Self-Similar Quasicrystals and Hyperbolic Honeycombs

PIRSA ID: 23010112
Série : Quantum Fields & String Seminars
Event Type: Seminar
Domaine(s) scientifique(s) :
Quantum Fields and Strings
Date de fin :
Speaker(s):
  • Justin Kulp, Stony Brook University
January 27, 2023 at 11:00 AM Skyroom

Most people are familiar with periodic tessellations and lattices; from the floor in the PI Bistro to their favourite spin systems. In this talk, I will discuss two less familiar families of tessellations and their applications to high energy physics, condensed matter physics, and mathematics: hyperbolic tessellations and quasicrystals. After introducing the basics of regular hyperbolic lattices, I will survey constructions and surprising properties of quasicrystals (like the Penrose tiling), including their classically forbidden symmetries, long-range order, and self-similar structure. Inspired by the AdS/CFT correspondence, I will describe a mathematical relationship between hyperbolic lattices in (D+1)-dimensions and quasicrystals in D-dimensions, as well as the resolution of a conjecture by Bill Thurston. Based on work to appear with Latham Boyle.

Zoom Link: https://pitp.zoom.us/j/91876287518?pwd=NGNLOXZHa1h1cmdnMzJxQzVMVFJJdz09