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Millicharged Dark Matter in Quantum Gravity and String Theory

Authors :
Fang Ye
Pablo Soler
Gary Shiu
Source :
Physical Review Letters. 110
Publication Year :
2013
Publisher :
American Physical Society (APS), 2013.

Abstract

We examine the milli-charged dark matter scenario from a string theory perspective. In this scenario, kinetic and mass mixings of the photon with extra U(1) bosons are claimed to give rise to small electric charges, carried by dark matter particles, whose values are determined by continuous parameters of the theory. This seems to contradict folk theorems of quantum gravity that forbid the existence of irrational charges in theories with a single massless gauge field. By considering the underlying structure of the U(1) mass matrix that appears in type II string compactifications, we show that milli-charges arise exclusively through kinetic mixing, and require the existence of at least two exactly massless gauge bosons.<br />4 pages

Details

ISSN :
10797114 and 00319007
Volume :
110
Database :
OpenAIRE
Journal :
Physical Review Letters
Accession number :
edsair.doi.dedup.....d960e296af603bc22c58aba83b4dab7b
Full Text :
https://doi.org/10.1103/physrevlett.110.241304