Correspondence of I- and Q-balls as non-relativistic condensates

Journal Article · Fri Aug 01 00:00:00 EDT 2014 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2014/08/051· OSTI ID:22373374

Mukaida, Kyohei; Takimoto, Masahiro ^[1]

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1. Department of Physics, Faculty of Science, University of Tokyo, Bunkyo-ku, Tokyo 133-0033 (Japan)

If a real scalar field is dominated by non-relativistic modes, then it approximately conserves its particle number and obeys an equation that governs a complex scalar field theory with a conserved global U(1) symmetry. From this fact, it is shown that the I-ball (oscillon) can be naturally understood as a projection (e.g., real part) of the non-relativistic Q-ball solution. In particular, we clarify that the stability of the I-ball is guaranteed by the U(1) symmetry in the corresponding complex scalar field theory as long as the non-relativistic condition holds. We also discuss the longevity of I-ball from the perspective of the complex scalar field in terms of U(1) charge violating processes.

• OSTI ID: 22373374
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
APPROXIMATIONS
EQUATIONS
MATHEMATICAL SOLUTIONS
RELATIVISTIC RANGE
SCALAR FIELDS
STABILITY
U-1 GROUPS