seemps.expectation.all_expectation1

seemps.expectation.all_expectation1(state, O)

Vector of expectation values \(v_i = \langle\psi|O_i|\psi\rangle\) of local operators acting on individual sites of the MPS.

Parameters:

state: MPS

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

operatorOperator | list[Operator]

If operator is an observable, it is applied on each possible site. If it is a list, the expectation value of operator[i] is computed on the i-th site.

Returns:

Vector

Numpy array of expectation values.