Stability Analysis of the Cosmological Dynamics of $O(D,D)$-complete Stringy Gravity

A. Savaş Arapoğlu, Sermet Çağan, Aybike Çatal-Özer

The massless fields in the universal NS-NS sector of string theory form $O(D,D)$ multiplets of Double Field Theory, which is a theory that provides a T-duality covariant formulati…