Precision observations by the Fermi-LAT telescope have uncovered a significant gamma-ray excess emanating from the Galactic Center. This result is particularly exciting, since its spectrum and morphology match predictions from annihilating dark matter. However, several reasonable astrophysical explanations also exist, including emission from a yet-undiscovered population of gamma-ray pulsars. In this talk, I will discuss the current state of Fermi-LAT … Read More

Abstract: I discuss a new proposal for nonperturbatively defining chiral gauge theories, something that has resisted previous attempts. The proposal is a well defined field theoretic framework that contains mirror fermions with very soft form factors, which allows them to decouple, as well as ordinary fermions with conventional couplings. The construction makes use of an extra dimension, which localizes chiral … Read More