Quantum hysteresis loops in microscopic system: The loop area as a dynamical parameter

Pramana

Chandan Kumar Mondal1¹  S P Bhattacharyya¹ 

[1] Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India$$

关键词: Quantum hysteresis;    stochastic resonance;    quantum dynamics;    Fourier grid methods;    stochastically perturbed systems.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The area enclosed by hysteresis loops in a periodically forced bistable microscopic system at zero-temperature is examined by using the time dependent Hellmann–Feynman theorem and the Fourier grid Hamiltonian recipe for solving time-dependent Schrödinger equation. Effects of non-zero temperatures are explored with reference to a symmetric double well potential. The barrier crossing or, relaxation rates are shown to correlate systematically with the area of the loop. The possible use of hysteresis loop area in designing field parameters for optimal control is suggested.

【 授权许可】

Unknown