Spin bath interactions effects on the geometric phase
arXiv:0811.2810 · doi:10.1016/j.physleta.2008.11.038
Abstract
We calculate the geometric phase of a spin-1/2 particle coupled to an external environment comprising N spin-1/2 particle in the framework of open quantum systems. We analyze the decoherence factor and the deviation of the geometric phase under a nonunitary evolution from the one gained under an unitary one. We show the dependence upon the system's and bath's parameter and analyze the range of validity of the perturbative approximation. Finally, we discuss the implications of our results.
8 pages, 5 figures. Version to appear in Phys. Lett. A
References in corpus (7)
- Geometric nature of the environment-induced Berry phase and geometric dephasing
- Geometric phases in open systems: an exact model to study how they are corrected by decoherence
- Geometric phase distributions for open quantum systems
- Geometric Phase of a qubit interacting with a squeezed-thermal bath
- Geometric phases induced in auxiliary qubits by many-body systems near its critical points
- Visibility Fringe Reduction Due to Noise-Induced Effects: Microscopic Approach to Interference Experiments
- Decoherence in a Two Slit Diffraction Experiment with Massive Particles