Tootfinder

Reaching the Ultimate Quantum Precision Limit at Colliders: Conditions and Case Studies
Tengyu Ai, Qi Bi, Yuxin He, Jia Liu, Xiao-Ping Wang
https://arxiv.org/abs/2506.10673

Reaching the Ultimate Quantum Precision Limit at Colliders: Conditions and Case Studies
We investigate whether collider experiments can reach the quantum limit of precision, defined by the quantum Fisher information (QFI), using only classical observables such as particle momenta. As a case study, we focus on the $τ^+τ^-$ system and the decay channel $τ\to πν$, which offers maximal spin-analyzing power and renders the decay a projective measurement. We develop a general framework to determine when collider measurements can, in principle, saturate the QFI in an entangled bipar…

Apparent inconsistency between Streda formula and Hall conductivity in reentrant integer quantum anomalous Hall effect in twisted MoTe$_2$
Yi Huang, Seth Musser, Jihang Zhu, Yang-Zhi Chou, Sankar Das Sarma
https://arxiv.org/abs/2506.10965

Apparent inconsistency between Streda formula and Hall conductivity in reentrant integer quantum anomalous Hall effect in twisted MoTe$_2$
Recent experiments in twisted bilayer MoTe$_2$ (tMoTe$_2$) have uncovered a rich landscape of correlated phases. In this work, we investigate the reentrant integer quantum anomalous Hall (RIQAH) states reported in F. Xu, et. al., arXiv:2504.06972 which displays a notable mismatch between the Hall conductivity measured via transport and that inferred from the Streda formula. We argue that this discrepancy can be explained if the RIQAH state is a quantum Hall bubble phase, analogous to similar we…

Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
Puneet Pareek, Peter Sollich, Saroj Kumar Nandi, Ludovic Berthier
https://arxiv.org/abs/2506.09589

Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
Understanding the influence of activity on dense amorphous assemblies is crucial for biological processes such as wound healing, embryogenesis, or cancer progression. Here, we study the effect of self-propulsion forces of amplitude $f_0$ and persistence time $τ_p$ in dense assemblies of soft repulsive particles, a model system that interpolates between particulate active matter and biological tissues. We identify the fluid and glass phases of the three-dimensional phase diagram obtained by var…

Photometric Stereo using Gaussian Splatting and inverse rendering
Mat\'eo Ducastel (GREYC), David Tschumperl\'e, Yvain Qu\'eau
https://arxiv.org/abs/2507.06684

Photometric Stereo using Gaussian Splatting and inverse rendering
Recent state-of-the-art algorithms in photometric stereo rely on neural networks and operate either through prior learning or inverse rendering optimization. Here, we revisit the problem of calibrated photometric stereo by leveraging recent advances in 3D inverse rendering using the Gaussian Splatting formalism. This allows us to parameterize the 3D scene to be reconstructed and optimize it in a more interpretable manner. Our approach incorporates a simplified model for light representation and…

Combating Reentrancy Bugs on Sharded Blockchains
Roman Kashitsyn, Robin K\"unzler, Ognjen Mari\'c, Lara Schmid
https://arxiv.org/abs/2506.05932 ht…

Combating Reentrancy Bugs on Sharded Blockchains
Reentrancy is a well-known source of smart contract bugs on Ethereum, leading e.g. to double-spending vulnerabilities in DeFi applications. But less is known about this problem in other blockchains, which can have significantly different execution models. Sharded blockchains in particular generally use an asynchronous messaging model that differs substantially from the synchronous and transactional model of Ethereum. We study the features of this model and its effect on reentrancy bugs on three…

Can knowledge reclassification accelerate technological innovation?
Peter Persoon
https://arxiv.org/abs/2506.08656 https://arxiv.org/…

Can knowledge reclassification accelerate technological innovation?
Technological knowledge evolves not only through the generation of new ideas, but also through the reinterpretation of existing ones. Reinterpretations lead to changes in the classification of knowledge, that is, reclassification. This study investigates how reclassified inventions can serve as renewed sources of innovation, thereby accelerating technological progress. Drawing on patent data as a proxy for technological knowledge, I discuss two empirical patterns: (i) more recent patents are mo…

"as dense urban neighborhoods grow more costly, lower- and moderate-income renters, the very people most likely to ride the bus, are pushed out and replaced by a more affluent set who, on the whole, tend to favor getting around by car."
This finding should temper expectations that building lots of market-rate, i.e., expensive, housing will automagically bring about some kind of transit renaissance.

Toward All 2D-based Printed Raindrop Triboelectric Nanogenerators
Foad Ghasemi, Jonas Heirich, Dimitri Sharikow, Sebastian Klenk, Jonathan N. Coleman, Georg S. Duesberg, Claudia Backes
https://arxiv.org/abs/2507.07504

Toward All 2D-based Printed Raindrop Triboelectric Nanogenerators
The raindrop triboelectric nanogenerator (RD-TENG) is an emerging technology that is designed to harvest energy from raindrops. This application requires materials with negative triboelectric effect, high surface charge density, mechanical flexibility, and a large surface area, which are key characteristics of 2D materials. However, fundamental research is necessary to understand the potential of 2D materials in this context. This study introduces all-2D-based RD-TENG devices using graphene and…

Quantum pions
M. Fabbrichesi, R. Floreanini, E. Gabrielli, L. Marzola
https://arxiv.org/abs/2506.05464 https://arxiv.org/pdf/2506.054…

Quantum pions
We show that two- and three-pion states produced in the decay of neutral kaons are contextual, entangled, and Bell nonlocal in isospin space. By reinterpreting the experimental values of the different isospin amplitudes, we can determine the amount of entanglement enjoyed by these states and the extent to which they violate the non-contextuality and Bell locality inequalities. Notably, the three-pion state offers a genuine multipartite test of Bell nonlocality with qutrits.

Transfer Learning and Explainable AI for Brain Tumor Classification: A Study Using MRI Data from Bangladesh
Shuvashis Sarker
https://arxiv.org/abs/2506.07228

Transfer Learning and Explainable AI for Brain Tumor Classification: A Study Using MRI Data from Bangladesh
Brain tumors, regardless of being benign or malignant, pose considerable health risks, with malignant tumors being more perilous due to their swift and uncontrolled proliferation, resulting in malignancy. Timely identification is crucial for enhancing patient outcomes, particularly in nations such as Bangladesh, where healthcare infrastructure is constrained. Manual MRI analysis is arduous and susceptible to inaccuracies, rendering it inefficient for prompt diagnosis. This research sought to ta…