Title of article :
Particle creation from Q-balls Original Research Article
Author/Authors :
Stephen S. Clark، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
33
From page :
38
To page :
70
Abstract :
Non-topological solitons, Q-balls can arise in many particle theories with image global symmetries. As was shown by Cohen et al. [A.G. Cohen, S.R. Coleman, H. Georgi, A. Manohar, The evaporation of Q-balls, Nucl. Phys. B 272 (1986) 301], if the corresponding scalar field couples to massless fermions, large Q-balls are unstable and evaporate, producing a fermion flux proportional to the Q-ballʹs surface. In this paper we analyse Q-ball instabilities as a function of Q-ball size ans fermion mass. In particular, we construct an exact quantum-mechanical description of the evaporating Q-ball. This new construction provides an alternative method to compute Q-ballʹs evaporation rates. We shall also find the new expression for the upper bound on evaporation as a function of the produced fermion mass and study the effects of Q ballʹs size on particle production.
Journal title :
Nuclear Physics B
Serial Year :
2006
Journal title :
Nuclear Physics B
Record number :
875179
Link To Document :
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