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The new standard in Chicago, plus why Dillon Gabriel was better than most thought https://www.nytimes.com/athletic/6569629/2025/08/22/bears-ben-johnson-detail-dillon-gabriel-browns-scoop-city/

Quenched Quantum Feature Maps
Anton Simen, Carlos Flores-Garrigos, Murilo Henrique De Oliveira, Gabriel Dario Alvarado Barrios, Juan F. R. Hern\'andez, Qi Zhang, Alejandro Gomez Cadavid, Yolanda Vives-Gilabert, Jos\'e D. Mart\'in-Guerrero, Enrique Solano, Narendra N. Hegade, Archismita Dalal
https://arxiv.org/abs/2508.20975

Quenched Quantum Feature Maps
We propose a quantum feature mapping technique that leverages the quench dynamics of a quantum spin glass to extract complex data patterns at the quantum-advantage level for academic and industrial applications. We demonstrate that encoding a dataset information into disordered quantum many-body spin-glass problems, followed by a nonadiabatic evolution and feature extraction via measurements of expectation values, significantly enhances machine learning (ML) models. By analyzing the performance…

Multi-cluster distributed optimization in open multi-agent systems over directed graphs with acknowledgement messages
Evagoras Makridis, Gabriele Oliva, Themistoklis Charalambous
https://arxiv.org/abs/2508.20715

Multi-cluster distributed optimization in open multi-agent systems over directed graphs with acknowledgement messages
In this paper, we tackle the problem of distributed optimization over directed networks in open multi-agent systems (OMAS), where agents may dynamically join or leave, causing persistent changes in network topology and problem dimension. These disruptions not only pose significant challenges to maintaining convergence and stability in distributed optimization algorithms, but could also break the network topology into multiple clusters, each one associated with its own set of objective functions…

Unclustered BWTs of any Length over Non-Binary Alphabets
Gabriele Fici, Est\'eban Gabory, Giuseppe Romana, Marinella Sciortino
https://arxiv.org/abs/2508.20879 https://

Unclustered BWTs of any Length over Non-Binary Alphabets
We prove that for every integer $n > 0$ and for every alphabet $Σ_k$ of size $k \geq 3$, there exists a necklace of length $n$ whose Burrows-Wheeler Transform (BWT) is completely unclustered, i.e., it consists of exactly $n$ runs with no two consecutive equal symbols. These words represent the worst-case behavior of the BWT for clustering, since the number of BWT runs is maximized. We also establish a lower bound on their number. This contrasts with the binary case, where the existence of infi…

Energetics and thermodynamics of bilayer rectangular artificial spin ices
Gabriel A. Oliveira (Departamento de F\'isica, Universidade Federal de Vi\c{c}osa, 36570-900, Vi\c{c}osa, Minas Gerais, Brazil), Winder A. Moura-Melo (Departamento de F\'isica, Universidade Federal de Vi\c{c}osa, 36570-900, Vi\c{c}osa, Minas Gerais, Brazil), Afranio R. Pereira (Departamento de F\'isica, Universidade Federal de Vi\c{c}osa, 36570-900, Vi\c{c}osa, Minas Gerais, Brazil), Fabio S. Nascimen…

Energetics and thermodynamics of bilayer rectangular artificial spin ices
Bilayer rectangular artificial spin ices (BRASIs) with distinct aspect ratios, $γ$, are considered. Namely, we investigate how the underlying geometry modifies the interaction between two rectangular artificial spin ice layers separated by a height offset, $h$, whenever compared to the square case. Actually, rectangular layers interact by means of a Buckingham-like potential, whereas in the square case, one has an algebraic (van der Walls-like) interaction. In addition, Moiré patterns for BRA…

The NANOGrav 15-Year Data Set: Improved Timing Precision With VLBI Astrometric Priors
Sofia V. Sosa Fiscella, Michael T. Lam, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Paul R. Brook, H. Thankful Cromartie, Kathryn Crowter, Maria Silvina De Biasi, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Deborah C. Go…

