Merons and Thomas Precession

Joseph Samuel
Phys. Rev. Lett. 76, 717 – Published 29 January 1996
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Abstract

In a recent study of Thomas precession of electron spin in the context of the Dirac equation, Shankar and Mathur identify the non-Abelian Berry potential (arising from Kramers degeneracy) with the meron. We point out that there is a global mathematical subtlety which prevents such an identification. We go on to clarify the physical context in which merons do arise as Berry potentials.

  • Received 28 November 1994

DOI:https://doi.org/10.1103/PhysRevLett.76.717

©1996 American Physical Society

Authors & Affiliations

Joseph Samuel

  • Raman Research Institute, Bangalore, India 560 080

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Issue

Vol. 76, Iss. 5 — 29 January 1996

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