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Preliminary characterization of a surface electrode Paul trap for frequency metrology

Autor: Madunic, Josipa, Groult, Lucas, Achi, Bachir, Lauprêtre, Thomas, Boudrias, Alan, Roset, Pierre, Soumann, Valérie, Kersalé, Yann, Hafiz, Moustafa Abdel, Lacroûte, Clément

We are developing a single-ion optical clock based on a surface-electrode (SE) trap that we will operate with $^{171}$Yb$^+$ ions on the electric quadrupole transition at 435.5 nm. We present heating rate measurements performed with a prototype SE tr

Externí odkaz: http://arxiv.org/abs/2410.06639

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First search for dark photon dark matter with a MADMAX prototype

We report the first result from a dark photon dark matter search in the mass range from ${78.62}$ to $83.95~\mathrm{\mu eV}/c^2$ with a dielectric haloscope prototype for MADMAX (Magnetized Disc and Mirror Axion eXperiment). Putative dark photons wou

Externí odkaz: http://arxiv.org/abs/2408.02368

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First mechanical realization of a tunable dielectric haloscope for the MADMAX axion search experiment

MADMAX, a future experiment to search for axion dark matter, is based on a novel detection concept called the dielectric haloscope. It consists of a booster composed of several dielectric disks positioned with $\mu$m precision. A prototype composed o

Externí odkaz: http://arxiv.org/abs/2407.10716

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E(2)-Equivariant Features in Machine Learning for Morphological Classification of Radio Galaxies

Autor: Lines, Natalie E. P., Roset, Joan Font-Quer, Scaife, Anna M. M.

With the growth of data from new radio telescope facilities, machine-learning approaches to the morphological classification of radio galaxies are increasingly being utilised. However, while widely employed deep-learning models using convolutional ne

Externí odkaz: http://arxiv.org/abs/2406.09024

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The Gross--Kohnen--Zagier theorem via $p$-adic uniformization

Autor: Beneish, Lea, Darmon, Henri, Gehrmann, Lennart, Roset, Martí

This article gives a new proof of the Gross--Kohnen--Zagier theorem for Shimura curves which exploits the $p$-adic uniformization of Cerednik--Drinfeld. The explicit description of CM points via this uniformization leads to an expression relating the

Externí odkaz: http://arxiv.org/abs/2403.18688

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Dihedral long root A-packets of $p$-adic $G_2$ via theta correspondence

Autor: Alonso, Raúl, He, Qiao, Ray, Mishty, Roset, Martí

We construct local Arthur packets associated with a dihedral long root $A$-parameter of a split reductive group of type $G_2$ over a nonarchimedian local field of characteristic zero. The construction relies on an exceptional correspondence for the p

Externí odkaz: http://arxiv.org/abs/2308.05029

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