Tootfinder

This https://arxiv.org/abs/2505.21611 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Disturbing news about the $d=2+ε$ expansion
The $O(N)$ Non-Linear Sigma Model (NLSM) in $d=2+ε$ has long been conjectured to describe the same conformal field theory (CFT) as the Wilson-Fisher (WF) $O(N)$ fixed point obtained from the $λ(ϕ^2)^2$ model in $d=4-ε$. In this work, we put this conjecture into question, building on the recent observation [Jones (2024)] that the NLSM CFT possesses a protected operator with dimension $N-1$, which is instead absent in the WF $O(N)$ CFT. For $N=3$, we investigate the possibility of lifting thi…

Nach Arnie-Durchsage - Jetzt stärkt nächster Star Wiener Öffis den Rücken #News #Nachrichten

Ich bin an dem Punkt, wo ich einfach gern eine halbwegs funktionierende freiheitlich-demokratische, rechtsstaatliche Regierung hätte. Wo diese mit meinen persönlichen Überzeugungen und Vorstellungen übereinstimmt, ist mir inzwischen (beinahe) egal.
(Kann ich die Bonner Republik nochmal sehen?)
#Merz

On the Dynamics of Weighted Composition Operators
Nilson C. Bernardes Jr., Antonio Bonilla, Jo\~ao V. A. Pinto
https://arxiv.org/abs/2506.04476 https://

On the Dynamics of Weighted Composition Operators
We study the properties of power-boundedness, Li-Yorke chaos, distributional chaos, absolutely Cesàro boundedness and mean Li-Yorke chaos for weighted composition operators on $L^p(μ)$ spaces and on $C_0(Ω)$ spaces. We illustrate the general results by presenting several applications to weighted shifts on the classical sequence spaces $c_0(\mathbb{N})$, $c_0(\mathbb{Z})$, $\ell^p(\mathbb{N})$ and $\ell^p(\mathbb{Z})$ ($1 \leq p < \infty$) and to weighted translation operators on the classica…

I've really been moved by Edward White's death and the tributes to him being written. His books have meant a lot to me as a gay man. I wrote a blog post with more links, many also shared on @…

Effective description of Nelson-Barr models and the theta parameter
Gustavo H. S. Alves, Celso C. Nishi
https://arxiv.org/abs/2506.03257 https://

Effective description of Nelson-Barr models and the theta parameter
Nelson-Barr theories solve the strong CP problem with CP spontaneously broken at Λ_{CP} and transmitted to the CP conserving version of the SM through vector-like quarks (VLQs). For an arbitrary number of CP breaking scalars and VLQs, we perform the full one-loop matching calculations at Λ_{CP} up to dimension five operators and the relevant matching calculations at the VLQ scale relevant to tracking the contributions to the parameter \barθ. In the EFT after the CP breaking scalars have been…

🇺🇦 #NowPlaying on KEXP's #JazzTheatre
Oliver Nelson:
🎵 Teenies Blues
#OliverNelson
https://loribellquartet.bandcamp.com/track/teenies-blues-oliver-nelson
https://open.spotify.com/track/10Duc9tIQoNwR439wZ9APR

The Impact of Cluster Mergers on Galaxy Properties
O\u{g}uzhan \c{C}ak{\i}r, Matt S. Owers, Lucas C. Kimmig, Paul Nulsen, Mina Pak, Gabriella Quattropani, Warrick J. Couch
https://arxiv.org/abs/2506.04799

The Impact of Cluster Mergers on Galaxy Properties
Being the most energetic events in the known universe, the impact of galaxy cluster mergers on the properties of the resident galaxies has yet to be well-understood. In this paper, we investigate the effects of merging environments on star formation in nearby clusters ($0.04

Polarized Neutrons at ISIS: Recent Developments And Highlights
Polly Mitchell, Holly I. Barnfield, Mark Devonport, Kirill Nemkovski, G{\o}ran J. Nilsen, Peter Galsworthy, Gavin B. G. Stenning
https://arxiv.org/abs/2506.05148

Polarized Neutrons at ISIS: Recent Developments And Highlights
We present two recent projects which aim to improve the performance of polarized neutron scattering experiments using hyperpolarized $^{3}He$ spin filters at ISIS. The first is the optimization of a new compact magnetostatic cavity ("Magic Box") to house the $^{3}He$ spin filters based on an existing design. With a length of only 380 mm, it provides a field gradient relaxation time for the $^{3}He$ cell of 421 h in ambient conditions. It also contains a radiofrequency coil for adiabatic fast pa…

RIP Edmund White. https://www.nytimes.com/2025/06/04/arts/edmund-white-dead.html