Comment on ``Experimental Separation of Geometric and Dynamical Phases Using Neutron Interferometry"

Details Comment on ``Experimental Separation of Geometric and Dynamical Phases Using Neutron Interferometry" Comment on ``Experimental Separation of Geometric and Dynamical Phases Using Neutron Interferometry"

2001-03-24

arxiv.org/abs/quant-ph/0103134v1

Physics

Quantum Physics

Latex 6 pages;1 postscript figure; originally submitted to Phys.Rev.Lett.; at present forms part of a pending proposal for a n

Scientific paper

We analyse a recently reported neutron interference experiment to measure a geometric phase and attempt to bring out the inadequacy of the ``phase modulo 2\pi" approach to the geometric phase. A modified neutron interferometer experiment to observe 2n\pi phase changes of topological origin resulting from closed circuits around singularities in the parameter space of the experiment is proposed.

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