seemps.expectation.product_expectation

seemps.expectation.product_expectation(state: MPS, operator_list: list[TypeAliasForwardRef('~seemps.typing.Operator')]) → Weight

Expectation value of a product of local operators \(\langle\psi|O_0 O_1 \cdots O_{N-1}|\psi\rangle\).

Parameters:

stateMPS

State \(\psi\) onto which the expectation values are computed.

operator_listlist[Operator]

List of operators, with the same length len(operator_list) == len(state)

Returns:

float | complex

Expectation value.