Dark energy as generalised superfluid excitations

Celia Escamilla-Rivera; El\'ias Castellanos

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Dark energy as generalised superfluid excitations

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arxiv 2006.06129 v2 pith:574UCCL2 submitted 2020-06-11 gr-qc cond-mat.stat-mech

Elías Castellanos , Celia Escamilla-Rivera This is my paper

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keywords equationstateenergyexcitationsgeneralisedsuperfluidsystemacceleration

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abstract

In this paper we present a generic form of the cosmological Equation of State derived from the formalism of Statistical Mechanics, assuming that a cosmic acceleration scenario can be interpreted as a system of quasi-particles. By considering a generalised superfluidity approach, in which the energy spectrum can be modulated via a parameter $s$, a negative equation of state arises as excitations associated with an \textit{exotic} superfluid system. We show that for $s\sim 0.293$, $w\simeq-1$, which can be related to the standard equation of state for the $\Lambda$CDM model.

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