Tootfinder

A remark on the $t$-intersecting Erd\H{o}s-Ko-Rado theorem
William Linz
https://arxiv.org/abs/2507.11285 https://arxiv.org/pdf/2507.1…

A remark on the $t$-intersecting Erdős-Ko-Rado theorem
The $t$-intersecting Erdős-Ko-Rado theorem is the following statement: if $\mathcal{F} \subset \binom{[n]}{k}$ is a $t$-intersecting family of sets and $n\ge (t+1)(k-t+1)$, then $|\mathcal{F}| \le \binom{n-t}{k-t}$. The first proof of this statement for all $t$ was a linear algebraic argument of Wilson. Earlier, Schrijver had proven the $t$-intersecting Erdős-Ko-Rado theorem for sufficiently large $n$ by a seemingly different linear algebraic argument motivated by Delsarte theory. I…

Directly observing relativistic Bohmian mechanics
Yun-Fei Wang, Hui Wang, Tong Zhang, Yi-Teng Ye, Xiao-Yu Wang, Chao-Yang Lu, Jian-Wei Pan
https://arxiv.org/abs/2509.11609 https…

Directly observing relativistic Bohmian mechanics
Bohmian mechanics, also referred to as the de Broglie-Bohm pilot-wave theory, represents a deterministic and nonlocal interpretation of quantum mechanics. Since its origination in 1927, despite many attempts, reconciling it with relativistic theory and verification of its relativistic effects have remained elusive. Here, we report a direct observation of relativistic characteristics of Bohmian mechanics. We reconstruct the relativistic Bohmian trajectories of single photons utilizing weak measu…

A high fraction of close massive binary stars at low metallicity
H. Sana, T. Shenar, J. Bodensteiner, N. Britavskiy, N. Langer, D. J. Lennon, L. Mahy, I. Mandel, S. E. de Mink, L. R. Patrick, J. I. Villasenor, M. Dirickx, M. Abdul-Masih, L. A. Almeida, F. Backs, S. R. Berlanas, M. Bernini-Peron, D. M. Bowman, V. A. Bronner, P. A. Crowther, K. Deshmukh, C. J. Evans, M. Fabry, M. Gieles, A. Gilkis, G. Gonzalez-Tora, G. Grafener, Y. Gotberg, C. Hawcroft, V. Henault-Brunet, A. Herrero, G. …

A high fraction of close massive binary stars at low metallicity
At high metallicity, a majority of massive stars have at least one close stellar companion. The evolution of such binaries is subject to strong interaction processes, heavily impacting the characteristics of their life-ending supernova and compact remnants. For the low-metallicity environments of high-redshift galaxies constraints on the multiplicity properties of massive stars over the separation range leading to binary interaction are crucially missing. Here we show that the presence of massi…

Letter of Intent: 100m Atom Interferometer Experiment at CERN
Charles Baynham, Andrea Bertoldi, Diego Blas, Oliver Buchmueller, Sergio Calatroni, Vassilis Charmandaris, Maria Luisa Chiofalo, Pierre Clad\'e, Jonathon Coleman, Fabio Di Pumpo, John Ellis, Naceur Gaaloul, Sa\"ida Guellati-Khelifa, Tiffany Harte, Richard Hobson, Michael Holynski, Samuel Lellouch, Lucas Lombriser, Elias Lopez Asamar, Michele Maggiore, Christopher McCabe, Jeremiah Mitchell, Ernst M. Rasel, Federico S…

Letter of Intent: 100m Atom Interferometer Experiment at CERN
We propose an O(100)m Atom Interferometer (AI) experiment to be installed against a wall of the PX46 access shaft to the LHC. This experiment would probe unexplored ranges of the possible couplings of bosonic ultralight dark matter (ULDM) to atomic constituents and undertake a pioneering search for gravitational waves (GWs) at frequencies intermediate between those to which existing and planned experiments are sensitive, among other fundamental physics studies. A conceptual feasibility study sh…

Pointwise convergence to initial data of heat and Poisson equations in Modulation Spaces
Divyang G. Bhimani, Rupak K. Dalai
https://arxiv.org/abs/2507.13220

Pointwise convergence to initial data of heat and Poisson equations in Modulation Spaces
We characterize weighted modulation spaces (data space) for which the heat semigroup $e^{-tL}f$ converges pointwise to the initial data $f$ as time $t$ tends to zero. Here $L$ stands for the standard Laplacian $-Δ$ or Hermite operator $H=-Δ+|x|^2$ on the whole domain. Similar result also holds for Poisson semigroup $e^{-t\sqrt{L}}f.$ We also prove that the Hardy-Littlewood maximal operator operates on certain modulation spaces. This may be of independent interest.

