Abstract
The embedding of a p-brane into higher dimensional spacetime breaks not only translational symmetries transverse to the worldvolume, but also Lorentz symmetries. There exist formulations for p-brane actions which associate Goldstone bosons with the generators of the broken Lorentz symmetries. These Goldstone bosons are unphysical, in that they can be eliminated in favour of other Goldstone bosons either via their equations of motion or via the imposition of an inverse Higgs constraint. In this paper, we examine the inter-relationship between the coset parameterization necessary to implement the inverse Higgs constraint, the equivalence of the inverse Higgs constraint to equations of motion, and the ability to find versions of the action with no explicit dependence on the unphysical Goldstone bosons. This is evidence that the unphysical Goldstone bosons are gauge degrees of freedom associated with an enlarged isotropy group. In addition to p-brane actions, a number of other cases, including conformally invariant dilaton actions, are shown to exhibit the same structure.
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ArXiv ePrint: 1009.3696
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McArthur, I.N. Nonlinear realizations of symmetries and unphysical Goldstone bosons. J. High Energ. Phys. 2010, 140 (2010). https://doi.org/10.1007/JHEP11(2010)140
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DOI: https://doi.org/10.1007/JHEP11(2010)140