Elasticity and Response in Mechanical Topological Lattices
- đ¤ Speaker: Tom Lubensky (University of Pennsylvania ; 5G Innovation Centre)
- đ Date & Time: Thursday 16 May 2019, 11:10 - 11:50
- đ Venue: Seminar Room 1, Newton Institute
Abstract
Ball-and-Spring lattices that have a perfect balance between the number of degrees of freedom and the number of constraining springs under periodic boundary conditions have topologically protected zero-energy surface modes and nonlinear elastic Guest-Hutchinson modes. This talk will provide an overview of these modes in various model systems, including one whose excitation spectrum matches that of a quantum model on a honeycomb lattice introduced by Kitaev. It will also discuss bulk and surface excitation in systems in which the number constraining springs exceeds the number of degrees of freedom.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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Tom Lubensky (University of Pennsylvania ; 5G Innovation Centre)
Thursday 16 May 2019, 11:10-11:50