Tootfinder

A General Approach to the Shape Transition of Run-and-Tumble Particles: The 1D PDMP Framework for Invariant Measure Regularity
Leo Hahn
https://arxiv.org/abs/2506.02274

A General Approach to the Shape Transition of Run-and-Tumble Particles: The 1D PDMP Framework for Invariant Measure Regularity
Run-and-tumble particles (RTPs) have emerged as a paradigmatic example for studying nonequilibrium phenomena in statistical mechanics. The invariant measure of a wide class of RTPs subjected to a potential possesses a density, which is continuous when tumble rates are high and discontinuous when they are low. This key feature is known as shape transition. By comparison with the Boltzmann distribution characteristic of thermodynamic equilibrium, this constitutes a qualitative indicator of the re…

I heard about a "Toy Library" which sounds cool! I mean, I run a Free Little Art Gallery and I always love a Little Free Library (of books), but get this...
"Cunillera runs it like a business. Families pay up to $65 per month, and there are scholarships."
Fuck That. It's not a "Library" it's a toy subscription service.
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This https://arxiv.org/abs/2504.05372 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The slowest spinning Galactic-field spider PSR J1932+2121: A history of inefficient mass transfer
The Five-hundred-meter Aperture Spherical Telescope is discovering hundreds of new pulsars, including a slowly spinning compact binary millisecond pulsar (spin period $P_{\rm spin}=14.2$\,ms) which showed radio eclipses and evidence of ablation of its companion: PSR J1932+2121. Its orbital period is $P_{\rm orb}=0.08$\,d and the minimum companion mass is estimated as 0.12\,\Msun. Hence, this pulsar is classified as part of the Galactic-field spider (redback) population. However, it spins almost…

Am 21. Mai 2025 gedachten bis zu 70 Radfahrende in #Osnabrück beim weltweiten #RideofSilence verletzter und getöteter Radfahrender.
Die teils autofreie Strecke zeigte: Straßen müssen allen gehören. Es braucht mehr Rücksicht, bessere Infrastruktur und klare