- Access by Xinjiang University
Collapse of axionic domain wall and axion emission
Phys. Rev. D 50, 4821 – Published 15 October, 1994
DOI: https://doi.org/10.1103/PhysRevD.50.4821
Abstract
We examine the collapse of an axionic domain wall bounded by an axionic string. It is found that the collapse proceeds quickly and axionic domain walls disappear. However axions are emitted in the collapse and its energy density increases during the radiation-dominated era and contributes significantly to the present mass density of the Universe. In particular the axion emitted from the wall can account for the dark matter in the Universe for ≳ GeV.
References (16)
- R.D. Peccei and H.R. Quinn, Phys. Rev. Lett. 38, 1440 (1977).
- F. Wilczek, Phys. Rev. Lett. 40, 279 (1978).
- J.E. Kim, Phys. Rev. Lett. 43, 103 (1979); M. Shifman, A. Vainshtein and V. Zakharov, Nucl. Phys. B166, 493 (1980).
- M. Dine, W. Fischler and M. Srednicki, Phys. Lett. 104B, 199 (1981).
- G. 't Hooft, Phys. Rev. Lett. 37, 8 (1976).
- B. S. Ryden, W. H. Press and D. N. Spergel, Astrophys. J. 357, 293 (1990).
- A. Linde, Phys. Lett. B 259, 38 (1991).
- R. Davis, Phys. Lett. 180B, 225 (1986).
- D. Harari and P. Sikivie, Phys. Lett. B 195, 361 (1987); C. Hagmann and P. Sikivie, Nucl. Phys. B363, 247 (1991).
- D.H. Lyth, Phys. Lett. B 275, 279 (1992).
- A. Vilenkin, Phys. Rep. 121, 263 (1985).
- L. M. Widrow, Phys. Rev. D 40, 1002 (1989).
- M. Nagasawa, Phys. Lett. B 318, 53 (1993).
- T.P. Walker, G. Steigman, D.N. Schramm, K.A. Olive and H S. Kang, Astrophys. J. 376, 51 (1991).
- J. Preskill, M. Wise and F. Wilczek, Phys. Lett. 180B, 225 (1983); L. Abbott and P. Sikivie, ibid. 180, 133 (1983); M. Dine and W. Fischler, ibid. 180, 137 (1983).
- M.S. Turner, Phys. Rev. D 33, 889 (1986).