Phys. Rev. D 71, 047701 (2005) [4 pages]Global defects in theories with Lorentz symmetry violationReceived 6 October 2004; published 25 February 2005 We study global topological defects in the Jacobson-Corley model which breaks Lorentz symmetry and involves up to fourth order derivatives. There is a window in the parameter space in which no solution exists. Otherwise, different profiles are allowed for the same values of the parameters. For a scale of Lorentz violation much higher than the scale of gauge symmetry breaking, the energy densities are higher, of the same order or smaller than in the usual case for domain walls, cosmic strings, and hedgehogs, respectively. Possible cosmological implications are suggested. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.71.047701
DOI:
10.1103/PhysRevD.71.047701
PACS:
11.27.+d, 11.30.Cp
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