Quantum-classical transition of density fluctuation in an inflationary model is studied. As the environment, short wave length mode of the scalar field is taken. We derived the master equation for the reduced density matrix which describes quantum mechanical time evolution of long wave fluctuation of the scalar field. We show that quantum coherence is lost and classical correlation in phase space appears. Relation to the stochastic treatment of inflation is also discussed.
|Number of pages||4|
|Journal||Vistas in Astronomy|
|Publication status||Published - 1993|
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics