Gravitational self-interactions of a degenerate quantum scalar field
- Univ. of Florida, Gainesville, FL (United States)
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.
- Research Organization:
- College of William and Mary, Williamsburg, VA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG02-02ER41209; FG02-97ER41209
- OSTI ID:
- 1422848
- Alternate ID(s):
- OSTI ID: 1507733
- Journal Information:
- Physical Review D, Vol. 97, Issue 4; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Duration of classicality of an inhomogeneous quantum field with repulsive contact self-interactions
|
journal | December 2019 |
Duration of classicality of an inhomogeneous quantum field with repulsive contact self-interactions
|
text | January 2019 |
Duration of Classicality of an inhomogeneous quantum field with repulsive contact self-interactions | text | January 2019 |
Similar Records
Many-body physics in the classical-field description of a degenerate Bose gas
Duration of classicality of an inhomogeneous quantum field with repulsive contact self-interactions