Tootfinder

The near infrared airglow continuum conundrum. Constraints for ground-based faint object spectroscopy
J. K. M. Viuho (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark, Nordic Optical Telescope, Rambla Jose Ana Fernandez Perez 7, ES-38711 Brena Baja, Spain, Department of Physics and Astronomy, Aarhus University, Munkegade 120, DK-8000 Aarhus C, Denmark), J. P. U. Fynbo (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark), M. I. Andersen (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark)
#toXiv_bot_toot

A Concurrent Multiscale Framework Coupling Direct Simulation Monte Carlo and Molecular Dynamics
Tim Linke, Dane Sterbentz, Niels Gr{\o}nbech-Jensen, Jean-Pierre Delplanque, Jonathan Belof
https://arxiv.org/abs/2506.01924

A Concurrent Multiscale Framework Coupling Direct Simulation Monte Carlo and Molecular Dynamics
We present a new method to couple the Direct Simulation Monte Carlo (DSMC) algorithm with molecular dynamics (MD). The coupling approach generalizes prior coupling methods using a cell-based decision. The approach is supported by a lifting and restricting operator, which translate length and time scales between DSMC and MD. We verify the framework on basic conservation laws, and demonstrate its usability on a hypersonic flow example. Its accuracy gain is discussed in light of conventional DSMC …

Path integral analysis of Schr\"odinger-type eigenvalue problems in the complex plane: Establishing the relation between instantons and resonant states
Bj\"orn Garbrecht, Nils Wagner
https://arxiv.org/abs/2507.23125

Path integral analysis of Schrödinger-type eigenvalue problems in the complex plane: Establishing the relation between instantons and resonant states
Schrödinger-type eigenvalue problems are ubiquitous in theoretical physics, with quantum-mechanical applications typically confined to cases for which the eigenfunctions are required to be normalizable on the real axis. However, seeking the spectrum of resonant states for metastable potentials or comprehending $\mathcal{PT}$-symmetric scenarios requires the broader study of eigenvalue problems for which the boundary conditions are provided in specific angular sectors of the complex plane. We g…

Principled Curriculum Learning using Parameter Continuation Methods
Harsh Nilesh Pathak, Randy Paffenroth
https://arxiv.org/abs/2507.22089 https://arxiv.or…

Principled Curriculum Learning using Parameter Continuation Methods
In this work, we propose a parameter continuation method for the optimization of neural networks. There is a close connection between parameter continuation, homotopies, and curriculum learning. The methods we propose here are theoretically justified and practically effective for several problems in deep neural networks. In particular, we demonstrate better generalization performance than state-of-the-art optimization techniques such as ADAM for supervised and unsupervised learning tasks.

Roughening and dynamics of an electric flux string in a (2 1)D lattice gauge theory
Francesco Di Marcantonio, Sunny Pradhan, Sofia Vallecorsa, Mari Carmen Ba\~nuls, Enrique Rico Ortega
https://arxiv.org/abs/2505.23853

Roughening and dynamics of an electric flux string in a (2+1)D lattice gauge theory
We investigate the roughening transition in the pure $\mathbb{Z}_2$ lattice gauge theory in (2+1) dimensions. Using numerical simulations with matrix product states, we explore the static and dynamical properties of an electric flux string between two static charges as the coupling is varied and approaches the deconfinement phase transition from the confined phase. Within the roughening region, we obtain the universal Lüscher correction to the confining potential and observe the expected resto…

Tracing Red Giant Members of the Globular Cluster Palomar 5 with APOGEE and Gaia
Allyson A. Sheffield, Sarah Pearson, Lenin F. Nolasco, Rachael L. Beaton, Adrian M. Price-Whelan, Katia Cunha, Verne V. Smith, Rafael Guerco
https://arxiv.org/abs/2507.21212

Tracing Red Giant Members of the Globular Cluster Palomar 5 with APOGEE and Gaia
The globular cluster Palomar 5 (Pal 5) is in the process of being tidally shredded as it orbits the Milky Way. Its core is currently at a heliocentric distance of ~21 kpc, near apogalacticon (~18 kpc), and it reaches ~5-7 kpc at perigalacticon. Pal 5's leading and trailing arms stretch over 20 degrees on the sky, making them sensitive probes of the Milky Way's mass distribution. In this work, we search for red giant members of Pal 5 using spectroscopic data from APOGEE DR17 and photometric and …

Eine weitere Lektüre zum #PrideMonth: "Herzschlag" von Karen Hertfelder.
Die Geschichte erzählt in einem etwas groben Strich und in gelegentlich mit ein paar Flächenfarben angereicherten Bildern die Geschichte zweier junger Frauen, die im Boxen Rivalinnen sind - die jenseits davon aber bald eine Liebe verbindet.

Yue-Sai Kan is a Chinese-American television host, producer, author, entrepreneur and humanitarian. Renowned for her work in bridging the gap between China and the United States, she has been nicknamed "The Oprah of China". People, The Observer and ABS News have called her "the most famous woman in China".

Dual RIS-Assisted Monostatic L-Band Radar Target Detection in NLoS Scenarios
Salman Liaquat, Ijaz Haider Naqvi, Nor Muzlifah Mahyuddin
https://arxiv.org/abs/2507.11036

Dual RIS-Assisted Monostatic L-Band Radar Target Detection in NLoS Scenarios
The use of a single Reconfigurable Intelligent Surface (RIS) to boost the signal-to-noise ratio (SNR) at the radar offers significant improvement in detecting targets, especially in non-line-of-sight (NLoS) scenarios. However, there are scenarios where no path exists between the radar and the target, even with a single RIS-assisted radar, due to other present obstacles. This paper derives an expression for SNR in target detection scenarios where dual RISs assist a monostatic radar in NLoS situa…

On the relationship between prediction intervals, tests of sharp nulls and inference on realized treatment effects in settings with few treated units
Luis Alvarez, Bruno Ferman
https://arxiv.org/abs/2506.14998

On the relationship between prediction intervals, tests of sharp nulls and inference on realized treatment effects in settings with few treated units
We study how inference methods for settings with few treated units that rely on treatment effect homogeneity extend to alternative inferential targets when treatment effects are heterogeneous -- namely, tests of sharp null hypotheses, inference on realized treatment effects, and prediction intervals. We show that inference methods for these alternative targets are deeply interconnected: they are either equivalent or become equivalent under additional assumptions. Our results show that methods d…