Long-Range Order in Nonequilibrium Interacting Quantum Spin Chains

摘要: We conjecture that nonequilibrium boundary conditions generically trigger long-range order in steady states of locally interacting quantum chains. Our result is based on large scale density matrix renormalization group simulations several models spin-1/2 chains which are driven far from equilibrium by coupling to a pair unequal Lindblad reservoirs attached the ends chain. In particular, we find phase transition exponentially decaying spin-spin correlations an integrable Heisenberg XXZ chain changing anisotropy parameter. Long-range also typically emerges after breaking integrability model.