Tootfinder

Pull-back and push-forward functors for holonomic modules over Cherednik algebras
Gwyn Bellamy, Pavel Etingof, Daniel Thompson
https://arxiv.org/abs/2402.18210

Pull-back and push-forward functors for holonomic modules over Cherednik algebras
In this article we continue the study of holonomic modules over sheaves of Cherednik algebras, initiated by the third author in [Tho18]. Working with arbitrary parameters, we first develop a theory of $b$-functions to prove that push-forward along open embeddings preserves holonomicity. This implies that pull-back along closed embeddings also preserves holonomicity. We use these facts to show that both push-forward and pull-back under any melys morphism preserves holonomicity. Since duality pre…

This https://arxiv.org/abs/2009.11431 has been replaced.
link: https://scholar.google.com/scholar?q=a

On the Betti Numbers of Finite Volume Hyperbolic Manifolds
We obtain strong upper bounds for the Betti numbers of compact complex-hyperbolic manifolds. We use the unitary holonomy to improve the results given by the most direct application of the techniques of [DS17]. We also provide effective upper bounds for Betti numbers of compact quaternionic- and Cayley-hyperbolic manifolds in most degrees. More importantly, we extend our techniques to complete finite volume real- and complex-hyperbolic manifolds. In this setting, we develop new monotonicity ineq…

FarView: An In-Situ Manufactured Lunar Far Side Radio Array Concept for 21-cm Dark Ages Cosmology
Ronald S. Polidan, Jack O. Burns, Alex Ignatiev, Alex Hegedus, Jonathan Pober, Nivedita Mahesh, Tzu-Ching Chang, Gregg Hallinan, Yuhong Ning, Judd Bowman
https://arxiv.org/abs/2404.03840

FarView: An In-Situ Manufactured Lunar Far Side Radio Array Concept for 21-cm Dark Ages Cosmology
FarView is an early-stage concept for a large, low-frequency radio observatory, manufactured in-situ on the lunar far side using metals extracted from the lunar regolith. It consists of 100,000 dipole antennas in compact subarrays distributed over a large area but with empty space between subarrays in a core-halo structure. FarView covers a total area of ~200 km2, has a dense core within the inner ~36 km2, and a ~power-law falloff of antenna density out to ~14 km from the center. With this desi…

Tip van mijn nerdige scheurkalender die ik met plezier met jullie deel; ze hebben helemaal gelijk, het is een mooi geschreven, zeer leesbaar boek.
Een foto van de vertaling die je moet hebben gaat hierbij. Door Ludo Hellemans, uit 2000. Die is nog steeds in de handel, ook als ebook

On the topology and combinatorics of decomposable arrangements
Alexander I. Suciu
https://arxiv.org/abs/2404.04784 https://arxiv.org/…

On the topology and combinatorics of decomposable arrangements
A complex hyperplane arrangement $\mathcal{A}$ is said to be decomposable if there are no elements in the degree 3 part of its holonomy Lie algebra besides those coming from the rank 2 flats. When this purely combinatorial condition is satisfied, it is known that the associated graded Lie algebra of the arrangement group $G$ decomposes (in degrees greater than 1) as a direct product of free Lie algebras. It follows that the $I$-adic completion of the Alexander invariant $B(G)$ also decomposes a…

"Dokumenttiohjaaja Virpi Suutarille metsä on aina ollut rakas. Lapsuusmuistot vievät metsään, mutta dokumentin aiheeksi metsä päätyi, kun Suutari alkoi pohtia omistamansa metsän avohakkuuta ja kohtaloa."
#metsäteollisuus #metsä

