Abstract: In this talk, I will discuss the one-loop determinant around axion wormholes in de Sitter. I will begin by reviewing these solutions, and explain our strategy to compute the one-loop determinant around them.
I will then discuss general features of the one-loop spectrum, including the phase of the path integral around these solutions, and its interpretation for different values of the flux that stabilizes the wormhole.  

When the flux is small, the effect of the wormhole region is well approximated by a “leading” bilocal operator insertion in the sphere. The phase of these solutions then follows from an integral over positions of these two operators, and the original phase of the sphere.

 If time permits, I will also discuss an estimate for the EFT coefficient of this bilocal insertion, when the solution has an odd number of dimensions. Based on arXiv:2603.02335.