Phys. Rev. A 67, 054103 (2003) [4 pages]Phase evolution in a multicomponent systemReceived 10 February 2003; published 29 May 2003 We derive a general expression for the expectation value of the phase acquired by a time dependent wave function in a multicomponent system, as excursions are made in its coordinate space. We then obtain the mean phase for the (linear dynamic E⊗ε) Jahn-Teller situation in an electronically degenerate system. We interpret the phase-change as an observable measure of the effective nodal structure of the wave function. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.054103
DOI:
10.1103/PhysRevA.67.054103
PACS:
03.65.Vf, 31.50.Gh, 31.30.Gs, 71.70.Ej
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