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Quantum fluctuations in quantum lattice systems with continuous symmetry

✍ Scribed by Tsutomu Momoi

Publisher
Springer
Year
1996
Tongue
English
Weight
714 KB
Volume
85
Category
Article
ISSN
0022-4715

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An analytical approach, based on the unitary transformation method, has been developed to study the effect of quantum lattice fluctuations on the ground state of a model electron-phonon system. To study nonadiabatic case, the Green's function method is used to implement the perturbation treatment. T