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arXiv · 1402.1744

Evolution of the magnetization after a local quench in the critical transverse-field Ising chain

F. Iglói·G. Roósz·L. Turban
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Abstract

We study the time evolution of the local magnetization in the critical Ising chain in a transverse field after a sudden change of the parameters at a defect. The relaxation of the defect magnetization is algebraic and the corresponding exponent, which is a continuous function of the defect parameters, is calculated exactly. In finite chains the relaxation is oscillating in time and its form is conjectured on the basis of precise numerical calculations.

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F. Iglói, G. Roósz, L. Turban. 2014-03-26. Evolution of the magnetization after a local quench in the critical transverse-field Ising chain. https://doi.org/10.1088/1742-5468%2F2014%2F03%2Fp03023

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