Modular Invariant Hilltop Inflation

Understand

In this paper we show that it is possible to achieve successful hilltop inflation in which the inflaton is identified as the modulus field in a modular invariant theory.

• The dilaton plays a crucial role in shaping the potential.
• Modular invariant gaugino condensation provides the mechanism for the modulus stabilisation after inflation.
• The inflationary trajectory lies on the lower boundary of the fundamental domain of the modulus field $\tau$.