We discuss the thermal entanglement close to a quantum phase transition by analyzing the pairwise entanglement for one-dimensional models in the quantum Ising universality class. We demonstrate that the entanglement sensitivity to thermal and to quantum fluctuations obeys universal T not equal 0-scaling laws. We show that the entanglement exhibits a peculiar universal crossover behaviour, shedding light on the mechanisms bringing quantum criticality up to finite temperatures.
Entanglement crossover close to a quantum critical point
Amico L;
2007
Abstract
We discuss the thermal entanglement close to a quantum phase transition by analyzing the pairwise entanglement for one-dimensional models in the quantum Ising universality class. We demonstrate that the entanglement sensitivity to thermal and to quantum fluctuations obeys universal T not equal 0-scaling laws. We show that the entanglement exhibits a peculiar universal crossover behaviour, shedding light on the mechanisms bringing quantum criticality up to finite temperatures.File in questo prodotto:
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