Squeezed quantum states of relic gravitons and primordial density fluctuations

L. P. Grishchuk and Y. V. Sidorov
Phys. Rev. D 42, 3413 – Published 15 November 1990
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Abstract

The close relationship between the theory of particle creation in external fields and the theory of quantum-mechanical squeezed states is clarified. It is shown that relic gravitons (and other primordial perturbations), created from zero-point quantum fluctuations in the course of cosmological evolution, should now be in strongly squeezed states. The statistical properties of the stochastic collection of relic gravitational waves are investigated. Some other examples of particle creation, and in particular Hawking's process of black-hole evaporation, are considered in the context of the theory of squeezed states.

  • Received 29 May 1990

DOI:https://doi.org/10.1103/PhysRevD.42.3413

©1990 American Physical Society

Authors & Affiliations

L. P. Grishchuk*

  • Shternberg Astronomical Institute, Moscow University, 119899 Moscow, V-234, Union of Soviet Socialist Republics
  • California Institute of Technology, Pasadena, California 91125

Y. V. Sidorov

  • Shternberg Astronomical Institute, Moscow University, 119899 Moscow, V-234, Union of Soviet Socialist Republics

  • *Address from 1 September 1990 to 1 September 1991: Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, CO 80309-0440.

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Issue

Vol. 42, Iss. 10 — 15 November 1990

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