exp() [3/3]

ProdOp syten::IPEPSv2::exp	(	SDef const	tau,
		SumOp const &	sum_op,
		Index const	order
	)

Returns a first or second order approximation to \( e^{\tau \hat O} \) for the sum operator op and prefactor tau.

References syten::IPEPSv2::ProdOp::combine_neighbours(), syten::IPEPSv2::SumOp::desc, syten::IPEPSv2::ProdOp::desc, exp(), if_constexpr, syten::IPEPSv2::ProdOp::mult_first(), syten::IPEPSv2::ProdOp::mult_last(), syten::IPEPSv2::SumOp::ops, SYTEN_ASSERT, SYTEN_ASSERT_MSG, and syten::to_string_rd().

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