Today's #arXivsummary: https://arxiv.org/abs/2309.03946 by Du et. al. Authors introduce a "nonlinear Lifshitz photon theory"; an interacting theory of a U(1) gauge boson w/quadratic dispersion relation. Interaction terms in theory lead to the decay of the Lifshitz photon. #CondMat #arXiv_2309_03946