TY - JOUR

T1 - Quantum to classical transition of density fluctuations in the inflationary model

AU - Nambu, Yasusada

PY - 1992/2/6

Y1 - 1992/2/6

N2 - Quantum-classical transitions of density fluctuations in an inflationary model are studied. As the environment, the short wave length mode of the scalar field is taken. We derive the master equation for the reduced density matrix which describes the quantum mechanical time evolution of the long wave fluctuation of the scalar field. We show that quantum coherence is lost and a classical correlation in phase space appears. The relation to the stochastic treatment of inflation is also discussed.

AB - Quantum-classical transitions of density fluctuations in an inflationary model are studied. As the environment, the short wave length mode of the scalar field is taken. We derive the master equation for the reduced density matrix which describes the quantum mechanical time evolution of the long wave fluctuation of the scalar field. We show that quantum coherence is lost and a classical correlation in phase space appears. The relation to the stochastic treatment of inflation is also discussed.

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U2 - 10.1016/0370-2693(92)90534-B

DO - 10.1016/0370-2693(92)90534-B

M3 - Article

AN - SCOPUS:0001858423

SN - 0370-2693

VL - 276

SP - 11

EP - 17

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -