Event DetailsEvent Dates: Thursday, September 21, 2017 - 10:30amSeminar Location: Duane Physics Room G126Speaker Name(s): Abhinav PremSpeaker Affiliation(s): University of Colorado, Boulder Seminar Type/SubjectScientific Seminar Type: CTQM SeminarEvent Details & Abstract: Fractons are a new type of emergent particles which are immobile in isolation, but can move together in dipolar pairs or other small clusters. These exotic excitations naturally occur in certain quantum phases of matter described by tensor gauge theories. While previous research has focused on the properties of small number of fractons, in this talk I will discuss systems with a finite density of either fractons or their dipolar bound states. I will describe some of the phases in which emergent U(1) fracton matter can exist, focusing in particular on systems with a finite density of mobile dipoles. In three-dimensions these fermionic dipoles will form a Fermi surface and enter a Fermi liquid phase, which exhibits a finite temperature phase transition. I will also argue that two-dimensional chiral fracton models correspond to analogues of integer quantum Hall states and discuss some of their properties.