The NANOGrav 15-Year Data Set: Improved Timing Precision With VLBI Astrometric Priors
Accurate pulsar astrometric estimates play an essential role in almost all high-precision pulsar timing experiments. Traditional pulsar timing techniques refine these estimates by including them as free parameters when fitting a model to observed pulse time-of-arrival measurements. However, reliable sub-milliarcsecond astrometric estimations require years of observations and, even then, power from red noise can be inadvertently absorbed into astrometric parameter fits, biasing the resulting est…

Inferring Mbh-Mbulge Evolution from the Gravitational Wave Background
Cayenne Matt, Kayhan Gultekin, Luke Kelley, Laura Blecha, Joseph Simon, Gabriella Agazie, Akash Anumarlapudi, Anne Archibald, Zaven Arzoumanian, Jeremy Baier, Paul Baker, Bence B\'ecsy, Adam Brazier, Paul Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, James Casey-Clyde, Maria Charisi, Shami Chatterjee, Tyler Cohen, James Cordes, Neil Cornish, Fronefield Crawford, H. Thankful Cromartie, Kathryn Crowter, Me…

Inferring Mbh-Mbulge Evolution from the Gravitational Wave Background
We test the impact of an evolving supermassive black hole (SMBH) mass scaling relation (Mbh-Mbulge) on the predictions for the gravitational wave background (GWB). The observed GWB amplitude is 2-3 times higher than predicted by astrophysically informed models which suggests the need to revise the assumptions in those models. We compare a semi-analytic model's ability to reproduce the observed GWB spectrum with a static versus evolving-amplitude Mbh-Mbulge relation. We additionally consider the…

VVV-WIT-13: an eruptive young star with cool molecular features
Zhen Guo, Philip Lucas, Sergey N. Yurchenko, Tomasz Kaminski, Matias Montesinos, Sergei Nayakshin, Vardan Elbakyan, Javier Osses, Alessio Caratti o Garatti, He Zhao, Radostin Kurtev, Jura Borissova, Calum Morris, Dante Minniti, Javier Alonso-Garc\'ia, Vitor Fermiano, Roberto K. Saito, Niall Miller, Gabriella Zsidi, H. D. S. Muthu, Cesar Brice\~no, Carlos Contreras Pe\~na, A. E. Lynas-Gray, Johnathan Tennyson, Lingzhi W…

VVV-WIT-13: an eruptive young star with cool molecular features
Here we investigate an infrared eruptive source, identified from the decade-long VISTA Variables in the Via Lactea survey (VVV). We named this target after a group of variable sources discovered by VVV, as VVV-WIT-13, with WIT standing for "What Is This?", due to its unique photometric variation behaviour and the mysterious origin of the outburst. This target exhibited an outburst with a 5.7 mag amplitude in the Ks-band, remained on its brightness plateau for 3.5 years, and then rapidly faded t…

🇺🇦 #NowPlaying on BBCRadio3's #ThroughTheNight
Jan Dismas Zelenka, Katharina Heutjer, Xenia Löffler, Gabriele Gombi, La Cetra Baroque Orchestra Basle & Maurice Steger:
🎵 Sinfonia concertante a 8, ZWV 189
#JanDismasZelenka #KatharinaHeutjer #XeniaLöffler #GabrieleGombi

The NANOGrav 15 yr Data Set: Targeted Searches for Supermassive Black Hole Binaries
Nikita Agarwal, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Jeremy G. Baier, Paul T. Baker, Bence Becsy, Laura Blecha, Adam Brazier, Paul R. Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, J. Andrew Casey-Clyde, Yu-Ting Chang, Maria Charisi, Shami Chatterjee, Tyler Cohen, Paolo Coppi, James M. Cordes, Neil J. Cornish, Fronefield Crawford, H. Thankful Cromartie, Kat…

The NANOGrav 15 yr Data Set: Targeted Searches for Supermassive Black Hole Binaries
We present the first catalog of targeted searches for continuous gravitational waves (CWs) from 114 active galactic nuclei (AGN) that may host supermassive black hole binaries (SMBHBs), using the NANOGrav 15 yr data set. By incorporating electromagnetic priors on sky location, distance, redshift, and CW frequency, our strain and chirp mass upper limits are on average 2.6$\times$ more constraining than sky-averaged limits. Bayesian model comparisons against a common uncorrelated red noise for th…