Tootfinder

Efficiently learning depth-3 circuits via quantum agnostic boosting
Srinivasan Arunachalam, Arkopal Dutt, Alexandru Gheorghiu, Michael de Oliveira
https://arxiv.org/abs/2509.14461

Efficiently learning depth-3 circuits via quantum agnostic boosting
We initiate the study of quantum agnostic learning of phase states with respect to a function class $\mathsf{C}\subseteq \{c:\{0,1\}^n\rightarrow \{0,1\}\}$: given copies of an unknown $n$-qubit state $|ψ\rangle$ which has fidelity $\textsf{opt}$ with a phase state $|ϕ_c\rangle=\frac{1}{\sqrt{2^n}}\sum_{x\in \{0,1\}^n}(-1)^{c(x)}|x\rangle$ for some $c\in \mathsf{C}$, output $|ϕ\rangle$ which has fidelity $|\langle ϕ| ψ\rangle|^2 \geq \textsf{opt}-\varepsi…

A relaxation scheme for the equations of isentropic gas dynamics on a network with jump transmission conditions
Magali Ribot (IDP, MaIAGE, MUSCA), Roberto Natalini (IAC), Maya Briani (IAC)
https://arxiv.org/abs/2507.05779

A relaxation scheme for the equations of isentropic gas dynamics on a network with jump transmission conditions
In this paper we propose a new numerical scheme of relaxation type to approximate the Euler equations of isentropic gas dynamics on the arcs of a network. At the junction mass conservation and a jump transmission condition on the density are given, and a new solver is introduced to deal with both subsonic and supersonic cases. Consistency properties of the solver are proven and numerical tests are displayed to show its good performance also with respect to other possible solvers.

Nucleon charge radius measurement with low-energy electron scattering
Clement Legris, Rika Danjo, Taiga Goke, Yuki Honda, Kengo Hotta, Rin Kagami, Hiroki Kobayashi, Michael Kohl, Yukie Maeda, Dominique Marchand, Edward Morris, Toshiya Muto, Tetsuya Ohnishi, Shunto Sasaki, Toshimi Suda, Kyo Tsukada, Eric Voutier, Toyohiro Yamauchi, Kosei Yoshimoto
https://

Nucleon charge radius measurement with low-energy electron scattering
The charge radius is one of the most basic characteristics of the nucleons. The proton charge radius is especially of great importance for many applications such as the structure studies of the atomic nuclei, the determination of the Rydberg constant and QED tests. Its determination is thus a hot topic in several physics communities due to inconsistent results using electron scattering, atomic and muonic hydrogen spectroscopy. A new measurement of the proton and deuteron charge radii with low e…