Numerical and Analytical Approach to the Quantum Dynamics of Two Coupled Spins in Bosonic Baths

Details Numerical and Analytical Approach to the Quantum Dynamics of Two Coupled Spins in Bosonic Baths Numerical and Analytical Approach to the Quantum Dynamics of Two Coupled Spins in Bosonic Baths

2009-03-30

arxiv.org/abs/0903.5181v1

Physical Review A vol 80, 012108 (2009)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.80.012108

The quantum dynamics of a spin chain interacting with multiple bosonic baths is described in a mixed Wigner-Heisenberg representation. The formalism is illustrated by simulating the time evolution of the reduced density matrix of two coupled spins, where each spin is also coupled to its own bath of harmonic oscillators. In order to prove the validity of the approach, an analytical solution in the Born-Markov approximation is found. The agreement between the two methods is shown.

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