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issp-center-dev / TeNeS

Massively parallel tensor network solver
http://www.pasums.issp.u-tokyo.ac.jp/tenes/en
GNU General Public License v3.0
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local gauge fixing #39

Closed yomichi closed 3 years ago

yomichi commented 3 years ago

TeNeS's local gauge fixing operation is an iterative procedure. One iteration updates the gauge Dof on each bond in sequence. One gauge fixing operation is performed after each iteration of the simple update.

Parameters in [parameter.simple_update] controls the behavior of operations as the following (default values are shown)

[parameter.simple_update]
gauge_fix = false
gauge_maxiter = 100
gauge_convergence_epsilon = 1e-2

Ref.: PRB 99, 195195 (2019)