Uutispodcast
Ylen Uutispodcast tarjoaa syväsukelluksen yhteen uutisaiheeseen kerrallaan. Juontajina Marleena Pelli ja Erkka Mikkonen, haastateltavina asiansa tuntevia vieraita. Uutispodcast syventyy siihen, mikä on tärkeää juuri nyt. Uusi jakso joka arkipäivä klo 16. Palautetta ja juttuvinkkejä voi lähettää sähköpostitse uutispodcast@yle.fi. Äänisuunnittelu: Sami Lindfors ja Leo Kosola Toimittaja-tuottaja: Jaana Kangas Tuottaja: Helmiina Suhonen Vastaava tuottaja: Olli Seuri

The New Horizons Extended Mission Target: Arrokoth Search and Discovery
Marc W. Buie, John R. Spencer, Simon B. Porter, Susan D. Benecchi, Alex H. Parker, S. Alan Stern, Michael Belton, Richard P. Binzel, David Borncamp, Francesca DeMeo, S. Fabbro, Cesar Fuentes, Hisanori Furusawa, Tetsuharu Fuse, Pamela L. Gay, Stephen Gwyn, Matthew J. Holman, H. Karoji, J. J. Kavelaars, Daisuke Kinoshita, Satoshi Miyazaki, Matt Mountain, Keith S. Noll, David J. Osip, Jean-Marc Petit, Neill I. Reid, S…

The New Horizons Extended Mission Target: Arrokoth Search and Discovery
Following the Pluto fly-by of the New Horizons spacecraft, the mission provided a unique opportunity to explore the Kuiper Belt in-situ. The possibility existed to fly-by a Kuiper Belt object (KBO) as well as to observe additional objects at distances closer than are feasible from earth-orbit facilities. However, at the time of launch no KBOs were known about that were accessible by the spacecraft. In this paper we present the results of 10 years of observations and three uniquely dedicated eff…

Observation of Nonlinear Response and Onsager Regression in a Photon Bose-Einstein Condensate
Alexander Sazhin, Vladimir N. Gladilin, Andris Erglis, G\"oran Hellmann, Frank Vewinger, Martin Weitz, Michiel Wouters, Julian Schmitt
https://arxiv.org/abs/2403.04705

Observation of Nonlinear Response and Onsager Regression in a Photon Bose-Einstein Condensate
The quantum regression theorem states that the correlations of a system at two different times are governed by the same equations of motion as the temporal response of the average values. Such a relation provides a powerful framework for the investigation of physical systems by establishing a formal connection between intrinsic microscopic behaviour and a macroscopic 'effect' due to an external 'cause'. Measuring the response to a controlled perturbation in this way allows to determine, for exa…

This https://arxiv.org/abs/2401.09766 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Realization of controlled Remote implementation of operation
Controlled remote implementation of operation (CRIO) enables to implement operations on a remote state with strong security. We transmit implementations by entangling qubits in photon-cavity-atom system. The photons transferring in fibre and the atoms embedded in optical cavity construct CZ gates. The gates transfer implementations between participants with the permission of controller. We also construct nonadiabatic holonomic controlled gate between alkali metal atoms. Decoherence and dissipat…

Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G)
S. Agarwal, J. A. Aguilar, S. Ali, P. Allison, M. Betts, D. Besson, A. Bishop, O. Botner, S. Bouma, S. Buitink, M. Cataldo, B. A. Clark, A. Coleman, K. Couberly, S. de Kockere, K. D. de Vries, C. Deaconu, M. A. DuVernois, C. Glaser, T. Gl\"usenkamp, A. Hallgren, S. Hallmann, J. C. Hanson, B. Hendricks, J. Henrichs, N. Heyer, C. Hornhuber, K. Hughes, T. Karg, A. Karle, J. L. Kelley, M. Korntheuer, M. Kow…

Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G)
The science program of the Radio Neutrino Observatory-Greenland (RNO-G) extends beyond particle astrophysics to include radioglaciology and, as we show herein, solar physics, as well. Impulsive solar flare observations not only permit direct measurements of light curves, spectral content, and polarization on time scales significantly shorter than most extant dedicated solar observatories, but also offer an extremely useful above-surface calibration source, with pointing precision of order tens …