An equation of state for purely kinetic k-essence inspired by cosmic topological defects

Abstract We investigate the physical properties of a purely kinetic k-essence model with an equation of state motivated in superconducting membranes. We compute the equation of state parameter w and discuss its physical evolution via a nonlinear equation of state. Using the adiabatic speed of sound...

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Bibliographic Details
Main Authors: Rubén Cordero, Eduardo L. González, Alfonso Queijeiro
Format: Article
Language:English
Published: SpringerOpen 2017-06-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-017-4913-7