Variational optimizer for the PEPS network (varipeps.optimization)

• Implementation of the basinhopping optimizer for the PEPS model (varipeps.optimization.basinhopping)
  • VariPEPS_Basinhopping
• Methods to calculate the CTRMG env and expectation value along with the gradient (varipeps.optimization.inner_function)
  • calc_ctmrg_expectation()
  • calc_ctmrg_expectation_custom()
  • calc_ctmrg_expectation_custom_value_and_grad()
  • calc_ctmrg_expectation_value_and_grad()
  • calc_preconverged_ctmrg_value_and_grad()
• Implementation of line search methods for the CTMRG variational optimization (varipeps.optimization.line_search)
  • NoSuitableStepSizeError
  • line_search()
• Implementation of the variational optimizer for the PEPS model (varipeps.optimization.optimizer)
  • autosave_function()
  • optimize_peps_network()