Work statistics across a quantum critical surface.
| Autor: | Zhang F; School of Physics, Peking University, Beijing 100871, China., Quan HT; School of Physics, Peking University, Beijing 100871, China; Collaborative Innovation Center of Quantum Matter, Beijing 100871, China; and Frontiers Science Center for Nano-optoelectronics, Peking University, Beijing 100871, China. |
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| Jazyk: | angličtina |
| Zdroj: | Physical review. E [Phys Rev E] 2022 Feb; Vol. 105 (2-1), pp. 024101. |
| DOI: | 10.1103/PhysRevE.105.024101 |
| Abstrakt: | We study the universality of work statistics of a system quenched through a quantum critical surface. By using the adiabatic perturbation theory, we obtain the general scaling behavior for all cumulants of work. These results extend the studies of Kibble-Zurek mechanism scaling of work statistics from an isolated quantum critical point to a critical surface. As an example, we study the scaling behavior of work statistics in the two-dimensional (2D) Kitaev honeycomb model featured with a critical line. By utilizing the trace formula for quadratic fermionic Hamiltonian, we obtain the exact characteristic function of work of the 2D Kitaev model at zero temperature. The results confirm our prediction. |
| Databáze: | MEDLINE |
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