A quasi-analytical approach is developed for detecting period-doubling bifurcation emerging near a Hopf bifurcation point. The new algorithm employs higher-order Harmonic Balance Approximations (HBAs) to compute the monodromy ...

In this chapter, we will learn about axion inflation in field theory, how axions appear in string theory, and a specific set-up for string inflation that has been very popular recently, axion monodromy.

Given a nilpotent singular point of a planar vector field, its monodromy is associated with its Andreev number n. The parity of n determines whether the existence of an inverse integrating factor implies that the singular ...