Characterizing Ground and Thermal States of Few-Body Hamiltonians
Characterizing Ground and Thermal States of Few-Body Hamiltonians
The question whether a given quantum state is a ground or thermal state of a few-body Hamiltonian can be used to characterize the complexity of the state and is important for possible experimental implementations. We provide methods to characterize the states generated by two- and, more generally, k-body Hamiltonians as …