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gr-qc2006★ 145 cited
Cosmic Duality in Quintom Universe
Yi-Fu Cai, Hong Li, Yun-Song Piao +1
In this paper we study the duality in two-field Quintom models of Dark Energy. We find that an expanding universe dominated by Quintom-A field is dual to a contracting universe wit…
hep-ph2006★ 86 cited
An SO(10) GUT Model with Flavor Symmetry
Yi Cai, Hai-Bo Yu
We present a supersymmetric grand unification model based on SO(10) group with flavor symmetry. In this model, the fermion masses are from Yukawa couplings involving …