Scalar fields and exact invariants in a Friedmann-Robertson-Walker spacetime

Details Scalar fields and exact invariants in a Friedmann-Robertson-Walker spacetime Scalar fields and exact invariants in a Friedmann-Robertson-Walker spacetime

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvd..70l3523c&link_type=abstract

Physical Review D, vol. 70, Issue 12, id. 123523

Physics

14

Particle-Theory And Field-Theory Models Of The Early Universe, Gravitational Waves: Theory, Quantum Field Theory In Curved Spacetime

Scientific paper

In this work we study scalar fields in a Friedmann-Robertson-Walker space-time. We use the invariant operator formulation of Lewis and Riesenfeld in order to study the behavior of scalar fields placed in the Friedmann-Robertson-Walker space-time. In addition, we construct the coherent states in this background and establish the existence of squeezed states.

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