Non-quantum ergodicity in KAM systems

Date & time

1–2pm 7 April 2017

Location

John Dedman Building 27 Room G35 (seminar room)

Speakers

Sean Gomes (MSI/ANU)

Event series

Contacts

 Robert Culling

The celebrated quantum ergodicity theorem of Shnirelman, Zelditch, and Colin de Verdière established that ergodic dynamical assumptions on a Hamiltonian system are manifested in eigenfunction equidistribution results for the corresponding quantised system. This result has led to questions of converse QE. Can Hamiltonian systems with non-ergodic dynamics exhibit the same eigenfunction equidistribution? In this talk I will present my recent work on establishing the non-quantum ergodicity of a class of KAM Hamiltonian systems. A key ingredient is the use of a construction of highly accurate quasimodes due to Popov. This project is the culmination of my doctoral research under the supervision of Professor Andrew Hassell.

(This is a repeat of Tuesday talk, as Sean's official thesis defence.)

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