| DATE: |
2008-07-08 16:00 - 17:00 |
| PLACE: |
Kenkyu Honkan 3F RM 321 |
| TITLE: |
Consistent Quantum Physics using pseudo-hermitian operators |
| CONTACT: |
tsuda |
| SPEAKER: |
Dr. Pijush K. Ghosh (Visva-Bharati University) |
| LANGUAGE: |
English |
| ABSTRACT: |
An operator may have real eigenvalues with unitary time evolution even if it is not hermitian. The condition is that the operator should be pseudo-hermitian and/or PT(parity and time-reversal) symmetric. After a brief review on this topic, a large class of pseudo-hermitian models with underlying supersymmetry will be introduced. Special cases of this class of pseudo-hermitian Hamiltonian include non-hermitian versions of several Jaynes-Cummings-type models. Exact eigenspectra and the metric in the Hilbert space that enables a consistent quantum theory will be discussed in some detail for these Jaynes-Cummings-type models. |
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