80 citations · 172 across the 6 of their papers we have counts for
6 papers
Chern numbers in quantum graphs
Or Swartzberg, Omri Gat, Boris Gutkin
Quantum graphs provide an analytically tractable setting for the study of Chern numbers and band degeneracies in periodic systems. We study the Chern numbers of energy bands in a t…
Phase-coherent repetition rate multiplication of a mode-locked laser from 40 MHz to 1 GHz by injection locking
D. Kielpinski, O. Gat
We have used injection locking to multiply the repetition rate of a passively mode-locked femtosecond fiber laser from 40 MHz to 1 GHz while preserving optical phase coherence betw…
A frictionless microswimmer
Alexander M. Leshansky, Oded Kenneth, Omri Gat +1
We investigate the self-locomotion of an elongated microswimmer by virtue of the unidirectional tangential surface treadmilling. We show that the propulsion could be almost frictio…
Optimal rotations of deformable bodies and orbits in magnetic fields
J. E. Avron, O. Gat, O. Kenneth +1
Deformations can induce rotation with zero angular momentum where dissipation is a natural ``cost function''. This gives rise to an optimization problem of finding the most effecti…
Magnetic Fingerprints of Fractal Spectra and Duality of Hofstadter Models
O. Gat, J. E. Avron
We study the de-Haas van Alphen oscillations in the magnetization of the Hofstadter model. Near a split band the magnetization is a rapidly oscillating function of the Fermi energy…
Anomalous Scaling in a Model of Passive Scalar Advection: Exact Results
A. Fairhall, O. Gat, V. S. L'vov +1
Kraichnan's model of passive scalar advection in which the driving velocity field has fast temporal decorrelation is studied as a case model for understanding the appearance of ano…