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Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory

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arxiv 2007.00786 v1 pith:N3CCRDV6 submitted 2020-07-01 hep-th gr-qc

Suddhasattwa Brahma , Keshav Dasgupta , Radu Tatar This is my paper · ORCID
classification hep-thgr-qc
keywords statesitterspacecoherentfour-dimensionalglauber-sudarshanrealizedstring
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We show that four-dimensional de Sitter space is a Glauber-Sudarshan state, i.e. a coherent state, over a supersymmetric solitonic background in full string theory. We argue that such a state is only realized in the presence of temporally varying degrees of freedom and including quantum corrections, with supersymmetry being broken spontaneously. On the other hand, fluctuations over the resulting de Sitter space is governed by the Agarwal-Tara state, which is a graviton (and flux)-added coherent state. Once de Sitter space is realized as a coherent state, and not as a vacuum, its ability to remain out of the swampland as well as issues regarding its (meta)stability, vacuum energy, and finite entropy appear to have clear resolutions.

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Cited by 3 Pith papers

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

  1. Coherent states versus Glauber-Sudarshan States: Bootstrapping, Schwinger-Keldysh Contours and Lefschetz Thimbles

    hep-th 2026-07 conditional novelty 5.0 of 10

    Quasi-de Sitter spacetimes can be realized as Glauber-Sudarshan excited states built over supersymmetric Minkowski vacua, held consistent by a bootstrap self-consistency equation rather than by a potential minimum.

  2. de Sitter Vacua in the String Landscape

    hep-th 2019-08 conditional novelty 5.0 of 10

    A time-dependent type IIB construction, analyzed via M-theory uplift, is claimed to allow 4D de Sitter vacua with a time-independent Newton constant, provided certain quantum corrections obey specific inequalities.

  3. Wheeler-De Witt equation and the Canonical Construction of the Glauber-Sudarshan States in Quantum Gravity

    hep-th 2024-11 reject novelty 4.0 of 10

    Backreaction of Glauber-Sudarshan states is claimed to convert a supersymmetric Minkowski vacuum into a transient de Sitter phase, with a positive cosmological constant emerging from Borel resummation.

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