Vortex-mediated relaxation of magnon BEC into light Higgs quasiparticles
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-09
Department
Major/Subject
Mcode
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Language
en
Pages
6
Series
PHYSICAL REVIEW RESEARCH, Volume 3, issue 3
Abstract
A magnon Bose-Einstein condensate (BEC) in superfluid He-3 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 vacuum. We study the vortex-Higgs mechanism: The vortices relax the requirement for momentum conservation, allowing the optical magnons of the BEC to transform into light Higgs quasiparticles. This facilitates a direct measurement of the dimensions of the B-phase double-core vortex, providing experimental access to elusive phenomena, such as the Kelvin wave cascade and core-bound Majorana fermions. Our paper expands the spectrum of possible interactions between magnetic quasiparticles in He-3-B and lays the groundwork for building magnon-based quantum devices.Description
| openaire: EC/H2020/694248/EU//TOPVAC
Keywords
SUPERFLUID, VORTICES
Other note
Citation
Autti, S, Heikkinen, P J, Laine, S M, Makinen, J T, Thuneberg, E, Zavjalov, V V & Eltsov, V B 2021, ' Vortex-mediated relaxation of magnon BEC into light Higgs quasiparticles ', PHYSICAL REVIEW RESEARCH, vol. 3, no. 3, L032002 . https://doi.org/10.1103/PhysRevResearch.3.L032002
