A new method is described for the Monte Carlo evaluation of integrals of the form J?Qlx exp [ is(x)] that occur in the Feynman path integral representation of the time evolution operator, exp( -iHt/A). The method is general, strictly Monte Carlo based (and thus applicable to high dimensionality), an
โฆ LIBER โฆ
Effective non-oscillatory propagator for Feynman path integration in real time
โ Scribed by Nancy Makri
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 791 KB
- Volume
- 159
- Category
- Article
- ISSN
- 0009-2614
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The most commonly used short time propagator in a discretized Feynman path integral (and also several more sophisticated "improved" ones) is not correct through first order in the time increment Ar. The correct result for the phase (i.e. the action) of the short time propagator is developed in this