Regensburg 2025 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 31: Focus Session: Nonequilibrium Collective Behavior in Open Classical and Quantum Systems

DY 31.4: Vortrag

Donnerstag, 20. März 2025, 10:15–10:30, H37

Cooling dynamics of the 2D Kitaev honeycomb model coupled to phonons — •Arkadeep Mitra, Francesco Piazza, and Markus Heyl — Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg, Germany

The ground state of the Kitaev spin-1/2 model on a 2D honeycomb lattice hosts a quantum spin liquid (QSL) phase where excitations fractionalize into Majorana fermions. At high temperatures, however, it has recently been observed to enter a disorder-free localized phase, so that any experimental cooling of a Kitaev material has to cross this localized and associated phase transition. Motivated from this, we study theoretically the cooling dynamics upon coupling the Kitaev model to phonons. We envisage that signatures obtained from this dynamics could act as probes for QSL.

Keywords: spin liquids; locatization; open systems; non-equilibrium dynamics