Improved Hamiltonian Lattice Gauge Theory
J. Carlsson, J. A. L. McIntosh, B. H. J. McKellar, L. C. L., Hollenberg
TL;DR
This paper introduces an improved lattice Hamiltonian for pure gauge theory that incorporates couplings between distant links, enhancing the accuracy of variational calculations in SU(2) gauge theory.
Contribution
It presents a novel formulation of the lattice Hamiltonian with extended link couplings, improving the modeling of gauge theories on the lattice.
Findings
Enhanced accuracy in variational calculations of SU(2) specific heat.
Demonstrated the effectiveness of the improved Hamiltonian in 2+1 dimensions.
Abstract
We derive an improved lattice Hamiltonian for pure gauge theory, coupling arbitrarily distant links in the kinetic term. The level of improvement achieved is examined in variational calculations of the SU(2) specific heat in 2+1 dimensions.
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