From the 1 of 11 linked papers with an AI index.
11 papers
Wading the String Bog: CMB Birefringence in the Swampland
Guido D'Amico, Nemanja Kaloper, Alexander Westphal
The paper investigates how observations of cosmic microwave background birefringence can serve as experimental tests of Swampland conjectures, highlighting constraints from the Wea…
Electromagnetic Couplings of Dark Domain Walls
Nemanja Kaloper
We extend Maxwell electrodynamics with a Chern--Simons coupling to a dark sector top form sourced by domain walls. Cosmic birefringence can arise from a distinct mechanism in which…
Localization of Chiral Electromagnetic Waves on Thick Axion Domain Walls
Nemanja Kaloper
We analyze Maxwell theory coupled to an axion domain wall as a spectral boundary value problem. We find that a finite-width axion domain wall generically supports a localized norma…
Chiral Electromagnetic Surface Waves on Chern-Simons Interfaces
Nemanja Kaloper
We show that Maxwell theory with a codimension- Chern-Simons interface supports chiral electromagnetic surface waves on the interface, even when the bulk theory on both sides is…
CMB Birefringence from Vacuum Interfaces
Nemanja Kaloper
Hints of cosmic microwave background polarization rotation ( rad) are commonly attributed to late-time dynamics of ultralight axions. We show that such ul…
A Quantal Theory of Restoration of Strong CP Symmetry
Nemanja Kaloper
We propose a mechanism for relaxing a gauge theory CP violating phase in discrete steps to very small values. The idea is that the CP violating phase includes the magnetic dual of…