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The dynamical free energy and the Loschmidt echo for a class of quantum quenches in the Heisenberg spin chain

✍ Scribed by Pozsgay, Balázs

Book ID
127093607
Publisher
Institute of Physics
Year
2013
Tongue
English
Weight
481 KB
Volume
2013
Category
Article
ISSN
1742-5468

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We investigate the Hamiltonian dynamics of two low-dimensional quantum spin systems in a random ÿeld, at the inÿnite-temperature limit: the XY chain and the two-leg XY ladder with interchain Ising interactions. We determine the longitudinal spin autocorrelation functions of the spin-1 2 XY chain and