Local-time representation of path integrals.

Local-time representation of path integrals.
复制标题

路径积分的本地时间表示

DOI:
10.1103/physreve.92.062137
复制
发表时间:
2015
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
通讯作者:
V. Zatloukal
V. Zatloukal
中科院分区:
--
文献类型:
--
作者:
P. Jizba;V. Zatloukal

文献摘要

参考文献

被引文献

相似文献

Please try later.
We derive a local-time path-integral representation for a generic one-dimensional time-independent system. In particular, we show how to rephrase the matrix elements of the Bloch density matrix as a path integral over-dependent local-time profiles. The latter quantify the time that the sample pathsin the Feynman path integral spend in the vicinity of an arbitrary point. Generalization of the local-time representation that includes arbitrary functionals of the local time is also provided. We argue that the results obtained represent a powerful alternative to the traditional Feynman-Kac formula, particularly in the high- and low-temperature regimes. To illustrate this point, we apply our local-time representation to analyze the asymptotic behavior of the Bloch density matrix at low temperatures. Further salient issues, such as connections with the Sturm-Liouville theory and the Rayleigh-Ritz variational principle, are also discussed.
使用边界扰动对功能行列式进行正则化
DOI: 10.1088/0305-4470/28/23/032
发表时间: 1995
期刊: Journal of Physics A
影响因子: --
作者:
A. McKane;M. Tarlie
通讯作者: M. Tarlie
极坐标中从 eV 到 GeV 的路径积分
DOI: --
发表时间: 1985
期刊:
影响因子: --
作者:
F. Steiner
通讯作者: F. Steiner
DOI: --
发表时间: 1969
期刊:
影响因子: --
作者:
D. Peak;A. Inomata
通讯作者: A. Inomata
维格纳-柯克伍德展开的路径积分方法。
DOI: --
发表时间: 2013
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
作者:
P. Jizba;Václav Zatloukal
通讯作者: Václav Zatloukal
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
J. Mur;A. Polls;F. Mazzanti
通讯作者: F. Mazzanti