Coupled cluster expansions for the lattice O(3) sigma model

Fang, Xi-Yan; Guo, Shuo-Hong; Liu, Jin-Ming; Chen, Qi-Zhou

doi:10.1103/PhysRevD.54.6521

Coupled cluster expansions for the lattice O(3) sigma model

Xi-Yan Fang
(
- CCAST World Lab, Beijing and
- Zhongshan U.
)
,
Shuo-Hong Guo
(
- Zhongshan U.
)
,
Jin-Ming Liu
(
- Zhongshan U.
)
,
Qi-Zhou Chen
(
- CCAST World Lab, Beijing and
- Zhongshan U.
)

1996

6 pages

Published in:

Phys.Rev.D 54 (1996) 6521-6526

DOI:

10.1103/PhysRevD.54.6521

View in:

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Abstract: (APS)

The coupled-cluster method with the eigenvalue equations truncated according to the continuum limit is applied to the Hamiltonian lattice O(3) σ model. The long wavelength approximation of the vacuum wave function and mass gaps are calculated up to order 8. The results show general scaling behavior according to the full β function.

sigma model: O(3)
lattice field theory
expansion: cluster
Hamiltonian formalism
scaling
mass: gap
gap: mass
wave function
numerical calculations

References(23)

Figures(0)

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