Topological invariance and global Berry phase in non-Hermitian systems
โ Scribed by Liang, Shi-Dong; Huang, Guang-Yao
- Book ID
- 118270350
- Publisher
- The American Physical Society
- Year
- 2013
- Tongue
- English
- Weight
- 616 KB
- Volume
- 87
- Category
- Article
- ISSN
- 1050-2947
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
A series of solvable time-dependent models about high-dimensional and many-body systems are given, which include the Calogero model trapped in a time-dependent harmonic well. If these models evolve periodically with time, a non-adiabatic Berry's phase in these models can be obtained.
An invariant Hermitian operator is constructed for the Heisenberg spin system in a time-dependent magnetic field. Using it we obtain the general solution of the Schrodinger equation for this system. By virtue of the general solution, the geometric phase of Pancharatnam type is worked out.