Universal effective action for the threedimensional ising ferromagnet
Abstract
We compute the universal effective action for onecomponent real scalar field in three Euclidean dimensions, in the case of spontaneously broken symmetry, from the Monte Carlo simulation of the threedimensional Ising model. We find that, in close analogy with the symmetric case, the effective potential is very well approximated by the sum of φ^{2}, φ^{4} and φ^{6} terms. An unexpected feature is the negative sign of the φ^{4} term.
 Publication:

Nuclear Physics B Proceedings Supplements
 Pub Date:
 June 1996
 DOI:
 10.1016/09205632(96)003477
 Bibcode:
 1996NuPhS..49..296T