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arXiv · 2205.05595

Gravitational Waves From No-Scale Supergravity

Vassilis C. Spanos·Ioanna D. Stamou
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Abstract

In this paper we study four concrete models, based on no-scale supergravity with SU(2,1)/SU(2)$\times$ U(1) symmetry. We modify either the K\"ahler potential or the superpotential, which are related to the no-scale theory with this symmetry. In this scenario, the induced Gravitational Waves, are calculated to be detectable by the future space-based observations such as LISA, BBO and DECIGO. The models under study are interrelated, as they all yield the Starobinsky effective-like scalar potential in the unmodified case. We evaluate numerically the scalar power spectrum and the stochastic background of the Gravitational Waves, satisfying the observational Planck cosmological constraints for inflation.

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Vassilis C. Spanos, Ioanna D. Stamou. 2022-05-11. Gravitational Waves From No-Scale Supergravity. https://doi.org/10.1140/epjc/s10052-022-11142-x

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