Quantum kinetic Ising models

Abstract

In this paper, we introduce a quantum generalization of classical kinetic Ising models (KIM), described by a certain class of quantum many-body master equations. Similarly to KIMs with detailed balance that are equivalent to certain Hamiltonian systems, our models reduce to a set of Hamiltonian systems determining the dynamics of the elements of the many-body density matrix. The ground states of these Hamiltonians are well described by the matrix product, or pair entangled projected states.We discuss critical properties of such Hamiltonians, as well as entanglement properties of their low-energy states. © IOP Publishing Ltd. and Deutsche Physikalische Gesellschaft.