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arXiv · 1206.4787

Relaxation Dynamics of Disordered Spin Chains: Localization and the Existence of a Stationary State

Simone Ziraldo·Alessandro Silva·Giuseppe E. Santoro
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Abstract

We study the unitary relaxation dynamics of disordered spin chains following a sudden quench of the Hamiltonian. We give analytical arguments, corroborated by specific numerical examples, to show that the existence of a stationary state depends crucially on the spectral and localization properties of the final Hamiltonian, and not on the initial state. We test these ideas on integrable one-dimensional models of the Ising or XY class, but argue more generally on their validity for more complex (nonintegrable) models.

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Simone Ziraldo, Alessandro Silva, Giuseppe E. Santoro. 2012-12-20. Relaxation Dynamics of Disordered Spin Chains: Localization and the Existence of a Stationary State. https://doi.org/10.1103/physrevlett.109.247205

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