Tootfinder

Mova Viax: Smarte Kleingarten-Mähbots ab 600 Euro und 250 Quadratmeter
Mova zeigt auf der CES günstige Mähbots, die mit Lasersensorik und Kameras kleine Rasenflächen systematisch statt chaotisch kürzen.

Neues zur #Vulkangruppe. Wusste wieder keiner!

Langer Leidensweg - Meterweise Spenderhaut für Opfer von Crans-Montana #News #Nachrichten

Nuclear spin quenching of the $^2S_{1/2}\rightarrow {^2}F_{7/2} $ electric octupole transition in $^{173}$Yb$^ $
Jialiang Yu, Anand Prakash, Clara Zyskind, Ikbal A. Biswas, Rattakorn Kaewuam, Piyaphat Phoonthong, Tanja E. Mehlst\"aubler
https://arxiv.org/abs/2512.05872 https://arxiv.org/pdf/2512.05872 https://arxiv.org/html/2512.05872
arXiv:2512.05872v1 Announce Type: new
Abstract: We report the coherent excitation of the highly forbidden $^2S_{1/2} \rightarrow {^2}F_{7/2}$ clock transition in the odd isotope $^{173}\mathrm{Yb}^ $ with nuclear spin $I = 5/2$, and reveal the hyperfine-state-dependent, nuclear spin induced quenching of this transition. The inferred lifetime of the $F_e = 4$ hyperfine state is one order of magnitude shorter than the unperturbed ${^2}F_{7/2}$ clock state of $^{171}\mathrm{Yb}^ $. This reduced lifetime lowers the required optical power for coherent excitation of the clock transition, thereby reducing the AC Stark shift caused by the clock laser. Using a 3-ion Coulomb crystal, we experimentally demonstrate an approximately 20-fold suppression of the AC Stark shift, a critical improvement for the scalability of future multi-ion $\mathrm{Yb}^ $ clocks. Furthermore, we report the $|^2S_{1/2},F_g=3\rangle~\rightarrow~|^2F_{7/2},F_e=6\rangle$ unquenched reference transition frequency as $642.11917656354(43)$ THz, along with the measured hyperfine splitting and calculated quadratic Zeeman sensitivities of the ${^2}F_{7/2}$ clock state. Our results pave the way toward multi-ion optical clocks and quantum computers based on $^{173}\mathrm{Yb}^ $.
toXiv_bot_toot

"Red lines" as justification for terrorizing civilians – Russia's new tactic #shorts: https://benborges.xyz/2025/11/30/quotred-linesquot-as-justification-for.html<…

Economist Justin Wolfers: “Demolishing the East Wing of the WH before finalizing plans for what will be built above its ruins is a near-perfect metaphor for Trump’s approach to economic policy.
The only difference is the wrecking crew doesn’t claim the rubble is evidence of unprecedented growth.”

This Weekend in Politics, Bulletin 260. 11/30/25
… Ukraine’s peace negotiators met with the US delegation today, which was led by Sec of State Marco Rubio, special envoy Steve Witkoff, and Trump son-in-law Jared Kushner. After multiple recent revelations about Witkoff being owned by Putin, he looked pretty uncomfortable facing the Ukrainians he has worked so hard to sell out.

(€) In #Tübingen liefert ein neuer #Solarthermie-Park seit Oktober klimafreundliche #Fernwärme.
Die Anlage mit 23.000 Quadratmetern

Salzseifen, Sandstein-Edition
#Soapmaking

Crosslisted article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- A quadratic-scaling algorithm with guaranteed convergence for quantum coupled-channel calculations
Hubert J. J\'o\'zwiak, Md Muktadir Rahman, Timur V. Tscherbul

DJI Osmo Action 6: Actionkamera mit variabler Blende
Die Actioncam DJI Osmo Action 6 kommt mit einem 1/1,1-Zoll-Quadratsensor, der hohe Bildqualität verspricht. Die Blende lässt sich von f/2,0 – f/4,0 variieren.
https:/…