra-relativistic values. Thus, the friction depends on two friction coefficients which can be calculated for specific models. We then study the velocity of phase transition fronts as a function of the friction parameters, the thermodynamic parameters, and the amount of supercooling.
dc.languageeng
dc.publisherIop Publishing
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/1475-7516/2013/07/045
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2013/07/045
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1303.4233v2
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectcosmological phase transitions
dc.subjectprimordial gravitational waves
dc.subjectparticle physics - cosmology connection
dc.titleFriction forces on phase transition fronts
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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