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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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|
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