BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Elasticity and Response in Mechanical Topological Lattices - Tom L
 ubensky (University of Pennsylvania \; 5G Innovation Centre)
DTSTART:20190516T101000Z
DTEND:20190516T105000Z
UID:TALK124564@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Ball-and-Spring lattices that have a perfect balance between t
 he number of degrees of freedom and the number of constraining springs und
 er periodic boundary conditions have topologically protected zero-energy s
 urface modes and nonlinear elastic Guest-Hutchinson modes. This talk will 
 provide an overview of these modes in various model systems\, including on
 e whose excitation spectrum matches that of a quantum model on a honeycomb
  lattice introduced by Kitaev. It will also discuss bulk and surface excit
 ation in systems in which the number constraining springs exceeds the numb
 er of degrees of freedom.
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR