期刊
PHYSICAL REVIEW B
卷 89, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.104303
关键词
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资金
- DPG [SFB/TRR21]
- Dipartimento di Fisica e Astronomia dell'Universita di Bologna for hospitality
We study the time evolution of entanglement entropy and entanglement spectrum in a finite-size system which crosses a quantum phase transition at different speeds. We focus on the transverse-field Ising model with a time-dependent magnetic field, which is linearly tuned on a time scale iota. The time evolution of the entanglement entropy displays different regimes depending on the value of iota, showing also oscillations which depend on the instantaneous energy spectrum. The entanglement spectrum is characterized by a rich dynamics where multiple crossings take place with a gap-dependent frequency. Moreover, we investigate the Kibble-Zurek scaling of the entanglement entropy and Schmidt gap.
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