HOME    |    BROWSE    |    SEARCH    |    SUBSCRIPTION   |    SUBMISSION    |    REGISTRATION

Quick Search:
Author: Title/Abstract: Vol./No: Page:
PTP Online Top > Volume 79 (1988) > Number 4
| Next Article >

Prog. Theor. Phys. Vol. 79 No. 4 (1988) pp. 800-818

[ Full Text PDF : FREE ACCESS (1034K) ]

Baryogenesis through Nonequilibrium Processes in the Inflationary Universe

Jun'ichi Yokoyama, Hideo Kodama* and Katsuhiko Sato

Department of Physics, University of Tokyo, Tokyo 113
*Department of Physics, College of Liberal Arts and Sciences, Kyoto University, Kyoto 606

(Received December 14, 1987)

Abstract:

Baryogenesis in the reheating phase of the inflationary universe is investigated, taking into account non-thermal production of baryon-number-nonconserving gauge and Higgs bosons directly from an inflation field. Reheating processes and time evolution of asymmetries in quarks and leptons are traced numerically in terms of the reduced Boltzmann equations. Thereby the dependence of the final baryon asymmetry on various parameters such as CP violation, reheat temperature and Higgs boson mass is estimated for a specific GUT model. In particular it is found that the baryon asymmetry may change its sign in the course of relaxation even when only one species of Higgs bosons is relevant to baryogenesis. It is shown that this phenomenon can occur in any GUT model in general. Further the constraint on the reheat temperature TR to obtain an adequate baryon asymmetry is discussed and it is shown that TR can be as small as 105 GeV under the present experimental limit on proton life.


URL : http://ptp.ipap.jp/link?PTP/79/800/
DOI : 10.1143/PTP.79.800

[ Full Text PDF : FREE ACCESS (1034K) ] Citation:

References:

  1. A. H. Guth, Phys. Rev. D23 (1981), 347[APS].
  2. K. Sato, Mon. Not. R. Astron. Soc. 195 (1981), 467.
  3. A. D. Linde, Phys. Lett. 108B (1982), 389.
  4. A. D. Linde, Rep. Prog. Phys. 47 (1984), 952[IoP STACKS].
  5. K. Sato, in Cosmology of the Early Universe, ed. L. Z. Fang and R. Ruffini (World Scientific Pub., Singapore, 1984).
  6. S. Weinberg, Phys. Rev. Lett. 48 (1982), 1303[APS].
  7. J. Ellis, A. D. Linde and D. V. Nanopoulos, Phys. Lett. 127B (1983), 30.
  8. See, e.g., H. Nilles, Phys. Rep. 110 (1986), 1[CrossRef].
  9. M. Kawasaki and K. Sato, Phys. Lett. 189B (1987), 23.
  10. A. H. Guth and S.-Y. Pi, Phys. Rev. Lett. 49 (1982), 1110[APS].
  11. A. D. Sakharov, Zh. ETF Pis'ma 5 (1965), 32 [JETP Lett. 5 (1967), 24].
  12. M. Yoshimura, Phys. Rev. Lett. 41 (1978), 281[APS].
  13. E. W. Kolb and S. Wolfram, Nucl. Phys. B172 (1980), 224.
  14. J. N. Fry, K. A. Olive and M. S. Turner, Phys. Rev. D22 (1980), 2953[APS]; ibid. D22 (1980), 2977[APS]; Phys. Rev. Lett. 45 (1980), 2074[APS].
  15. J. A. Harvey, E. W. Kolb, D. B. Reiss and S. Wolfram, Nucl. Phys. B201 (1982), 16.
  16. E. W. Kolb and M. S. Turner, Ann. Rev. Nucl. Part. Sci. 33 (1983), 645.
  17. J. Yokoyama, H. Kodama, K. Sato and N. Sato, Int. J. Mod. Phys. A2 (1987), 1809. See also N. Sato, H. Kodama and K. Sato, Prog. Theor. Phys. 74 (1985), 405[PTP].
  18. A. D. Dolgov and A. D. Linde, Phys. Lett. 116B (1982), 329.
  19. A. Albrecht, P. J. Steinhardt, M. S. Turner and F. Wilczek, Phys. Rev. Lett. 48 (1982), 1437[APS].
  20. K. Sato and H. Kodama, Phys. Lett. 142B (1984), 18.
  21. L. F. Abbott, E. Farhi and M. B. Wise, Phys. Lett. 117B (1982), 29.
  22. M. Morikawa and M. Sasaki, Prog. Theor. Phys. 72 (1984), 782[PTP].
  23. M. Sakagami and A. Hosoya, Phys. Lett. 150B (1985), 342.
  24. M. Morikawa and M. Sasaki, Phys. Lett. 165B (1985), 59.
  25. M. Sakagami and A. Hosoya, Phys. Lett. 165B (1985), 315.
  26. M. Fukugita, private communication. See also M. Ruiz-Altaba, Phys. Rev. D34 (1986), 3549[APS].
  27. T. Yanagida and M. Yoshimura, Nucl. Phys. B168 (1980), 534.
  28. J. Yang, M. S. Turner, G. Steigman, D. N. Schramm and K. A. Olive, Astrophys. J. 281 (1984), 491.

[PTP HOME] [BROWSE] [SEARCH] [SUBSCRIPTION] [SUBMISSION] [REGISTRATION]

Copyright © Progress of Theoretical Physics 2013 All rights reserved.