On Inflation and de Sitter in Non-Geometric String Backgrounds

Understand

We study the problem of obtaining de Sitter and inflationary vacua from dimensional reduction of double field theory (DFT) on nongeometric string backgrounds.

• In this context, we consider a new class of effective potentials that admit Minkowski and de Sitter minima.
• We then construct a simple model of chaotic inflation arising from T-fold backgrounds and we discuss the possibility of trans-Planckian field range from nongeometric monodromies as well as the conditions required to get slow roll.