Gravitational self-interactions of a degenerate quantum scalar field

Chakrabarty, Sankha S.; Enomoto, Seishi; Han, Yaqi; Sikivie, Pierre; Todarello, Elisa M.

doi:10.1103/PhysRevD.97.043531

Title: Gravitational self-interactions of a degenerate quantum scalar field

Journal Article · Tue Feb 27 00:00:00 EST 2018 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.97.043531· OSTI ID:1422848

Chakrabarty, Sankha S.; Enomoto, Seishi; Han, Yaqi; Sikivie, Pierre; Todarello, Elisa M.

We develop a formalism to help calculate in quantum field theory the departures from the description of a system by classical field equations. We apply the formalism to a homogeneous condensate with attractive contact interactions and to a homogeneous self-gravitating condensate in critical expansion. In their classical descriptions, such condensates persist forever. We show that in their quantum description, parametric resonance causes quanta to jump in pairs out of the condensate into all modes with wave vector less than some critical value. We calculate, in each case, the time scale over which the homogeneous condensate is depleted and after which a classical description is invalid. We argue that the duration of classicality of inhomogeneous condensates is shorter than that of homogeneous condensates.

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Research Organization:: College of William and Mary, Williamsburg, VA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-97ER41209; FG02-02ER41209

OSTI ID:: 1422848

Alternate ID(s):: OSTI ID: 1507733

Journal Information:: Physical Review D, Journal Name: Physical Review D Vol. 97 Journal Issue: 4; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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Duration of classicality of an inhomogeneous quantum field with repulsive contact self-interactions Arza, Ariel; Chakrabarty, Sankha S.; Enomoto, Seishi Physical Review D, Vol. 100, Issue 12 https://doi.org/10.1103/physrevd.100.125010	journal	December 2019