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Title: Coupled cluster description of field theories: Procedures and their application to the vacuum sector in (1+1)-dimensional Phi/sup 4/ field theories

Journal Article · · Phys. Rev. D; (United States)

General procedures for the application of the nonperturbative coupled cluster method (CCM) are described for one-component boson field theories. The basis set is optimized first by a Hartree-Bogolubov transformation. Then ''correlations'' are added via the CCM. This procedure is applied to two-dimensional Phi/sup 4/ field theory. The results are very stable outside the critical region.

Research Organization:
Institut fuer Theoretische Physik II, Ruhr-Universitaet Bochum, Postfach 102148, D4630 Bochum 1, Germany and Institute of Physics, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
OSTI ID:
5371491
Journal Information:
Phys. Rev. D; (United States), Vol. 32:6
Country of Publication:
United States
Language:
English

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