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arXiv · 0805.2878

Quantum phase transition in a far from equilibrium steady state of XY spin chain

Tomaz Prosen·Iztok Pizorn
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Abstract

Using quantization in the Fock space of operators we compute the non-equilibrium steady state in an open Heisenberg XY spin 1/2 chain of finite but large size coupled to Markovian baths at its ends. Numerical and theoretical evidence is given for a far from equilibrium quantum phase transition with spontaneous emergence of long-range order in spin-spin correlation functions, characterized by a transition from saturation to linear growth with the size of the entanglement entropy in operator space.

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Tomaz Prosen, Iztok Pizorn. 2008-10-01. Quantum phase transition in a far from equilibrium steady state of XY spin chain. https://doi.org/10.1103/physrevlett.101.105701

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