de Sitter space as a Glauber-Sudarshan state

Brahma, Suddhasattwa, Dasgupta, Keshav and Tatar, Radu
(2021) de Sitter space as a Glauber-Sudarshan state. JOURNAL OF HIGH ENERGY PHYSICS, 2021 (2). 104-.

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<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>Glauber-Sudarshan states, sometimes simply referred to as Glauber states, or alternatively as coherent and squeezed-coherent states, are interesting states in the configuration spaces of any quantum field theories, that closely resemble classical trajectories in space-time. In this paper, we identify four-dimensional de Sitter space as a coherent state over a supersymmetric Minkowski vacuum. Although such an identification is not new, what is new however is the claim that this is realizable in full string theory, but only in conjunction with temporally varying degrees of freedom and quantum corrections resulting from them. Furthermore, fluctuations over the de Sitter space is governed by a generalized graviton (and flux)-added coherent state, also known as the Agarwal-Tara state. The realization of de Sitter space as a state, and <jats:italic>not</jats:italic> as a vacuum, resolves many issues associated with its entropy, zero-point energy and trans-Planckian censorship, amongst other things.</jats:p>

Item Type: Article
Uncontrolled Keywords: Flux compactifications, M-Theory, Superstring Vacua
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 09 Dec 2021 17:53
Last Modified: 17 Mar 2024 11:23
DOI: 10.1007/JHEP02(2021)104
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