2024 Theses Doctoral

Spontaneous breaking of Lorentz Symmetry as a bridge between High Energy and Condensed Matter Physics

Kourkoulou, Ioanna

This dissertation is a collection of works studying selected condensed matter systems from the high energy theory point of view. We use the effective field theories of systems that spontaneously break Lorentz symmetry in order to investigate a number of questions, puzzles, and their consequences, such as apparent superluminality, and scattering amplitude properties of a system with unstable asymptotic states. In the process, we highlight the interplay between condensed matter physics and high energy theory, with Lorentz invariance violation as a common denominator.