Decoherence, discord, and the quantum master equation for cosmological perturbations
Decoherence, discord, and the quantum master equation for cosmological perturbations
We examine environmental decoherence of cosmological perturbations in order to study the quantum-to-classical transition and the impact of noise on entanglement during inflation. Given an explicit interaction between the system and environment, we derive a quantum master equation for the reduced density matrix of perturbations, drawing parallels with quantum Brownian …