Tootfinder

NexLawn Master X: Mähroboter mit Greifarm kürzt Rasenkanten und pflückt Früchte
Auf der IFA 2025 zeigt die Dreame-Submarke NexLawn einen Mähroboter, an dessen ausfahrbarem Arm sich austauschbare Werkzeuge befestigen lassen.

Nucleon mass in covariant baryon chiral perturbation theory at leading two-loop order
Ze-Rui Liang, Han-Xue Chen, Feng-Kun Guo, Zhi-Hui Guo, De-Liang Yao
https://arxiv.org/abs/2508.02196

Nucleon mass in covariant baryon chiral perturbation theory at leading two-loop order
We calculate the nucleon mass within a manifestly relativistic formulation of baryon chiral perturbation theory (BChPT), extending the framework to leading two-loop order ($\mathcal{O}(p^5)$). By employing dimensional counting analysis and rigorously verifying the extended on-mass-shell scheme at this order, we obtain a complete chiral representation of the nucleon mass that preserves analyticity, respects proper power counting, and maintains renormalization-scale independence. The resulting ex…

#GiftLink 'The Chinese can’t believe their luck: that the U.S. president and his party have decided to engage in one of the greatest acts of strategic self-harm imaginable. They have passed a giant bill that deliberately undermines America’s ability to generate electricity through renewables — solar, battery and wind power in particular.'
Opinion | How Trump’s ‘Big, Beautiful Bill’ Will Make China Great Again - The New York Times
https://www.nytimes.com/2025/07/03/opinion/trump-bill-clean-energy-china.html?unlocked_article_code=1.UE8.vD6W.NJ7slHNHu3dO&smid=url-share

The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons
Heinz Clement
https://arxiv.org/abs/2507.01937 https://

The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons
In many reactions leading to excitations of the nucleon the Roper resonance $N^*(1440)$ can be sensed only by complex partial-wave analyses. In nucleon-nucleon collisions the isoscalar single-pion production as well as specific two-pion production channels present the Roper excitation free of competing resonance processes at a mass of 1370 MeV and a width of 150 MeV. A detailed analysis points to the formation of $N^*(1440)N$ dibaryonic systems during the nucleon-nucleon collision process simil…

Impacts of isolated nucleon-nucleon correlations in relativistic $^{16}$O $^{16}$O collisions
Qi Liu, Hadi Mehrabpour, Bing-Nan Lu
https://arxiv.org/abs/2509.00315 https://

Impacts of isolated nucleon-nucleon correlations in relativistic $^{16}$O+$^{16}$O collisions
Nucleon-nucleon interactions are fundamental to the nuclear forces operating within the nucleus and play a crucial role in shaping the initial conditions of relativistic ion collisions through two-nucleon correlations. In this paper, we introduce an innovative approach to explore these encoded nucleon-nucleon correlations within advanced \textit{ab-initio} models in the context of relativistic $^{16}O$ collisions. Our methodology successfully reproduces the structural properties of the nucleoni…

Gravitational form factors of the nucleon from the chiral effective model
Daisuke Fujii, Mamiya Kawaguchi, Mitsuru Tanaka
https://arxiv.org/abs/2508.02207 https://

Gravitational form factors of the nucleon from the chiral effective model
We investigate the confining pressure and associated global property, i.e, D-term, of the nucleon using the skyrmion approach formulated within scale-invariant chiral perturbation theory. In this framework, the nucleon is modeled as a skyrmion, and a scalar meson is introduced to incorporate the effects of the scale anomaly via low-energy theorems. The contributions from the current quark mass and gluonic dynamics to the scale anomaly are encoded through the pion and scalar meson masses, respec…

Das ist noch die einzige "alte" #Zucchini aus 2023 von der vorherigen Sorte. Die haben keine so helle Streifen, wie die neue Sorte. Ist abr egal.
Glücklicherweise kann man die #Früchte wochenlang lagern, sodass ein

Exactness of the normal-ordered two-body truncation of three-nucleon forces
Maxwell Rothman, Ben Johnson-Toth, Francesca Bonaiti, Gaute Hagen, Matthias Heinz, Thomas Papenbrock
https://arxiv.org/abs/2508.01507

Exactness of the normal-ordered two-body truncation of three-nucleon forces
Reference-state based many-body methods start from Hamiltonians that are normal-ordered with respect to the reference state. In low-energy nuclear physics applications normal-ordered Hamiltonians consisting of two- and three-nucleon forces are usually truncated at the two-body rank with residual three-nucleon operators being discarded. Benchmark computations have showed that this truncation is accurate, but we lack an understanding about why it works. We show that the normal-ordered two-body tr…

Strong CP Violation and large-$N_c$ spin-flavor symmetry
Thomas R. Richardson
https://arxiv.org/abs/2509.03613 https://arxiv.org/pdf/2509.03613

Strong CP Violation and large-$N_c$ spin-flavor symmetry
We revisit the contribution of the QCD $\bar θ$ term to the CP violating pion-nucleon couplings and the nucleon electric dipole moment in a combined large-$N_c$ and chiral perturbation theory framework. In particular, we approach this issue through the emergent spin-flavor symmetry of the baryon sector at large but finite $N_c$. We obtain good agreement with previous analyses for the pion-nucleon couplings and show that the large-$N_c$ framework indicates that tree-level contributions to the e…

Bayesian analysis of properties of nuclear matter with the FOPI experimental data
Guojun Wei, Manzi Nan, Pengcheng Li, Yongjia Wang, Qingfeng Li, Gaochan Yong, Fuhu Liu
https://arxiv.org/abs/2509.03406

Bayesian analysis of properties of nuclear matter with the FOPI experimental data
Based on the ultra-relativistic quantum molecular dynamics (UrQMD) transport model, combined with experimental data of directed flow, elliptic flow, and nuclear stopping power measured by FOPI in $\rm ^{197}Au+^{197}Au$ collisions at beam energies ($E_{lab}$) of 0.25 and 0.4 GeV/nucleon, the incompressibility of the nuclear equation of state $K_0$, the nucleon effective mass $m^*$, and the in-medium correction factor ($F$, with respect to free-space values) on the nucleon-nucleon elastic cross …