3 papers
hep-th2023
Compact Scalars at the Cosmological Collider
Priyesh Chakraborty, John Stout
We study the dynamics of scalar fields with compact field spaces, or axions, in de Sitter space. We argue that the field space topology can qualitatively affect the physics of thes…
hep-th2023
Light Scalars at the Cosmological Collider
Priyesh Chakraborty, John Stout
We study the self-energies of weakly interacting scalar fields in de Sitter space with one field much lighter than the Hubble scale. We argue that self-energies drastically simplif…
hep-th2023
Zero Modes of Massive Fermions Delocalize from Axion Strings
Hengameh Bagherian, Katherine Fraser, Samuel Homiller +1
Massless chiral excitations can arise from the interactions between a fermion and an axion string, propagating along the string and allowing it to superconduct. The properties of t…