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We investigate the fluctuations of the spin current for the one dimensional XX spin chain starting from the domain wall initial condition. The generating function of the current is shown… Click to show full abstract
We investigate the fluctuations of the spin current for the one dimensional XX spin chain starting from the domain wall initial condition. The generating function of the current is shown to be written as a determinant with the Bessel kernel. An exact analytical expression for the large deviation function is obtained by applying the Coulomb gas method. Our results are also compared with DMRG calculations.
Keywords:
current one;
one dimensional;
dimensional spin;
spin chain;
function;
spin current
Journal Title: Journal of Statistical Mechanics: Theory and Experiment
Year Published: 2019
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Journal Title: Journal of Statistical Mechanics: Theory and Experiment
Year Published: 2019
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!