Original paper
Spin Hartree-Fock approach to studying quantum Heisenberg antiferromagnets in low dimensions
Abstract
We construct a new mean-field theory for quantum (spin-1/2) Heisenberg antiferromagnet in one (1D) and two (2D) dimensions using a Hartree-Fock decoupling of the four-point correlation functions. We show that the solution to the self-consistency equations based on two-point correlation functions does not produce any unphysical finite-temperature phase transition in accord with Mermin-Wagner theorem, unlike the common approach based on the...
Paper Details
Title
Spin Hartree-Fock approach to studying quantum Heisenberg antiferromagnets in low dimensions
Published Date
May 8, 2018
Volume
97
Issue
18
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