ByteDance launches Seedream 4.0, an AI image model it claims can beat Google's viral "nano banana" model in prompt adherence, alignment, and aesthetics (Vincent Chow/South China Morning Post)
https://www.scmp.com/tech/big-tech/article…

ByteDance unveils new AI image model to rival Google DeepMind’s ‘Nano Banana’
ByteDance claims that Seedream 4.0 beat Gemini 2.5 Flash Image for image generation and editing on its internal evaluation benchmark.

Critical Reflections on Overcoming a Challenge for Bohmian Mechanics by H. Nikolic and the Experimental Findings of Sharoglazova et al
Miko{\l}aj Sienicki, Krzysztof Sienicki
https://arxiv.org/abs/2507.10989

Critical Reflections on Overcoming a Challenge for Bohmian Mechanics by H. Nikolic and the Experimental Findings of Sharoglazova et al
This paper offers a brief reflection on H. Nikolic's response to the experimental findings of Sharoglazova et al., which challenge Bohmian mechanics. While Nikolic's revision satisfies the continuity equation, it reintroduces assumptions he seeks to avoid and overlooks key empirical and nonlocal aspects of the system. These issues underscore unresolved tensions in applying Bohmian mechanics to complex, interacting regimes.

Reducing Temperature Swing and Rectifying Radiative Heat Transfer for Passive Dynamic Space Thermal Control with Variable-Emittance Coatings
Liping Wang, Neal Boman, Sydney Taylor, Chloe Stoops
https://arxiv.org/abs/2509.13794

Reducing Temperature Swing and Rectifying Radiative Heat Transfer for Passive Dynamic Space Thermal Control with Variable-Emittance Coatings
Dynamic radiative thermal control is crucial for normal operation and energy saving of spacecraft that copes with changing thermal environment involving heat dissipation to cold deep space, external heating from the Sun and nearby planet, and internal heating from onboard electronics. Variable-emittance coatings, whose infrared emittance can be tuned passively by temperature or actively by external stimuli, could provide a viable solution. In this work, we experimentally demonstrate self-adapti…

Simultaneous visible spectrophotometry of interstellar object 3I/ATLAS with Seimei/TriCCS
Jin Beniyama
https://arxiv.org/abs/2508.08829 https://arxiv.org/p…

Simultaneous visible spectrophotometry of interstellar object 3I/ATLAS with Seimei/TriCCS
3I/ATLAS, also known as C/2025 N$_1$ (ATLAS), is the third interstellar object (ISO) discovered in July 2025. ISOs are particularly interesting because characterizing their physical properties helps us understand and test our knowledge of Solar System formation. Several quick response observations of 3I/ATLAS were performed during the first few days after the discovery, and various results, such as reflectance spectra, have been reported. We performed simultaneous visible spectrophotometry of 3…

Fault-tolerant mixed boundary punctures on the toric code
Yao Shen, Fu-Lin Zhang
https://arxiv.org/abs/2508.11230 https://arxiv.org/pdf/2508.11230

Fault-tolerant mixed boundary punctures on the toric code
Defects on the toric code, a well-known exactly solvable Abelian anyon model, can exhibit non-Abelian statistical properties, which can be classified into punctures and twists. Benhemou et al.[Phys. Rev. A. 105, 042417 (2022)] introduced a mixed boundary puncture model that integrates the advantages of both punctures and twists. They proposed that non-Abelian properties could be realized in the symmetric subspace {$|++\rangle$, $|--\rangle$}. This work demonstrates that the nontrivial…