Constraints on the quantum gravity scale from κ-Minkowski spacetime

被引：53

作者：

Borowiec, A. ^{[1
]}

Gupta, Kumar S. ^{[2
]}

Meljanac, S. ^{[3
]}

Pachol, A. ^{[1
]}

机构：

[1] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland

[2] Saha Inst Nucl Phys, Div Theory, Kolkata 700064, W Bengal, India

[3] Rudjer Boskovic Inst, HR-10002 Zagreb, Croatia

来源：

EPL | 2010年 / 92卷 / 02期

关键词：

DIFFERENTIAL STRUCTURE; POINCARE GROUP; RELATIVITY; ALGEBRA; TESTS; TIME;

D O I：

10.1209/0295-5075/92/20006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compare two versions of deformed dispersion relations (energy vs. momenta and momenta vs. energy) and the corresponding time delay up to the second-order accuracy in the quantum gravity scale (deformation parameter). A general framework describing modified dispersion relations and time delay with respect to different noncommutative kappa-Minkowski spacetime realizations is firstly proposed here and it covers all the cases introduced in the literature. It is shown that some of the realizations provide certain bounds on quadratic corrections, i.e. on quantum gravity scale, but it is not excluded in our framework that the quantum gravity scale is the Planck scale. We also show how the coefficients in the dispersion relations can be obtained through a multiparameter fit of the gamma-ray burst (GRB) data. Copyright (C) EPLA, 2010

引用

页数：6

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