Tootfinder

Replaced article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- Precision Measurement of the Saturation Intensity in Rubidium at 420 nm
Shivam Sinha, Sumit Achar, Sankar Satheesh, Arijit Sharma

A Splitting Architecture for Exact Reduced Coulomb Friction
Hongcheng Song, Ye Fan, Uri M. Ascher, Dinesh K. Pai
https://arxiv.org/abs/2607.19599 https://arxiv.org/pdf/2607.19599 https://arxiv.org/html/2607.19599
arXiv:2607.19599v1 Announce Type: new
Abstract: Existing approaches to frictional contact dynamics typically either modify the Coulomb law to improve numerical robustness or solve the exact law in a fully coupled monolithic form. However, in its reduced form, exact Coulomb friction can be written as a cone complementarity problem with an augmented velocity, which reveals a natural split between a cone-constrained linear response and a scalar non-associated coupling induced by tangential velocity. We exploit this structure in the solver design. Our method uses an outer iteration to update the non-associated coupling explicitly, and an inner solve for a strongly convex cone-constrained quadratic program. This separation also makes the inner solver modular, so different numerical schemes can be used without changing the outer iteration. We evaluate the method on rigid-body benchmarks with stick-slip transitions and frictional stacking, and show that it reproduces exact Coulomb complementarity without smoothing or relaxing the friction law.
toXiv_bot_toot

Wie houdt die idioot tegen?
https://arstechnica.com/space/2026/08/spacex-is-set-to-acquire-130000-acres-of-marshland-in-southern-louisiana/

From January 2026:
“Trump called me down to the Oval Office,” John Bolton, national security adviser in 2018, told the Guardian.
“He said a prominent businessman had just suggested the US buy Greenland.”
It was an extraordinary proposal. And it originated from a longtime friend of the president who would go on to acquire business interests in the Danish territory.
The businessman, Bolton learned, was Ronald Lauder.
Heir to a makeup fortune
– the global cosm…

How a billionaire with interests in Greenland encouraged Trump to acquire the territory
US president’s friend Ronald Lauder – who first proposed Arctic expansion – is now making deals in the island

Earlier this week, Speaker of the House Mike Johnson (R-Louisiana) indicated that he and other Republican lawmakers
were exploring ways to reinterpret the meaning of the 14th Amendment’s birthright citizenship clause,
following the Supreme Court ruling last month against Donald Trump’s attempt to do so through executive order.
In an appearance on Fox News on Sunday, Johnson cited the dissenting opinion from Justice Clarence Thomas,
who argued that the 14th Amendment o…

Mike Johnson, Donald Trump, Still “Looking at All Angles” to End Birthright Citizenship
A recent poll reveals around 7 in 10 Americans agree with the Supreme Court’s decision to uphold birthright citizenship.

Never a weekend slowdown in cybersecurity news, so check out today's Metacurity for the most critical infosec developments you might have missed since Friday, including
--Alibaba’s Qwen races past Meta, Google with 3 billion AI model downloads,
--AI agent exploits Snowflake flaw introduced by Copilot,
--US tells allies to pick sides in AI race with China,
--China pushes to reshape the world’s AI training data,
--China’s Zhipu claims AI edge over Anthropic in cyber test,
--Pentagon scrambles to keep pace with AI’s military risks,
--France holds crisis meeting over massive tax agency hack,
--Iran targets Israeli journalists with phishing attacks,
--Election officials blast CISA over lack of cyber support,
--AI deepfake scams surge in Australia,
--SafePal breach exposes data of nearly 40k customers,
--Bits of Gold breach exposes customer data,
--Hackers exploit Mac flaw to mine cryptocurrency,
--Seven arrested over $35m German bank hack,
--Hong Kong university probes ransomware breach claims,
--Fake GitHub site spreads Mac infostealer,
--US courts to disclose government spyware use,
--Sogang University breach exposes 180k people,
--DDoS attacks hammer secure messaging service Threema,
--Hackers hawk millions of records stolen from Azure tenants,
--London police expose emails of Al Fayed accusers,
--Microsoft kills Windows tool long abused by malware,
--French court blocks social media ban for children,
--AI can’t seem to produce any tech heroes,
--AI makes data breaches even more expensive,
--Amazon used to sell books, not destroy them
https://www.metacurity.com/alibabas-qwen-races-past-meta-google-with-3-billion-ai-model-downloads/

True to the promise of
“drill, baby, drill,”
leaders in Washington are doubling down on attacks
against Alaska’s wildlands
and the clean water, wildlife and ways of life they sustain.
Here’s how the administration is advancing drilling and mining attacks on public lands:
->> Opened every acre of the Arctic National Wildlife Refuge’s fragile coastal plain  to oil and gas leasing
->> Approved and reissued permits to move forward on the cont…

Homepage | The Wilderness Society
Our Mission: United people to protect our wild places. Our Work: Climate Solutions, Landscape Connectivity, Community Led Conservation Each day thousands of acres of wild places are lost to mining, drilling, logging and other development. But we don't have to give it all away. Together, we can save our wildest lands for future generations.

Precision Measurement of the Saturation Intensity in Rubidium at 420 nm
Shivam Sinha, Sumit Achar, Sateesh S., Arijit Sharma
https://arxiv.org/abs/2606.30871 https://