$F$-term Multi-Field Inflation in Supergravity without Stabiliser Superfields

Jinn-Ouk Gong, Sergei V. Ketov, Takahiro Terada

Realising $F$-term slow-roll inflation in supergravity is non-trivial due to the well-known $\eta$-problem. The common strategy to solve the problem is to impose a shift symmetry on t…