Summary
Through the Schrödinger picture on lattice, we analyse theφ 4 theory. Our results confirm the validity of the Gaussian ansatz used in the variational approximation. The vacuum structure is unambiguous in our approach.
This is a preview of subscription content, log in via an institution to check access.
References
K. C. Wilson:Phys. Rev. D,6, 419 (1972);C. Aragao de Carvollio, C. S. Carracciolo andJ. Frohlich:Nucl. Phys. B,215, 209 (FS57) (1983).
P. M. Stevenson:Z. Phys. C,35, 467 (1987);P. M. Stevenson:Phys. Rev. D,32, 1389 (1985);P. M. Stevenson andR. Tarrach:Phys. Lett. B,176, 436 (1986);W. A. Bardeen andM. Moshe:Phys. Rev. D,28, 1372 (1983);M. Consoli andA. Ciancitto:Nucl. Phys. B,254, 653 (1985).
I. Yotsuyanagi:Z. Phys. C,35, 453 (1987).
J. J. Huang andM. J. Wang:Nuovo Cimento A,100, 723 (1988);J. J. Huang andM. J. Wang:Excited states of scalar field in de Sitter space: Lattice formalism—II, submitted for publication.
M. J. Wang:The Schrödinger picture on lattice, preprint MWP201-90;M. J. Wang:Spontaneous symmetry breaking in de Sitter space, preprint MWP205-90, submitted for publication.
M. J. Wang:Spontaneous symmetry breaking in the O(2) σ model, preprint MWP203-90, submitted for publication.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wang, MJ. The Gaussian ansatz and beyond. Nuov Cim A 104, 449–452 (1991). https://doi.org/10.1007/BF02799149
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02799149