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Time Evolution of Entanglement Entropy in Holographic FLRW Cosmologies

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arxiv 2004.08020 v1 pith:RXJURYDQ submitted 2020-04-17 hep-th

classification hep-th
keywords braneworldcosmologiesentanglemententropyuniversescloudexpandinggeometry
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To understand the time-dependent quantum correlation in expanding universes, we study the time-dependent entanglement entropy in the braneworld model. If we take into account a generalized string cloud geometry caused by uniformly distributed open strings, cosmologies on the braneworld result in the standard Friedmann-Lema\^{i}tre-Robertson-Walker cosmologies with various matter contents. On the dual field theory side, open strings are reinterpreted as a fundamental matter, while the black hole mass corresponds to the excitation energy of massless gauge bosons. In this work, we show how the string cloud geometry is matched to various braneworld cosmologie,s for example, eternal inflation, radiation-, and matter-dominated universes. Then, we investigate how the entanglement entropy evolves in those expanding universes.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. One-point holographic correlator in the expanding universe

    hep-th 2026-07 conditional novelty 5.0 of 10

    In the RS-II braneworld with p-brane gas, the holographic thermal one-point function of heavy operators inherits its time dependence from the brane motion: late-time power-law decays τ^{-Δ/2}, τ^{-2Δ/3}, τ^{-Δ} for ra...

  2. Entanglement Entropy and Complexity of Multicomponent Universe from Holography

    hep-th 2026-01 conditional novelty 4.0 of 10

    For two-component FLRW universes built from an AdS black brane plus p-brane gas, holographic entanglement entropy scales as tau early and as tau^{4/3} (dark matter) or tau^2 (exotic matter) late, while volume complexi...

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