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Higher order contributions in finite temperature renormalization group

✍ Scribed by Koichi Funakubo; Makoto Sakamoto


Book ID
113352146
Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
300 KB
Volume
186
Category
Article
ISSN
0370-2693

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Renormalization group at finite temperat
✍ Pierre Gosselin; Benoit Grosdidier; HervΓ© Mohrbach πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 73 KB

We establish the exact renormalization group equation for the potential of a one quantum particle system at finite and zero temperature. As an example we use it to compute the ground state energy of the anharmonic oscillator. We comment on an improvement of the Feynman-Kleinert's variational method