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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/070/03/0439-0456

    • Keywords

       

      Axions; pseudoscalar-photon mixing; wave propagation in background magnetic field; polarization.

    • Abstract

       

      We solve the general problem of mixing of electromagnetic and scalar or pseudoscalar fields coupled by axion-type interactions $L_{\text{int}} = g_{\phi}\phi \epsilon_{\mu \nu \alpha \beta} F^{\mu \nu} F^{\alpha \beta}$. The problem depends on several dimensionful scales, including the magnitude and direction of background magnetic field, the pseudoscalar mass, plasma frequency, propagation frequency, wave number, and finally the pseudoscalar coupling. We apply the results to the first consistent calculations of the mixing of light propagating in a background magnetic field of varying directions, which show a great variety of fascinating resonant and polarization effects.

    • Author Affiliations

       

      Sudeep Das1 Pankaj Jain2 John P Ralston3 Rajib Saha2

      1. Department of Astrophysical Sciences, Princeton University, New Jersey 08544, USA
      2. Physics Department, Indian Institute of Technology, Kanpur 208 016, India
      3. Department of Physics & Astronomy, University of Kansas, Lawrence, KS-66045, USA

    • Dates

       
      Published
      March 2008
      Manuscript received
      21 August 2006
      Manuscript revised
      24 August 2007
      Accepted
      4 October 2007

  • Pramana – Journal of Physics | News

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