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论文题目:	Inflation from a no-scale supersymmetric SU(4)(C) x SU(2)(L) x SU(2)(R) model
论文题目英文:
作者:	Ahmed, Waqas; Karozas, Athanasios
论文出处:
刊物名称:	PHYSICAL REVIEW D
年:	2018
卷:	98
期:	2
页:	23538
联系作者:	Ahmed, W (reprint author)
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摘要:	We study inflation in a supersyrnrnetric Pati-Salam model driven by a potential generated in the context of no-scale supergravity. The Pati-Salam gauge group SU(4)(C) x SU(2)(L) x SU(2)(R) is supplemented with a Z(2) symmetry. Spontaneous breaking via the SU(4) adjoint leads to the left-right symmetric group. Then the SU(2)R breaks at an intermediate scale and the inflaton is a combination of the neutral components of the SU (2) doublets. We discuss various limits of the parameter space, and we show that consistent solutions with the cosmological data for the spectral index n(s) and the tensor-to-scalar ratio r are found for a wide range of the parameter space of the model. Regarding the latter, which is a canonical measure of primordial gravity waves, we find that r similar to 10(-3) - 10(-2). An alternative possibility where the adjoint scalar field S has the role of the intlaton is also discussed.
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