Non-Fermi liquid quantum critical points and IR divergencies

Abstract: The study of metallic Quantum Critical Points with dynamics falling beyond the Fermi Liquid paradigm is well-motivated by experimental observations in Strange Metals. Even from a purely theoretical point of view, the description of these systems by means of a fully consistent QFT stands as a challenging task. In this talk, we describe a particular Quantum Critical Point displaying Non-Fermi Liquid dynamics, arising by coupling a Fermi Surface to a gapless boson. We extend the description to finite temperatures by proposing a mechanism to resolve the singular behavior associated to static bosons, thus leading to a consistent characterization of the Quantum Critical Region. We also comment on the phenomenological implications of our results.

other condensed mattersoft condensed matterstatistical mechanicsstrongly correlated electronssuperconductivitygeneral relativity and quantum cosmologyHEP - theorymathematical physicschaotic dynamicsfluid dynamicsquantum physics

Audience: researchers in the topic

Kadanoff seminars