MPOState
class MPOState(sites, Ws, bc='finite', IdL=None, IdR=None, max_range=None, explicit_plus_hc=False)
A mediator class to make TeNPy’s MPO match the State interface.
This class simply ensures that a tenpy.networks.mpo.MPO object can work as a State instance.
Methods
initialize_from_lattice
classmethod initialize_from_lattice(lat, *, conserve=True)
Construct an identity MPOState instance matching the provided lattice shape.
Given a lattice, this method constructs a new MPO identity matching the shape of the lattice.
Parameters
- lat (Lattice) – the lattice describing the MPO sites.
- conserve (bool) – whether to conserve
Sz. This is a simplified version of the more elaborateconserveproperty ofSpinHalfSite. The boolean value simply indicatesSz(True) orNoneconservation (False)
Returns
An identity MPO.
Return type
overlap
overlap(initial_state)
Compute the overlap of this state with the provided initial state.
This implementation only supports instances of tenpy.networks.mps.MPS for initial_state.
Parameters
initial_state (Any) – the initial state with which to compute the overlap.
Raises
TypeError – if the provided initial state has an incompatible type.
Returns
The overlap of this state with the provided one.
Return type