B-field induced mixing between Langmuir waves and axions

Visinelli, Luca; Terças, Hugo

doi:10.48550/arxiv.1807.06828

Cited by 8 publications

(8 citation statements)

References 94 publications

(107 reference statements)

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“…In this Letter we consider the coupling of the axion to bulk plasmons, rather than photons. The resonant mixing of axions with plasmons was first noted in [24][25][26], but it was generally ignored until recently [27][28][29]. Concurrent with this work the idea of plasma-shining-throughwall has been introduced [30].…”

Section: Introductionmentioning

confidence: 99%

Tunable Axion Plasma Haloscopes

et al. 2019

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We propose a new strategy to search for dark matter axions using tunable cryogenic plasmas. Unlike current experiments, which repair the mismatch between axion and photon masses by breaking translational invariance (cavity and dielectric haloscopes), a plasma haloscope enables resonant conversion by matching the axion mass to a plasma frequency. A key advantage is that the plasma frequency is unrelated to the physical size of the device, allowing large conversion volumes. We identify wire metamaterials as a promising candidate plasma, wherein the plasma frequency can be tuned by varying the interwire spacing. For realistic experimental sizes we estimate competitive sensitivity for axion masses 35 − 400 µeV, at least.

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Section: Introductionmentioning

confidence: 99%

Tunable Axion Plasma Haloscopes

et al. 2019

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“…Unfortunately, the axion's coupling to SM particles is expected to be extremely small and therefore challenging to probe. The majority of searches rely upon modifications to Maxwell's equations due to the axionphoton coupling g aγγ [9][10][11][12][13][14][15][16]. This has inspired a number of terrestrial direct search strategies [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Stellar disruption of axion miniclusters in the Milky Way

et al. 2021

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Axion miniclusters are dense bound structures of dark matter axions that are predicted to form in the postinflationary Peccei-Quinn symmetry breaking scenario. Although dense, miniclusters can easily be perturbed or even become unbound by interactions with baryonic objects such as stars. Here, we characterize the spatial distribution and properties of miniclusters in the Milky Way (MW) today after undergoing these stellar interactions throughout their lifetime. We do this by performing a suite of Monte Carlo simulations which track the miniclusters' structure and, in particular, accounts for partial disruption and mass loss through successive interactions. We consider two density profiles-Navarro-Frenk-White (NFW) and power-law (PL)-for the individual miniclusters in order to bracket the uncertainties on the minicluster population today due to their uncertain formation history. For our fiducial analysis at the solar position, we find a survival probability of 99% for miniclusters with PL profiles and 46% for those with NFW profiles. Our work extends previous estimates of this local survival probability to the entire MW. We find that towards the Galactic Center, the survival probabilities drop drastically. Although we present results for a particular initial halo mass function, our simulations can be easily recast to different models using the provided data and code (github.com/bradkav/axion-miniclusters). Finally, we comment on the impact of our results on lensing, direct, and indirect detection.

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“…Unfortunately, the axion's coupling to SM particles is expected to be extremely small and therefore challenging to probe. The majority of searches rely upon modifications to Maxwell's equations due to the axion-photon coupling g aγγ [9][10][11][12][13][14][15][16]. This has inspired a number of terrestrial direct search strategies [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Stellar Disruption of Axion Miniclusters in the Milky Way

Kavanagh,

Edwards,

Visinelli

et al. 2020

Preprint

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Axion miniclusters are dense bound structures of dark matter axions that are predicted to form in the post-inflationary Peccei-Quinn symmetry breaking scenario. Although dense, miniclusters can easily be perturbed or even become unbound by interactions with baryonic objects such as stars. Here, we characterize the spatial distribution and properties of miniclusters in the Milky Way (MW) today after undergoing these stellar interactions throughout their lifetime. We do this by performing a suite of Monte Carlo simulations which track the miniclusters' structure and, in particular, accounts for partial disruption and mass loss through successive interactions. We consider two density profiles -Navarro-Frenk-White (NFW) and Power-law (PL) -for the individual miniclusters in order to bracket the uncertainties on the minicluster population today due to their uncertain formation history. For our fiducial analysis at the Solar position, we find a survival probability of 99% for miniclusters with PL profiles and 46% for those with NFW profiles. Our work extends previous estimates of this local survival probability to the entire MW. We find that towards the Galactic center, the survival probabilities drop drastically. Although we present results for a particular initial halo mass function, our simulations can be easily recast to different models using the provided data and code (github.com/bradkav/axion-miniclusters). Finally, we comment on the impact of our results on lensing, direct, and indirect detection.

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B-field induced mixing between Langmuir waves and axions

Cited by 8 publications

References 94 publications

Tunable Axion Plasma Haloscopes

Tunable Axion Plasma Haloscopes

Stellar disruption of axion miniclusters in the Milky Way

Stellar Disruption of Axion Miniclusters in the Milky Way

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