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

Loading...
Thumbnail Image

Access rights

openAccess

URL

Journal Title

Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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