Sub-Ohmic spin-boson model with off-diagonal coupling: Ground state properties
نویسندگان
چکیده
منابع مشابه
Sub-Ohmic spin-boson model with off-diagonal coupling: ground state properties.
We have carried out analytical and numerical studies of the spin-boson model in the sub-ohmic regime with the influence of both the diagonal and the off-diagonal coupling accounted for, via the Davydov D1 variational ansatz. While a second-order phase transition is known to be exhibited by this model in the presence of diagonal coupling only, we demonstrate the emergence of a discontinuous firs...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2013
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.4825205