Numerical Path Integral Approach to Quantum Dynamics and Stationary Quantum States  

作　　者：Ilkka Ruokosenmaki Tapio T.Rantala 

机构地区：[1]Department of Physics,Tampere University of Technology,Finland

出　　处：《Communications in Computational Physics》2015年第6期91-103,共13页计算物理通讯（英文）

摘　　要：Applicability of Feynman path integral approach to numerical simulations of quantum dynamics of an electron in real time domain is examined.Coherent quantum dynamics is demonstrated with one dimensional test cases(quantum dot models)and performance of the Trotter kernel as compared with the exact kernels is tested.Also,a novel approach for finding the ground state and other stationary sates is presented.This is based on the incoherent propagation in real time.For both approaches the Monte Carlo grid and sampling are tested and compared with regular grids and sampling.We asses the numerical prerequisites for all of the above.

关 键 词：Path integral real time domain quantum dynamics incoherent propagation stationary states 

分 类 号：O17[理学—数学]