,The double Lagrangian with U(1, J) symmetry and its applications to the cosmology

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By introducing the double complex scalar field, this paper constructs the double Lagrangian with the potential V(φ(J), φ*(J)) = V(| φ(J)|), which not only can describe the evolution of quintom Universe, but also can naturally give the spintessence and hessence Universe. Furthermore, the U(1, J) symmetry of the double complex Lagrangian displacement in our model.
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