TY - JOUR

T1 - Low-energy limits on the antisymmetric tensor field background on the brane and on the non-commutative scale

AU - Mocioiu, Irina

AU - Pospelov, Maxim

AU - Roiban, Radu

N1 - 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.

PY - 2000/9/21

Y1 - 2000/9/21

N2 - 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.

AB - 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.

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U2 - 10.1016/S0370-2693(00)00928-X

DO - 10.1016/S0370-2693(00)00928-X

M3 - Article

AN - SCOPUS:0034699511

SN - 0370-2693

VL - 489

SP - 390

EP - 396

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -