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Breaking BEC

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arxiv 2003.10283 v1 pith:ZIIAHJOD submitted 2020-03-23 hep-th

A. Kovtun , M. Zantedeschi This is my paper · ORCID
classification hep-th
keywords classicalquantumactionapproachedapproachesbreak-timebreakingcondensate
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In this work quantum corrections to the classical evolution of a relativistic scalar condensate are studied. The problem is approached by means of two different perturbative approaches: the 2-particle-irreducible (2PI) effective action and the expansion in the self-coupling. In the weak coupling regime, the decoherence of the classical state is observed. The corresponding timescale is identified with the quantum break-time.

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  1. Coherence and Quantum Stability of Relativistic Superfluid States

    hep-th 2025-09 conditional novelty 7.0 of 10

    A charged scalar condensate is quantum-stable to all perturbative orders when it is described by the interacting vacuum of fluctuations, a non-Gaussian dressed coherent state that is an eigenstate of H minus mu Q.

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