Upcoming Webinar
We invite you to join a virtual meeting of the Action on:
Friday, November 28, at 14:15 CET
Seminar
Speaker: Ahmet Keleş, Middle East Technical University (ODTÜ)
Title: Vortex Matter and Quantum Hall States in Anisotropic Rotating Bose Gases.
Abstract: Rapidly rotating atomic Bose gases offer a highly tunable platform for exploring phenomena analogous to those in type-II superconductors and quantum Hall systems. Recent experimental progress has reignited interest in these systems, particularly in the pursuit of realizing fractional quantum Hall (FQH) states. In this talk, I will present a theoretical investigation of anisotropic rotating Bose gases projected onto the lowest Landau level (LLL). In the weakly interacting regime, I will demonstrate vortex lattice configurations obtained via imaginary-time evolution of the Gross–Pitaevskii equation. At stronger interactions, I will discuss a phase diagram that features both broken-symmetry vortex phases and topologically ordered FQH states, highlighting their distinctive edge excitations. The latter analysis is based on numerical studies employing exact diagonalization and density matrix renormalization group (DMRG) methods.
Bio: Dr. Ahmet Keleş is an Assistant Professor in the Department of Physics at Middle East Technical University (ODTÜ) in Ankara, Turkey. He received his undergraduate degree from Bilkent University and his Ph.D. from the University of Washington in Seattle. He subsequently held postdoctoral positions at George Mason University (Virginia) and the University of Pittsburgh (Pennsylvania). His research focuses on condensed matter theory, particularly quantum materials and ultracold atomic systems.
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We look forward to your participation on November 28.