Superfluid Effective Field Theory for Dark Matter Direct Detection

Abstract

We develop an effective field theory (EFT) framework for superfluid ${}^4$He to model the interactions among quasiparticles, helium atoms and probe particles. Our effective field theory approach brings together symmetry arguments and power-counting and matches to classical fluid dynamics. We then present the decay and scattering rates for the relevant processes involving quasiparticles and helium atoms. The presented EFT framework and results can be used to understand the dynamics of thermalization in the superfluid, and can be further applied to sub-GeV dark matter direct detection with superfluid ${}^4$He.

arXiv comment29 pages, 9 figures, minor changes, references added

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Cited by in corpus (5)

• Dark matter direct detection from the single phonon to the nuclear recoil regime
• Optomechanical dark matter instrument for direct detection
• Optimal anti-ferromagnets for light dark matter detection
• Signatures and Detection Prospects for sub-GeV Dark Matter with Superfluid Helium
• Hunting axion dark matter with anti-ferromagnets: a case study with nickel oxide