Tootfinder

An Efficient Network-aware Direct Search Method for Influence Maximization
Matteo Bergamaschi, Sara Venturini, Francesco Tudisco, Francesco Rinaldi
https://arxiv.org/abs/2508.12164

An Efficient Network-aware Direct Search Method for Influence Maximization
Influence Maximization (IM) is a pivotal concept in social network analysis, involving the identification of influential nodes within a network to maximize the number of influenced nodes, and has a wide variety of applications that range from viral marketing and information dissemination to public health campaigns. IM can be modeled as a combinatorial optimization problem with a black-box objective function, where the goal is to select $B$ seed nodes that maximize the expected influence spread.…

Circular dichroism in the photoelectron angular distribution of achiral molecules
Christian S. Kern, Xiaosheng Yang, Giovanni Zamborlini, Simone Mearini, Matteo Jugovac, Vitaliy Feyer, Umberto De Giovannini, Angel Rubio, Serguei Soubatch, Michael G. Ramsey, F. Stefan Tautz, Peter Puschnig
https://arxiv.org/abs/2507.12113

Circular dichroism in the photoelectron angular distribution of achiral molecules
Circular dichroism in the angular distribution (CDAD) is the effect that the angular intensity distribution of photoemitted electrons depends on the handedness of the incident circularly polarized light. A CDAD may arise from intrinsic material properties like chirality, spin-orbit interaction, or quantum-geometrical effects on the electronic structure. In addition, CDAD has also been reported for achiral organic molecules at the interface to metallic substrates. For this latter case, we invest…

The electron temperature distribution and the high ionization just behind the shock in the Cygnus Loop
Masahiro Ichihashi, Aya Bamba, Dai Tateishi, Kouichi Hagino, Satoru Katsuda, Hiroyuki Uchida, Hiromasa Suzuki, Ryo Yamazaki, Yutaka Ohira
https://arxiv.org/abs/2509.10346

The electron temperature distribution and the high ionization just behind the shock in the Cygnus Loop
The physical processes behind astrophysical collisionless shocks, such as thermal relaxation and ionization after shock passage, remain poorly understood. To investigate these processes, we analyze the northeastern region of the Cygnus Loop with XMM-Newton. The electron temperature is found to increase towards the interior of the remnant ranging from 0.15-0.19 keV energy range within a spatial scale of 6 arcmin (or 1.27 pc at a distance of 725 pc) from the shock front. This can be explained wel…

Hadron-Hadron Interactions from Lattice QCD: Theory meets Experiments
Tetsuo Hatsuda
https://arxiv.org/abs/2507.08359 https://arxiv.o…

Hadron-Hadron Interactions from Lattice QCD: Theory meets Experiments
We summarize recent developments in the study of hadron-hadron interactions using lattice QCD near the physical pion mass ($m_π \simeq 146$ MeV), based on the HAL QCD method and its connection to experimental data. In particular, we focus on several key interaction channels shown below. Also, we examine the two-pion exchange (TPE) mechanism, which governs the long-range behavior of interactions between flavor-singlet hadrons, as well as between nucleons and flavor-singlet hadrons.

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Impacts of Atmospheric Carbon Species and Stellar Type on Climates of Terrestrial Planets
Jared Landry, Hiroyuki Kurokawa, Tetsuo Taki, Yuka Fujii, Kosuke Aoki, Hidenori Genda
https://arxiv.org/abs/2508.05975

Impacts of Atmospheric Carbon Species and Stellar Type on Climates of Terrestrial Planets
The climates of terrestrial planets are largely determined by the composition of their atmospheres and spectral types of their host stars. Previous studies suggest a wide range of carbon species abundances (CO\textsubscript{2}, CO, and CH\textsubscript{4}) can result from variations in reducing fluxes and stellar spectral types which influence photochemistry. However, a systematic investigation of how varying carbon species, particularly CO, affect planetary climates across wide parameter space…

Signal processing and data acquisition system for the BTO detectors onboard COSI
Shunsaku Nagasawa, Tadayuki Takahashi, Kazuhiro Nakazawa, Hannah Gulick, Claire Chen, Hiroki Yoneda, Keigo Okuma, Matt Dexter, Josh Forgione, Nihal Gulati, Andrew Ji, Kaylie Ching, Isabel Schmidtke, Sarah Jauregui, Eric Yang, Andreas Zoglauer, Juan Carlos Martinez Oliveros, John Tomsick

Signal processing and data acquisition system for the BTO detectors onboard COSI
The energy range from a few hundred keV to a few MeV includes important probes such as nuclear gamma-rays and the 511 keV annihilation line. However, compared to X-rays and GeV/TeV gamma-rays, this range suffers from lower sensitivity by orders of magnitude. The upcoming NASA SMEX satellite mission Compton Spectrometer and Imager (COSI), scheduled for launch in 2027, is expected to break through this limitation with its Compton telescope utilizing a germanium semiconductor detector, covering th…

Magnetic field of a ring-like shape molecular cloud
Dana Alina, Adel Umirbayeva, Yasuo Doi, Soichiro Jo, Yue Hu, Alex Lazarian, Janik Karoly, Tie Liu, Koji S. Kawabata, Alua Mukhash, Danial Zhumagayir, Tomori Hori, Tetsuharu Maruta, Ryo Imazawa, Tatsuya Nakaoka, Mahito Sasada
https://arxiv.org/abs/2507.19281

Magnetic field of a ring-like shape molecular cloud
We present a detailed study of the magnetic field structure in the G111 molecular cloud, a ring-like filamentary cloud within the NGC 7538 region. We utilized interstellar dust polarization from the Planck telescope to trace large-scale field orientations, starlight extinction polarization from the Kanata telescope to probe the cloud's magnetic field after foreground subtraction, and velocity gradients derived from CO isotopologues, observed with the IRAP 30m telescope, to examine dense regions…

Detecting Sterile Neutrino Dark Matter at MeV Gamma-Ray Observatories
Subaru Fujisawa, Tatsuya Hayashi, Shigeki Matsumoto, Yuki Watanabe
https://arxiv.org/abs/2508.08695 https:/…

Detecting Sterile Neutrino Dark Matter at MeV Gamma-Ray Observatories
We explore the indirect detection of sterile neutrino dark matter within the gauged $U(1)_{B-L}$ extension of the Standard Model, in which three right-handed neutrinos account for neutrino masses, the baryon asymmetry, and dark matter. Focusing on the MeV mass range, we investigate two decay channels: the radiative decay $N \to νγ$, which produces a monochromatic photon, and the three-body decay $N \to e^- e^+ ν$, which leads to a 511 keV photon signal from positronium decay. Taking the upco…

Absence of higher than 6-fold coordination in glassy $GeO_{2}$ up to 158 GPa revealed by X-ray absorption spectroscopy
Jo\~ao Elias F. S. Rodrigues, Angelika D. Rosa, Emin Mijit, Tetsuo Irifune, Gaston Garbarino, Olivier Mathon, Raffaella Torchio, Max Wilke
https://arxiv.org/abs/2507.04076…

Absence of higher than 6-fold coordination in glassy $GeO_{2}$ up to 158 GPa revealed by X-ray absorption spectroscopy
Simple binary oxide glasses can exhibit a compression behavior distinct from that of their crystalline counterparts. In this study, we employed high-pressure X-ray absorption spectroscopy coupled to the diamond anvil cell to investigate in detail local structural changes around Ge in glassy $GeO_{2}$ up to 158 GPa. We conducted four independent runs, both with and without pressure-transmitting media. Up to 30 GPa, we observed no significant influence of the pressure medium on the pressure depen…