Dutta, Biswadeb and Jayannavar, AM (1994) Symmetry-breaking transition in a two-level system coupled to an Ohmic bath: A squeezed-state approach. In: Physical Review B: Condensed Matter, 49 (5). pp. 3604-3607.
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Official URL: http://prb.aps.org/abstract/PRB/v49/i5/p3604_1
Abstract
Displaced squeezed states are proposed as variational ground states for phonons (Bose fields) coupled to two-level systems (spin systems). We have investigated the zero-temperature phase diagram for the localization-delocalization transition of a tunneling particle interacting with an Ohmic heat bath. Our results are compared with known existing approximate treatments. A modified phase diagram using the displaced squeezed state is presented.
| Item Type: | Editorials/Short Communications |
|---|---|
| Additional Information: | Copyright of this article belongs to The american physical society. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 13 Apr 2011 06:51 |
| Last Modified: | 13 Apr 2011 06:51 |
| URI: | http://eprints.iisc.ernet.in/id/eprint/36848 |
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