Abstract
The evolution of a two level system with a slowly varying Hamiltonian, modeled as a spin 1/2 in a slowly varying magnetic field, and interacting with a quantum environment, modeled as a bath of harmonic oscillators is analyzed using a quantum Langevin approach. This allows to easily obtain the dissipation time and the correction to the Berry phase in the case of an adiabatic cyclic evolution.
| Original language | English |
|---|---|
| Pages (from-to) | 179-183 |
| Number of pages | 5 |
| Journal | European Physical Journal D |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2007 |
ASJC Scopus subject areas
- General Physics and Astronomy
- Atomic and Molecular Physics, and Optics