Low-energy limits on the antisymmetric tensor field background on the brane and on the non-commutative scale

Irina Mocioiu, Maxim Pospelov, Radu Roiban

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163 Scopus citations

Abstract

A non-vanishing vacuum expectation value for an antisymmetric tensor field leads to the violation of Lorentz invariance on the brane. This violation is controlled by the θ(μν) parameter, which has a dimension of inverse mass squared. We assume that the zeroth order term in θ-expansion represents the Standard Model and study the effects induced by linear terms in θ(μν). Low-energy precision experiments place the limit on the possible size of this background at the level of 1/√θ ≥ 5 x 1014 GeV. This poses certain difficulty for the TeV-range string scale models, in which the antisymmetric field has to acquire a relatively large mass to ensure that θ(μν) = 0 and avoid cosmological moduli problem. (C) 2000 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)390-396
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume489
Issue number3-4
DOIs
StatePublished - Sep 21 2000

Bibliographical note

Funding Information:
M.P. thanks A. Lossev for very helpful discussions and interest taken in this work. I.M. and R.R. thank I. Chepelev for discussions. This work was supported in part by the Department of Energy under Grant No. DE-FG02-94ER40823 and NSF grant PHY-9722101.

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