Topological low-temperature limit of Z(2) spin-gauge theory in three dimensions

Details Topological low-temperature limit of Z(2) spin-gauge theory in three dimensions Topological low-temperature limit of Z(2) spin-gauge theory in three dimensions

2006-08-25

arxiv.org/abs/hep-th/0608189v1

Phys.Rev.D75:125009,2007

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, no figures

Scientific paper

10.1103/PhysRevD.75.125009

We study Z(2) lattice gauge theory on triangulations of a compact 3-manifold. We reformulate the theory algebraically, describing it in terms of the structure constants of a bidimensional vector space H equipped with algebra and coalgebra structures, and prove that in the low-temperature limit H reduces to a Hopf Algebra, in which case the theory becomes equivalent to a topological field theory. The degeneracy of the ground state is shown to be a topological invariant. This fact is used to compute the zeroth- and first-order terms in the low-temperature expansion of Z for arbitrary triangulations. In finite temperatures, the algebraic reformulation gives rise to new duality relations among classical spin models, related to changes of basis of H.

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