Abstract

A well-motivated class of dark matter candidates, including axions and dark photons, takes the form of coherent oscillations of a light bosonic field. If the dark matter couples to Standard Model states, it may be possible to detect it via absorptions in a laboratory target. Current experiments of this kind include cavity-based resonators that convert bosonic dark matter to electromagnetic fields, operating at microwave frequencies. We propose a new class of detectors at higher frequencies, from the infrared through the ultraviolet, based on the dielectric haloscope concept. In periodic photonic materials, bosonic dark matter can efficiently convert to detectable single photons. With feasible experimental techniques, these detectors can probe significant new parameter space for axion and dark photon dark matter in the 0.1-10 eV mass range.

Highlights

  • There is overwhelming evidence that the majority of the matter density of the universe takes some beyond-standardmodel form, referred to as dark matter (DM) [1,2]

  • Such cold bosonic dark matter acts as a coherent classical-like field, oscillating at a frequency set by its mass m and with an amplitude set by m and the dark matter density

  • We have outlined an experimental proposal for light bosonic dark matter searches in the ∼eV mass range

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Summary

INTRODUCTION

There is overwhelming evidence that the majority of the matter density of the universe takes some beyond-standardmodel form, referred to as dark matter (DM) [1,2]. A range of existing and proposed experiments aims to detect the absorption of light DM through different mechanisms (see [10,11,12] for reviews of axion and dark photon DM detection experiments) Many of these are not sensitive to DM masses far above the microwave frequency range. There are ranges of parameter space where simple early-universe production mechanisms can produce the correct DM abundance, with couplings below current constraints; in particular, purely gravitational production during inflation can result in a DM abundance of light bosons Such cold bosonic dark matter acts as a coherent classical-like field, oscillating at a frequency set by its mass m and with an amplitude set by m and the dark matter density.

MULTILAYER OPTICAL FILMS
Axion conversion in layered materials
Other configurations
DM velocity distribution
Dark photon conversion
Frequency-averaged power absorption
Tolerances
Chirped stacks
EXPERIMENTAL SETUP
Dielectric materials
Photon detection
Scanning
Environmental backgrounds
Blackbody
Cosmic rays and radioactivity
Sensitivity
OTHER DARK MATTER CANDIDATES
Scalar couplings
DARK MATTER PRODUCTION MECHANISMS
Findings
DISCUSSION
Full Text
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