In this paper, the master equation for the coupled lossy waveguides is solved using the thermofield dynamics(TFD) formalism. This formalism allows the use of the underlying symmetry algebras SU(2) and SU(1,1), associated with the Hamiltonian of the c
oupled lossy waveguides,to compute entanglement and decoherence as a function of time for various input states such as NOON states and thermal states.
Quantum fluctuations in the post inflationary Affleck-Dine baryogenesis model are studied. The squeezed states formalism is used to give evolution equations for the particle and anti-particle modes in the early universe. The role of expansion and par
ametric amplification of the quantum fluctuations on the baryon asymmetry produced is investigated.
