Vortex-mediated relaxation of magnon BEC into light Higgs quasiparticles

• Published in: arXiv.org
• Main Authors: Autti, S, Heikkinen, P J, Laine, S M, Mäkinen, J T, Thuneberg, E V, Zavjalov, V V, Eltsov, V B
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 02.02.2021
• Subjects: Bose-Einstein condensates; Conservation; Elementary excitations; Fermions; Fluids; Kelvin waves; Magnons; Momentum; Physics - Other Condensed Matter; Quantum theory; Superfluidity

A magnon Bose-Einstein condensate in superfluid \(^3\)He is a fine instrument for studying the surrounding macroscopic quantum system. At zero temperature, the BEC is subject to a few, distinct forms of decay into other collective excitations, owing to momentum and energy conservation in a quantum v...