Department of Physics

Indian Institute Of Technology Madras , Chennai

Duality on Two-dimensional Kuramoto Model

Speaker : MRINAL SARKAR

2017-10-05

Abstract :

The Kuramoto model, a well known mathematical model in non-linear dynamics, consists of a population of coupled phase oscillators. This model is used to describe synchronization. It has been recently studied that a classical Hamiltonian system with 2N state variables in its action-angle representation yields Kuramoto dynamics on N-dimensional invariant manifolds [1].There is a connection through the Hamiltonian between the locally coupled Kuramoto model in non-linear dynamics and the 2-D x-y model [5] of statistical mechanics .Using this Hamiltonian we perform a duality transformation (similar to x-y model) [3-4] on the partition function of the Kuramoto model to obtain its high temperature and low temperature expansion.

References:
[1] D. Witthaut and M. Timme, Kuramoto dynamics in Hamiltonian systems Physical Review E 90,032917(2014)
[2] V. Flovik, F. Macia, and E. Wahlstrom, Describing synchronization and topological excitations in array of magnetic spin torque oscillators through the Kuramoto model Scienti_c Reports 6:32528 (2016)
[3] N. Gupte and S. R. Shenoy. Physical interpretation of variables on the dual lattice. Physical Review B , Volume 31, Number 5 , 1 March 1985.
[4] R. Savit. Duality in _eld theory and statistical systems Rev. Mod. Phys. Vol.52, No. 2, Part I, April 1980
[5] Nigel Goldenfeld. Lectures on Phase Transition and The Renormalization Group. Advanced Book Program , 1992 , Massachusetts.

Key Speaker MRINAL SARKAR
Guests None
Place Conference Room
Start Time 3:00 PM
Finish Time 5:00 PM
External Link None