Tootfinder

Primordial Power Spectrum and Bispectrum from Lattice Simulations of Axion-U(1) Inflation
Drew Jamieson, Angelo Caravano, Eiichiro Komatsu
https://arxiv.org/abs/2507.22285 https…

Primordial Power Spectrum and Bispectrum from Lattice Simulations of Axion-U(1) Inflation
We present primordial non-Gaussianity predictions from a new high-precision code for simulating axion-U(1) inflation on a discrete lattice. We measure the primordial scalar curvature power spectrum and bispectrum from our simulations, determining their dependence on both scale and axion-gauge coupling strength. Both the gauge-sourced power spectrum and the bispectrum exhibit a strong blue tilt due to our choice of an $α$-attractor inflaton potential. We provide fitting functions for the power …

SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization
B. Cordier, J. Y. Wei, N. R. Tanvir, S. D. Vergani, D. B. Malesani, J. P. U. Fynbo, A. de Ugarte Postigo, A. Saccardi, F. Daigne, J. -L. Atteia, O. Godet, D. Gotz, Y. L. Qiu, S. Schanne, L. P. Xin, B. Zhang, S. N. Zhang, A. J. Nayana, L. Piro, B. Schneider, A. J. Levan, A. L. Thakur, Z. P. Zhu, G. Corcoran, N. A. Rakotondrainibe, V. D'Elia, D. Turpin, J. F. Agui Fernandez, M. A. Aloy, J. An, M. Bai, S.…

SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization
Most long Gamma-ray bursts originate from a rare type of massive stellar explosion. Their afterglows, while rapidly fading, can be initially extremely luminous at optical/near-infrared wavelengths, making them detectable at large cosmological distances. Here we report the detection and observations of GRB 250314A by the SVOM satellite and the subsequent follow-up campaign with the near-infrared afterglow discovery and the spectroscopic measurements of its redshift z $\simeq$ 7.3 . This burst ha…

Some performances can be rewatched, this is a good example, Cult of Personality, Living Colour, live in Auburn, 1988. Unbelievably good. Also a fitting anthem in the Trump era.
https://youtu.be/cwwJkaT2PHM?si=wDU1gGhkf-U-ac_a

Comparison of diffuse correlation spectroscopy analytical models for cerebral blood flow measurements
Mingliang Pan, Quan Wang, Yuanzhe Zhang, David Day-Uei Li
https://arxiv.org/abs/2507.21853

Comparison of diffuse correlation spectroscopy analytical models for cerebral blood flow measurements
Multi-layer diffuse correlation spectroscopy (DCS) models have been developed to reduce the contamination of superficial signals in cerebral blood flow index (CBFi) measurements. However, a systematic comparison of these models and clear guidance on model selection are still lacking. This study compares three DCS analytical models: semi-infinite, two-layer, and three-layer, focusing on their fitting strategies, performance, and suitability for CBFi and relative CBFi (rCBFi) estimation. We simul…

Optimizing quantum sensing networks via genetic algorithms and deep learning
Asghar Ullah, \"Ozg\"ur E. M\"ustecapl{\i}o\u{g}lu, Matteo G. A. Paris
https://arxiv.org/abs/2507.17460

Optimizing quantum sensing networks via genetic algorithms and deep learning
We investigate the optimization of graph topologies for quantum sensing networks designed to estimate weak magnetic fields. The sensors are modeled as spin systems governed by a transverse-field Ising Hamiltonian in thermal equilibrium at low temperatures. Using a genetic algorithm (GA), we evolve network topologies to maximize a perturbative spectral sensitivity measure, which serves as the fitness function for the GA. For the best-performing graphs, we compute the corresponding quantum Fisher…

Test fitting boards in a STEP export of the current rack chassis using Dune3D for the first time.
It's definitely got some rough edges but I think it has potential. Doesn't feel as polished as SolveSpace but the STEP import is a key feature I've found missing in other tools.
But I can't figure out how to do boolean operations on imported step geometry, even if I say it's part of a solid body I'm not able to e.g. do an extrusion to cut off the lid of the ch…

Further steps towards next generation of covariant energy density functionals
B. Osei, A. V. Afanasjev, A. Taninah, A. Dalbah, U. C. Perera, V. A. Dzuba, V. V. Flambaum
https://arxiv.org/abs/2507.17082

Further steps towards next generation of covariant energy density functionals
The present study aims at further development of covariant energy density functionals (CEDFs) towards more accurate description of binding energies across the nuclear chart. For the first time, infinite basis corrections to binding energies in the fermionic and bosonic sectors of the covariant density functional theory have been taken into account in the fitting protocol within the covariant density functional theory. In addition, total electron binding energies have been used in the conversi…

Experimental Investigation of Availability in a 4.6 km Terrestrial Urban Coherent Free-Space Optical Communications Link
Vincent van Vliet, Menno van den Hout, Kadir G\"um\"u\c{s}, Eduward Tangdiongga, Chigo Okonkwo
https://arxiv.org/abs/2507.06051

Experimental Investigation of Availability in a 4.6 km Terrestrial Urban Coherent Free-Space Optical Communications Link
We measured the outage probability of a 4.6-km urban free-space optical communication link over six days. High-speed power measurements reveal slow and fast fading effects, with link availabilities of 92% including and 99% excluding slow fades for 500 Gb/s transmission.

PDRs4All XIV: CH radical and $H_3^ $ molecular ion in the irradiated protoplanetary disk d203-506
I. Schroetter, O. Bern\'e, J. R. Goicoechea, J. H. Black, O. Roncero, F. Alarcon, P. Amiot, O. Asvany, C. Boersma, S. Br\"unken, J. Cami, L. Coudert, E. Dartois, A. Fuente, B. Gans, A. Gusdorf, U. Jacovella, M. A. Martin Drumel, T. Onaka, E. Peeters, E. Roueff, A. G. G. M. Tielens, M. Zannese

PDRs4All XIV: CH radical and $H_3^+$ molecular ion in the irradiated protoplanetary disk d203-506
Most protoplanetary disks experience a phase in which they are subjected to strong ultraviolet radiation from nearby massive stars. This UV radiation can substantially alter their chemistry by producing numerous radicals and molecular ions. In this Letter we present detailed analysis of the JWST-NIRSpec spectrum of the d203-506 obtained as part of the PDRs4All Early Release Science program. Using state-of-the-art spectroscopic data, we searched for species using a multi-molecule fitting tool, P…

Detailed Time Resolved Spectral and Temporal Investigations of SGR J1550-5418 Bursts Detected with Fermi/Gamma-ray Burst Monitor
Mustafa Demirer, Ersin G\"o\u{g}\"u\c{s}, Yuki Kaneko, \"Ozge Keskin, Sinem \c{S}a\c{s}maz, Shotaro Yamasaki
https://arxiv.org/abs/2506.04414

Detailed Time Resolved Spectral and Temporal Investigations of SGR J1550-5418 Bursts Detected with Fermi/Gamma-ray Burst Monitor
We have conducted a time-resolved spectral analysis of magnetar bursts originating from SGR J1550-5418. Our analysis utilizes a two-step methodology for temporal segmentation of the data. We first generated and fitted overlapping time segments. Subsequently, we obtained non-overlapping time segments with varying lengths based on their spectral evolution patterns, employing a machine learning algorithm called k-means clustering. For the fitting process, we employed three distinct models, namely …