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Self-interacting dark matter in the solar system

Ganguly, Avijit K. and Jain, Pankaj and Mandal, Subhayan and Stokes, Sarah (2007) Self-interacting dark matter in the solar system. Physical Review D, 76 (2). Art. No. 025026. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:GANprd07

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Abstract

Weakly coupled, almost massless, spin 0 particles have been predicted by many extensions of the standard model of particle physics. Recently, the PVLAS group observed a rotation of polarization of electromagnetic waves in vacuum in the presence of transverse magnetic field. This phenomenon is best explained by the existence of a weakly coupled light pseudoscalar particle. However, the coupling required by this experiment is much larger than the conventional astrophysical limits. Here we consider a hypothetical self-interacting pseudoscalar particle which couples weakly with visible matter. Assuming that these pseudoscalars pervade the galaxy, we show that the solar limits on the pseudoscalar-photon coupling can be evaded.


Item Type:Article
Additional Information:©2007 The American Physical Society (Received 17 October 2006; revised 8 May 2007; published 24 July 2007)
Subject Keywords:celestial mechanics; dark matter; electromagnetic wave polarisation; solar system
Issue or Number:2
Record Number:CaltechAUTHORS:GANprd07
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:GANprd07
Alternative URL:http://dx.doi.org/10.1103/PhysRevD.76.025026
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8486
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:15 Aug 2007
Last Modified:02 Oct 2019 23:51

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