Berry Phases of Classical Trajectories in the Presence of Hard-Wall Boundaries

Details Berry Phases of Classical Trajectories in the Presence of Hard-Wall Boundaries Berry Phases of Classical Trajectories in the Presence of Hard-Wall Boundaries

2001-06-20

arxiv.org/abs/cond-mat/0106393v1

Physica E 18, 85 (2003)

Physics

Condensed Matter

REVTeX, 6 pages, 3 figures

Scientific paper

We study the quantum propagator in the semiclassical limit with hard-wall potentials. We show that, upon each reflection by the hard wall, a Berry phase $\pi$ is accumulated and leads to interferences between different classical trajectories. Including the Berry phase caused by the hard walls, the modified Van Vleck's formula is derived. We also discuss the close relations among quantum statistics, discrete gauge symmetry, and hard-wall constraints. Most of all, we formulate a new quantization rule that applies to {\it both} smooth and sharp boundary potentials. It provides an easy way to compute quantized energies in the semiclassical limit and is extremely useful for many physical systems.

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