Tootfinder

Impact of the history force on the motion of droplets in shaken liquids
Frederik Gareis, Walter Zimmermann
https://arxiv.org/abs/2506.20838 https://…

Impact of the history force on the motion of droplets in shaken liquids
Droplets and solid particles in unsteady flows are affected by the Basset-Boussinesq history force (BBH), in addition to stationary viscous friction, inertia, and gravity. The BBH is often neglected, not because this is generally justified, but because its inclusion in calculations is usually difficult. To assess the significance of BBH for particle dynamics, we revisit unsteady Stokes flows around spherical particles or droplets and derive from first-principles the analytical expressions for t…

Fresh from intimidating ABC and CBS with meritless lawsuits,
Donald Trumpis suing Rupert Murdoch and the Wall Street Journal reporters who broke the story of a lewd birthday message for Jeffrey Epstein.
But, unlike with the frivolous allegations against the big broadcasters,
there’s clearly a fact of the matter here:
an authentic letter either exists or it does not;
-- and there is plenty to be revealed in the process of finding out.
Trump’s time-proven …

Holy crap. I still haven't deployed my upgraded personal blog. I have a bunch of posts that I've withheld for months now because I was going to push it to production 'any day now'... but Drupal 11's got a remarkably convoluted tool chain, especially with regard to theming. So I've still got one or two pesky things to sort... then I will make it live. This has gone on long enough. I need to put a fork in it. It's (so close to) done. Stop procrastinating Dave!

EdgeDoc: Hybrid CNN-Transformer Model for Accurate Forgery Detection and Localization in ID Documents
Anjith George, Sebastien Marcel
https://arxiv.org/abs/2508.16284 https://…

EdgeDoc: Hybrid CNN-Transformer Model for Accurate Forgery Detection and Localization in ID Documents
The widespread availability of tools for manipulating images and documents has made it increasingly easy to forge digital documents, posing a serious threat to Know Your Customer (KYC) processes and remote onboarding systems. Detecting such forgeries is essential to preserving the integrity and security of these services. In this work, we present EdgeDoc, a novel approach for the detection and localization of document forgeries. Our architecture combines a lightweight convolutional transformer …

A $Z_4$ Scotogenic Model with Higgs Portal
Noel Jonathan Jobu, Kenji Nishiwaki
https://arxiv.org/abs/2508.18713 https://arxiv.org/pdf/2508.18713

A $Z_4$ Scotogenic Model with Higgs Portal
We propose a new Scotogenic type model based on a global $Z_4$ symmetry involving dark matter candidates. After the symmetry breaking as $Z_4$ to $Z_2$ via the singlet scalar vacuum expectation value (VEV), the lightest Majorana fermion works as a viable thermal freeze-out dark matter (DM) candidate, and the mass terms for active neutrinos are generated as a finite quantum correction at the 1-loop level. A key point of realising our Scotogenic structure is to introduce two types of Majorana fer…

We see cops going crazy.
There will be lawsuits.
Cops and the places that hire them will incur legal costs and even higher payouts for damages.
This is likely to force cities to raise taxes to cover those costs or, more likely, to cover the massive increase in insurance premiums that cities will have to pay in the future.
Of course, ultimately it will be you and me - taxpayers - who foot these bills for the insane excesses of cops.

Probing the Scotogenic Dirac Model with FIMP Dark Matter and $\Delta N_{\rm eff}$
Shu-Yuan Guo, Man-Yu Zhao
https://arxiv.org/abs/2508.16362 https://arxiv.…

Probing the Scotogenic Dirac Model with FIMP Dark Matter and $ΔN_{\rm eff}$
We study a feebly interacting massive particle realization of the Scotogenic Dirac Model in which the lightest neutral fermion $N_1$ serves as a dark matter candidate, produced via the freeze-in or super-WIMP mechanism. The model generates Dirac neutrino masses at one loop, resulting in a rank-2 mass matrix that predicts one nearly massless neutrino. We analyze the DM relic density for various next-to-lightest odd particles (NLOPs), finding that coannihilation effects and enhanced annihilation …

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生活诸多路径 🚶🚶‍♀️🚶‍♂️
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🎞️FOMAPAN Action 400
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Magnetic Burial in Millisecond Magnetars and Late GRB Afterglow Signatures
Nissim Fraija, Cristian Giovanni Bernal, Antonio Galv\'an, Boris Betancourt-Kamenetskaia, Maria Giovanna Dainotti
https://arxiv.org/abs/2506.09402

Magnetic Burial in Millisecond Magnetars and Late GRB Afterglow Signatures
Millisecond magnetars, one of the potential candidates for the central engine of Gamma-ray bursts (GRBs), can experience significant magnetic field enhancement shortly after their formation. In some cases, this evolution is further influenced by the accretion of stellar debris, which modifies the dipole magnetic field strength. During a hypercritical accretion phase that lasts seconds or longer after the progenitor explosion, a thin crust may form, submerging the magnetic field (the so-called m…