59 research outputs found
Duality in Long-Range Ising Ferromagnets
It is proved that for a system of spins having an
interaction energy with all the
strictly positive,one can construct a dual formulation by associating a dual
spin to each triplet of distinct sites and . The
dual interaction energy reads with , and it is invariant under
local symmetries. We discuss the gauge-fixing procedure, identities relating
averages of order and disorder variables and representations of various
quantities as integrals over Grassmann variables. The relevance of these
results for Polyakov's approach of the 3D Ising model is briefly discussed.Comment: 16 pp., UIOWA-91-2
Remarks Concerning Polyakov's Conjecture for the 3D Ising Model and the Hierarchical Approximation
We consider the possibility of using the hierarchical approximation to
understand the continuum limit of a reformulation of the 3D Ising model
initiated by Polyakov. We introduce several new formulations of the
hierarchical model using dual or fermionic variables. We discuss several
aspects of the renormalization group transformation in terms of these new
variables. We mention a reformulation of the model closely related to string
models proposed by Zabrodin.Comment: 7 pp., UIOWA-91-2
Quantum Simulating Lattice Gauge Theories with Optical Lattices
Presentation from Near-term Applications of Quantum Computing, Fermilab, 06-07 Dec 201
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