title: Sound of Dark Matter: Searching for Light Scalars with Resonant-Mass Detectors.
abstract: The fine-structure constant and the electron mass in string theory are determined by the values of scalar fields called moduli. If the dark matter takes on the form of such a light modulus, it oscillates with a frequency equal to its mass and an amplitude determined by the local dark-matter density. This translates into an oscillation of the size of a solid that can be observed by resonant-mass antennas. Existing and planned experiments, combined with a dedicated resonant-mass detector proposed in this Letter, can probe dark-matter moduli with frequencies between 1 kHz and 1 GHz, with much better sensitivity than searches for fifth forces.
authors: Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada.
authors: Asimina
authors: A
authors: Arvanitaki
authors: Stanford Institute for Theoretical Physics, Stanford University, Stanford, California 94305, USA.
authors: Savas
authors: S
authors: Dimopoulos
authors: Stanford Institute for Theoretical Physics, Stanford University, Stanford, California 94305, USA.
authors: Ken
authors: K
authors: Van Tilburg