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quant-ph2011★ 117 cited
Diverging equilibration times in long-range quantum spin models
Michael Kastner
The approach to equilibrium is studied for long-range quantum Ising models where the interaction strength decays like r^{-α} at large distances r with an exponent not exceeding…
quant-ph2009★ 13 cited
Finite-Temperature Fidelity-Metric Approach to the Lipkin-Meshkov-Glick Model
D. D. Scherer, C. A. Müller, M. Kastner
The fidelity metric has recently been proposed as a useful and elegant approach to identify and characterize both quantum and classical phase transitions. We study this metric on t…