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

By I. Mocioiu, M. Pospelov, R. Roiban. 2000

146 citations recorded by the source corpus.

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 θμν 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 θμν. Low-energy precision experiments place the limit on the possible size of this background at the level of 1/ θ ≳5 ×10 14 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 θμν=0 and avoid cosmological moduli problem.

Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/8f5d33bbfb5356541a1e98e68d5ca1d9917afb5d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

In Statistical and Nonlinear Physics

Citations in the corpus

Lorentz violation at high energy: Concepts, phenomena, and astrophysical constraints (2005, background): “Aside from general issues of principle, specific hints of Lorentz violation have come from tentative calculations in various approaches to quantum gravity: string theory tensor VEVs [4], cosmologically varying moduli [5], spacetime foam [6], semiclassical spin-network calculations in Loop QG [7,8], ”
Planck-scale modified dispersion relations and Finsler geometry (2006, background): “A succinct list includes: arguments based on string field theory tensor VEVs [10], cosmologically varying moduli scenarios [11], spacetime foam models [12], semiclassical spin-network calculations in Loop QG [13, 14], as well as non-commutative geometry studies [15, 16, 17, 18] and some brane-world ”
Modern Tests of Lorentz Invariance (2005, background): “A stronger bound of ΛNC > 5·1014 GeV [218] on the non-commutativity scale can be derived from clock comparison experiments with Cs/Hg magnetometers [46] (see section 5.”