Dutta, Biswadeb ; Jayannavar, A. M. (1994) Symmetry-breaking transition in a two-level system coupled to an Ohmic bath: a squeezed-state approach Physical Review B, 49 (5). pp. 3604-3607. ISSN 0163-1829
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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.49.3604
Related URL: http://dx.doi.org/10.1103/PhysRevB.49.3604
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: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 14499 |
| Deposited On: | 12 Nov 2010 14:10 |
| Last Modified: | 03 Jun 2011 11:49 |
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