2010

Light from Cosmic Strings

Steer, Daniele A., Vachaspati, Tanmay

Understand

The time-dependent metric of a cosmic string leads to an effective interaction between the string and photons - the "gravitational Aharonov-Bohm" effect -- and causes cosmic strings to emit light.

  • We evaluate the radiation of pairs of photons from cosmic strings and find that the emission from cusps, kinks and kink-kink collisions occurs with a flat spectrum at all frequencies up to the string scale.
  • Further, cusps emit a beam of photons, kinks emit along a curve, and the emission at a kink-kink collision is in all directions.
  • The emission of light from cosmic strings could provide an important new observational signature of cosmic strings that is within reach of current experiments for a range of string tensions.

Built on

  • E. J. Copeland and T. W. B. Kibble, Phys. Rev. D 80

    Original

    1960

    Earlier work this paper cites.

  • A. Vilenkin, T. Vachaspati, Phys. Rev. Lett. 58

    1987

    Earlier work this paper cites.

  • J. A. Frieman, Phys. Rev. D 39

    1989

    Earlier work this paper cites.

  • J. Garriga, D. Harari and E. Verdaguer, Nucl. Phys. B 339

    1990

    Earlier work this paper cites.

Similar

  • “Cosmic Strings and Other Topological Defects”, A. Vilenkin and E.P.S. Shellard, Cambridge University Press (1994)

    1994

    Cited alongside, same era.

  • “Quantum Field Theory”, M.E. Peskin and D.V. Schroeder, Westview Press (1995)

    1995

    Cited alongside, same era.

  • “Advanced Mathematical Methods for Scientists and Engineers”, C.M. Bender and A. Orszag, Springer-Verlag, New York (1999)

    1999

    Cited alongside, same era.

  • T. Damour and A. Vilenkin, Phys. Rev. D 64

    2001

    Cited alongside, same era.

Then

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