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### CMSA Condensed Matter/Math Seminar: Coupled layers, p-string condensate, and exactly solvable fracton models

CMSA EVENTS

June 4, 2020      10:30 am
Speaker: Sheng-Jie Huang - University of Maryland

In this talk, I will introduce a class of gapped fracton models, dubbed “cage-net fracton models”.  I will first review the coupled layer construction for exactly solvable fracton models. This construction leads to...

### Slices of Thurston’s Master Teapot

INFORMAL GEOMETRY AND DYNAMICS

June 3, 2020      4:00 pm
Speaker: Kathryn Lindsey - Boston College

Thurston's Master Teapot is the closure of the set of all points $(z,\lambda) \in \mathbb{C} \times \mathbb{R}$ such that $\lambda$ is the growth rate of a critically periodic unimodal self-map of...

### CMSA Quantum Matter/Quantum Field Theory Seminar: Magnetic Black Holes

CMSA EVENTS

June 3, 2020      10:30 am
Speaker: Juan Maldacena - IAS

We discuss properties of magnetically charged black holes in the Standard Model. We will discuss how the electroweak symmetry is restored around the black hole. In addition, the Hawking evaporation...

### CMSA Geometry Seminar: Equivariant Floer theory and SYZ mirror symmetry

CMSA EVENTS

June 2, 2020      9:30 am
Speaker: Siu-Cheong Lau - Boston University

In this talk, we will first review a symplectic realization of the SYZ program and some of its applications. Then I will explain some recent works on equivariant Lagrangian Floer...

### Kitaev’s finite group model as an error correcting code

MATHEMATICAL PICTURE LANGUAGE

June 2, 2020      10:00 am
Speaker: Shawn Cui - Perdue University

Kitaev's quantum double models in 2D provide some of the most commonly studied examples of topological quantum order.  In particular, the ground space is thought to yield a quantum error-correcting...

### CMSA Condensed Matter/Math Seminar: Supermetal from a high-order Van Hove singularity

CMSA EVENTS

May 28, 2020      10:30 am
Speaker: Hiroki Isobe - MIT

A Van Hove singularity (VHS) of the density of states (DOS) is universal in a periodic system.  In two dimensions, a saddle point of energy dispersion yields a logarithmic divergence...

### CMSA Quantum Matter/Quantum Field Theory Seminar: Non-Abelian fractons from gauged layers

CMSA EVENTS

May 27, 2020      1:30 pm
Speaker: Dom Williamson - Stanford University

I will describe a construction of gapped 3D lattice models with non-Abelian fractons from gauging subsystem symmetries of topological layers. I will describe how this relates to previously constructed fracton models with...

### From Archimedes to Quantum Supremacy

MATHEMATICAL PICTURE LANGUAGE

May 26, 2020      10:00 am
Speaker: Scott Aaronson - University of Texas at Austin

I'll tell a mathematical story that runs from Archimedes' hat-box theorem of ~200BC (which he used to calculate the surface area of the sphere), to the properties of "Porter-Thomas" probability distributions,...

### Math Science Literature Lecture Series

CMSA EVENTS

May 22, 2020      2:00 pm
Speaker: Bong Lian - Brandeis University

Please register here to attend any of the lectures. Title: From string theory and Moonshine to vertex algebras Abstract: This is a brief survey of the early historical development of vertex...