Stimulated emission of dark matter axion from condensed matter excitations

Yokoi, Naoto; Saitoh, Eiji

doi:10.1007/jhep01(2018)022

Cited by 3 publications

(2 citation statements)

References 60 publications

(134 reference statements)

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“…We also reiterate that only λ k is a function of m a and A, and further that λ B can also be k dependent if the background varies with frequency. Moreover, we stress that all k modes need not be included in (39) in practice, but rather only the k modes corresponding to frequencies in the vicinity of m a .…”

Section: Experimental Sensitivitymentioning

confidence: 99%

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Revealing the dark matter halo with axion direct detection

2018

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The next generation of axion direct detection experiments may rule out or confirm axions as the dominant source of dark matter. We develop a general likelihood-based framework for studying the time-series data at such experiments, with a focus on the role of dark-matter astrophysics, to search for signatures of the QCD axion or axion like particles. We illustrate how in the event of a detection the likelihood framework may be used to extract measures of the local dark matter phase-space distribution, accounting for effects such as annual modulation and gravitational focusing, which is the perturbation to the dark matter phase-space distribution by the gravitational field of the Sun. Moreover, we show how potential dark matter substructure, such as cold dark matter streams or a thick dark disk, could impact the signal. For example, we find that when the bulk dark matter halo is detected at 5σ global significance, the unique time-dependent features imprinted by the dark matter component of the Sagittarius stream, even if only a few percent of the local dark matter density, may be detectable at ∼2σ significance. A co-rotating dark disk, with lag speed ∼50 km/s, that is ∼20% of the local DM density could dominate the signal, while colder but as-of-yet unknown substructure may be even more important. Our likelihood formalism, and the results derived with it, are generally applicable to any time-series based approach to axion direct detection.

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Section: Experimental Sensitivitymentioning

confidence: 99%

“…Our aim now is to determine how the discovery test statistic is distributed under these assumptions. Combining these assumptions with the form of Θ given in (39), and then choosing the A that maximizes this quantity, Background Signal+Bkg. Approximation Figure 12.…”

Section: Ts =mentioning

confidence: 99%

Revealing the dark matter halo with axion direct detection

2018

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Efficient organic impurities absorption with graphite-rich activated carbon for ultra-pure H2O2 purification

Wang,

Dang,

Wang

et al. 2024

Journal of Industrial and Engineering Chemistry

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Axion topology in photonic crystal domain walls

Devescovi,

Morales-Pérez,

Hwang

et al. 2024

Nat Commun

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Axion insulators are 3D magnetic topological insulators supporting hinge states and quantized magnetoelectric effects, recently proposed for detecting dark-matter axionic particles via their axionic excitations. Beyond theoretical interest, obtaining a photonic counterpart of axion insulators offers potential for advancing magnetically-tunable photonic devices and axion haloscopes based on axion-photon conversion. This work proposes an axionic 3D phase within a photonic setup. By building inversion-symmetric domain-walls in gyrotropic photonic crystals, we bind chiral modes on inversion-related hinges, ultimately leading to the realization of an axionic channel of light. These states propagate embedded in a 3D structure, thus protected from radiation in the continuum. Employing a small external gyromagnetic bias, we transition across different axionic mode configurations, enabling effective topological switching of chiral photonic fibers. While demonstrating the possibility of realizing axion photonic crystals within state-of-the-art gyrotropic setups, we propose a general scheme for rendering axion topology at domain walls of Weyl semimetals.

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Stimulated emission of dark matter axion from condensed matter excitations

Cited by 3 publications

References 60 publications

Revealing the dark matter halo with axion direct detection

Revealing the dark matter halo with axion direct detection

Efficient organic impurities absorption with graphite-rich activated carbon for ultra-pure H2O2 purification

Axion topology in photonic crystal domain walls

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