https://doi.org/10.1140/epjc/s10052-022-11142-x
Regular Article - Theoretical Physics
Gravitational waves from no-scale supergravity
Department of Physics, Section of Nuclear and Particle Physics, National and Kapodistrian University of Athens, 15784, Athens, Greece
Received:
19
May
2022
Accepted:
18
December
2022
Published online:
4
January
2023
In this paper we study four concrete models, based on no-scale supergravity with SU(2,1)/SU(2) 
U(1) symmetry. We modify either the Kähler 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.
© The Author(s) 2023
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