Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Properties of realistic cosmic-string loops

Robert J. Scherrer

Jean M. Quashnock*

David N. Spergel

William H. Press

  • Department of Physics, The Ohio State University, Columbus, Ohio 43210

  • Department of Physics, Princeton University, Princeton, New Jersey 08544

  • Princeton University Observatory, Princeton, New Jersey 08544

  • Harvard-Smithsonian Center for Astrophysics and Department of Physics, Harvard University, Cambridge, Massachusetts 02138

  • *Present address: Enrico Fermi Institute, University of Chicago, 5640 S. Ellis Ave., Chicago, IL 60637.

Phys. Rev. D 42, 1908 – Published 15 September, 1990

DOI: https://doi.org/10.1103/PhysRevD.42.1908

Abstract

We examine the angular momentum, gravitational radiation, number of kinks, and electromagnetic self-interaction for cosmic-string loops produced in a numerical simulation of loop fragmentation. The final distributions of both the string angular momenta and the power radiated in gravitational radiation appear to be independent of the initial conditions. The median specific angular momentum is |J|μl2=0.01. For gravitational radiation, γ(dEdt)Gμ2 is strongly peaked in the region γ=4060, with a distribution well fitted by p(γ)=(12πσγ2)exp[(1γμ)22σ2], with μ=1.74×102 and σ=5.85×103. Most stable daughter loops have between 2 and 5 kinks. Electromagnetic self-interaction can give rise to exponentially growing ac currents on highly asymmetric "random" loop trajectories. This dynamo property is not correlated with either self-intersection of the loops or with their angular momentum.

References (16)

  1. T. W. B. Kibble and N. Turok, Phys. Lett. 116B, 141 (1982)
  2. N. Turok, Nucl. Phys. B242, 520 (1984)
  3. C. J. Burden, Phys. Lett. 164B, 277 (1985)
  4. A. L. Chen, D. A. DiCarlo, and S. A. Hotes, Phys. Rev. D 37, 863 (1988)
  5. T. Vachaspati and A. Vilenkin, Phys. Rev. D 31, 3052 (1985)
  6. D. N. Spergel, W. H. Press, and R. J. Scherrer, Nature (London) 334, 682 (1988)
  7. D. N. Spergel, W. H. Press, and R. J. Scherrer, Phys. Rev. D 39, 379 (1989)
  8. R. J. Scherrer and W. H. Press, Phys. Rev. D 39, 371 (1989)
  9. J. Scherk, Rev. Mod. Phys. 47, 123 (1975)
  10. J. M. Quashnock and D. N. Spergel, Phys. Rev. D (to be published)
  11. S. Weinberg, Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity (Wiley, New York, 1972)
  12. B. Allen and S. Shellard (unpublished)
  13. D. Garfinkle and T. Vachaspati, Phys. Rev. D 36, 2229 (1987)
  14. C. Thompson, Phys. Rev. D 37, 283 (1988)
  15. D. Garfinkle and T. Vachaspati (unpublished)
  16. E. Witten, Nucl. Phys. B249, 557 (1985)

Outline

Information

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation