Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published May 15, 2004 | Published + Accepted Version
Journal Article Open

Spontaneous breaking of Lorentz invariance

Abstract

We describe how a stable effective theory in which particles of the same fermion number attract may spontaneously break Lorentz invariance by giving a nonzero fermion number density to the vacuum (and therefore dynamically generating a chemical potential term). This mechanism yields a finite vacuum expectation value ⟨¯ψγ^μψ⟩, which we consider in the context of proposed models that require such a breaking of Lorentz invariance in order to yield composite degrees of freedom that act approximately like gauge bosons. We also make general remarks about how the background source provided by ⟨¯ψγ^μψ⟩ could relate to work on signals of Lorentz violation in electrodynamics.

Additional Information

© 2004 American Physical Society. (Received 6 December 2003; published 14 May 2004) The author would like to thank his advisor, M. B. Wise, for his guidance, and P. Kraus, J. D. Bjorken, J. Jaeckel, H. Ooguri, K. Sigurdson, and D. O'Connell for useful exchanges. Thanks are also due to O. Bertolami and R. Lehnert for pointing out references to other work on Lorentz noninvariance which were missing from the first draft. This work was financially supported in part by the California Institute of Technology

Attached Files

Published - PhysRevD.69.105007.pdf

Accepted Version - 0311127.pdf

Files

0311127.pdf
Files (592.1 kB)
Name Size Download all
md5:b8eb14abbbcdb73285654cd4d6019d7f
330.2 kB Preview Download
md5:9b1053c796292daabb596710ca613bbd
261.9 kB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 25, 2023