共 44 条
Flavon inflation
被引:29
作者:
Antusch, S.
[2
]
King, S. F.
[3
]
Malinsky, M.
[3
]
Velasco-Sevilla, L.
[1
]
Zavala, I.
[4
,5
]
机构:
[1] Abdus Salaam Int Ctr Theoret Phys, I-34014 Trieste, Italy
[2] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
[3] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
[4] Univ Durham, CPT, Durham DH1 3LE, England
[5] Univ Durham, IPPP, Durham DH1 3LE, England
关键词:
D O I:
10.1016/j.physletb.2008.07.051
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
We propose an entirely new class of particle physics models of inflation based on the phase transition associated with the spontaneous breaking of family symmetry responsible for the generation of the effective quark and lepton Yukawa couplings. We show that the Higgs fields responsible for the breaking of family symmetry, called flavons, are natural candidates for the inflaton field in new inflation, or the waterfall fields in hybrid inflation. This opens up a rich vein of possibilities for inflation, all linked to the physics of flavour, with interesting cosmological and phenomenological implications. Out of these, we discuss two examples which realise flavon inflation: a model of new inflation based on the discrete non-Abelian family symmetry group A(4) or A(27), and a model of hybrid inflation embedded in an existing flavour model with a continuous SU(3) family symmetry. With the inflation scale and family symmetry breaking scale below the Grand Unification Theory (GUT) scale, these classes of models are free of the monopole (and similar) problems which are often associated with the GUT phase transition. (C) 2008 Elsevier B.V. All rights reserved.
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页码:176 / 180
页数:5
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