Phase structure of lattice φ4 theory by variational cumulant expansion

We study the lattice φ 4 theory in the variational cumulant expansion approach. Its phase structure is given in three, four and five dimensions. The comparison with the results from the other approach is also presented.

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Bibliographic Details
Published inPhysics letters. B Vol. 216; no. 3; pp. 381 - 386
Main Authors Wu, C.M., Zhu, Z.K., Zhao, P.Y., Song, Y.S., Dong, S.J., Ying, H.P., Xue, S.S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 1989
Elsevier Science
Subjects
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Theory of quantized fields
Scalar field
Lambda phi 4 theory
Quantum field theory
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Summary:We study the lattice φ 4 theory in the variational cumulant expansion approach. Its phase structure is given in three, four and five dimensions. The comparison with the results from the other approach is also presented.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(89)91135-0