1206.4269 (Allan Tameshtit et al.)

Positive Quantum Brownian Evolution    [PDF]

Allan Tameshtit, J. E. Sipe

Using the independent oscillator model with an arbitrary system potential, we derive a quantum Brownian equation assuming a correlated total initial state. Although not of Lindblad form, the equation preserves positivity of the density operator on a restricted set of initial states.

View original: http://arxiv.org/abs/1206.4269