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

• 来源期刊: 中国物理B（英文版）
• 关键词: double Lagrangian density canonical scalar field dark energy
• 年，卷（期）: 2007,（12）
• 页码范围: 3560-3565
• 页数: 6页
• 语种: 英文

摘要

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.