Astrophysical constraints on large extra dimensions

被引：190

作者：

Barger, V ^{[1
]}

Han, T ^{[1
]}

Kao, C ^{[1
]}

Zhang, RJ ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICS LETTERS B | 1999年 / 461卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(99)00795-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the Kaluza-Klein (KK) scenario with n large extra dimensions where gravity propagates in the 4 + n dimensional bulk of spacetime while gauge and matter fields are confined to a four dimensional subspace, the light gravitation KK modes can be produced in the Sun, red giants and supernovae. We study the energy-loss rates through photon-photon annihilation, electron-positron annihilation, gravi-Compton-Primakoff scattering, gravi-bremsstrahlung and nucleon-nucleon bremsstrahlung, and derive lower limits to the string scale M-s. The most stringent lower limit obtained from SN1987A leads to M-s > 30-130 TeV (2.1-9.3 TeV) for the case of two (three) large extra dimensions. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：34 / 42

页数：9

共 31 条

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