Journal article

Multiphonon excitations from dark matter scattering in crystals

Brian Campbell-Deem, Peter Cox, Simon Knapen, Tongyan Lin, Tom Melia



For direct detection of sub-MeV dark matter, a promising strategy is to search for individual phonon excitations in a crystal. We perform an analytic calculation of the rate for light dark matter (keV

University of Melbourne Researchers


Awarded by National Science Foundation

Awarded by DOE

Awarded by Department of Energy (DOE) Grant

Awarded by JSPS KAKENHI Grants

Funding Acknowledgements

We thank Christian Bauer, Angelo Esposito, Marat Freytsis, Sinead Griffin, Katherine Inzani, Aneesh Manohar, Harikrishnan Ramani, Nicholas Llewellyn Rodd, Tanner Trickle, James Wells, Zhengkang Zhang, and Kathryn Zurek for helpful discussions, and Angelo Esposito for comments on a draft version of the manuscript. S. K. and T. L. thank the Munich Institute for Astro-and Particle Physics (MIAPP) of the DFG Excellence Cluster ORIGINS and the Galileo Galilei Institute for Theoretical Physics for their hospitality, and the INFN for partial support during the completion of this work. S. K. also thanks the Aspen Center for Physics, supported by National Science Foundation Grant No. PHY-1607611. S. K. is supported by DOE Grant No. DE-SC0009988 and the Paul Dirac fund at the Institute for Advanced Study. T. L. is supported by an Alfred P. Sloan Research Fellowship and Department of Energy (DOE) Grant No. DE-SC0019195. P. C. is supported by the Australian Research Council. T. M. is supported by JSPS KAKENHI Grants No. JP18K13533 and No. JP19H05810. P. C. and T. M. are supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan.