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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Vortex-mediated relaxation of magnon BEC into light Higgs quasiparticles
AU - Autti, Samuli
AU - Heikkinen, P. J.
AU - Laine, S. M.
AU - Makinen, J.T.
AU - Thuneberg, E.
AU - Zavyalov, Vladislav
AU - Eltsov, V. B.
PY - 2021/7/2
Y1 - 2021/7/2
N2 - A magnon Bose-Einstein condensate (BEC) in superfluid 3He 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 3He−B and lays the groundwork for building magnon-based quantum devices.
AB - A magnon Bose-Einstein condensate (BEC) in superfluid 3He 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 3He−B and lays the groundwork for building magnon-based quantum devices.
U2 - 10.1103/PhysRevResearch.3.L032002
DO - 10.1103/PhysRevResearch.3.L032002
M3 - Journal article
VL - 3
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 3
M1 - L032002
ER -