ITAMP Lunch Seminar
Speaker: Anushya Chandran, (Boston University)
Date: Thursday, December 7th
Time: 12:00-1:00 pm
Includes Pizza.
Title: Constraint-driven localization and thermalization
Abstract: At low energy, the dynamics of excitations of many physical systems are locally
constrained. Examples include frustrated anti-ferromagnets, quantum Hall liquids and
Rydberg atoms in the blockaded regime. In this talk, I will discuss the steady states of
such systems under their own quantum dynamics. I will first show that a constrained
Hilbert space admits a notion of locality and thus adapt the eigenstate thermalization
hypothesis (ETH) to this setting. I will then provide numerical evidence in favor of ETH
in pinned non-Abelian anyon chains. In the second half of the talk, I will turn to the
interplay of spatially random couplings and local constraints. We will find that
constraints stabilize localization at strong randomness in different regimes: remarkably,
even when the random couplings do not commute with the local constraints. I will discuss
the structure of the accompanying quasi-local integrals of motion, the nature of the
dynamical transitions and the consequences for near-term quench experiments in Rydberg
atomic chains that simulate constrained Ising dynamics.
Location: B-106 @ Center for Astrophysics (60 Garden Street)
Directions: After entering the lobby of the CfA, turn right to enter the hallway of the B
building. In the hallway, turn right again, B-106 will be at the end of the hallway on the
left side.
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