SECOND ORDER PHASE TRANSITION IN TWO-DIMENSIONAL SINE-GORDON FIELD THEORY: LATTICE MODEL

Joseph, K.Babu; Kuriakose, V.C.

doi:10.1007/BF02846301

SECOND ORDER PHASE TRANSITION IN TWO-DIMENSIONAL SINE-GORDON FIELD THEORY: LATTICE MODEL

K.Babu Joseph
(
- Cochin U.
)
,
V.C. Kuriakose
(
- Cochin U.
)

May, 1978

16 pages

Published in:

Pramana 11 (1978) 17

DOI:

10.1007/BF02846301

Report number:

PRINT-78-0880 (COCHIN)

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Abstract: (Springer)

Two dimensional sine-Gordon (SG) field theory on a lattice is studied using the single-site basis variational method of Drell and others. The nature of the phase transition associated with the spontaneous symmetry breakdown in a SG field system is clarified to be of second order. A generalisation is offered for a SG-type field theory in two dimensions with a potential of the from [cosn(√λ/m)ϕ−1].

FIELD THEORY: TWO-DIMENSIONAL
FIELD THEORY: CRITICAL PHENOMENA
sine-Gordon equation
APPROXIMATION: LATTICE
SPONTANEOUS SYMMETRY BREAKING

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