Light Higgs channel of the resonant decay of magnon condensate in superfluid He-3-B

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal
View/Open full text file from the Research portal
Date
2016-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
Series
NATURE COMMUNICATIONS, Volume 7
Abstract
In superfluids the order parameter, which describes spontaneous symmetry breaking, is an analogue of the Higgs field in the Standard Model of particle physics. Oscillations of the field amplitude are massive Higgs bosons, while oscillations of the orientation are massless Nambu-Goldstone bosons. The 125 GeV Higgs boson, discovered at Large Hadron Collider, is light compared with electroweak energy scale. Here, we show that such light Higgs exists in superfluid He-3-B, where one of three Nambu-Goldstone spin-wave modes acquires small mass due to the spin-orbit interaction. Other modes become optical and acoustic magnons. We observe parametric decay of Bose-Einstein condensate of optical magnons to light Higgs modes and decay of optical to acoustic magnons. Formation of a light Higgs from a Nambu-Goldstone mode observed in He-3-B opens a possibility that such scenario can be realized in other systems, where violation of some hidden symmetry is possible, including the Standard Model.
Description
Keywords
BALIAN-WERTHAMER STATE, SOUND-ATTENUATION PEAK, MODE, PROPAGATION, SYMMETRIES, PRECESSION, BOSONS, PHASE, FIELD, MASS
Other note
Citation
Zavyalov, V, Autti, S, Eltsov, V B, Heikkinen, P J & Volovik, G E 2016, ' Light Higgs channel of the resonant decay of magnon condensate in superfluid He-3-B ', Nature Communications, vol. 7, 10294 . https://doi.org/10.1038/ncomms10294