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Related Articles from SNS
Pulse Breathing Dynamics in a Mode-Locked Laser measured via SHG autocorrelation
arXiv:2603.24988v2 Announce Type: replace Abstract: Pulse-to-pulse fluctuations in mode-locked lasers fundamentally limit applications from optical frequency combs to supercontinuum generation. While timing jitter has been extensively characterized, pulse amplitude and width fluctuations remain less accessible experimentally. We present a statistical autocorrelation method that demonstrates pulse breathing dynamics through Fano factor analysis of second-harmonic generation autocorrelation.
Ethiopia holds elections with PM Abiy’s party expected to dominate
Ethiopia holds elections with PM Abiy’s party expected to dominate Voting will not take place in northern Tigray region and some parts of the Amhara region amid insecurity. Ethiopians have begun voting in parliamentary and regional elections, with Prime Minister Abiy Ahmed’s party projected to win by a landslide, despite significant unrest in much of the country. More than 50 million people are registered to vote on Monday.
Dielectric-Anisotropy-Induced Quasi-BIC Activation for Spatial Differentiation in All-Dielectric Metasurfaces
arXiv:2606.01983v1 Announce Type: new Abstract: Quasi-BICs in dielectric metasurfaces are typically obtained through geometric symmetry breaking. Here, a 20\,nm BeS insert is placed in the gap of a symmetric TiO$_2$ nanobar pair. The anisotropy of the BeS layer ($\Delta\varepsilon \approx 0.27$) relaxes the dipole-cancellation condition and gives rise to a quasi-BIC resonance.
Ethiopia votes in elections expected to give Abiy's party a landslide win
Ethiopia votes in elections expected to give Abiy's party a landslide win Ethiopians voted on Monday in parliamentary and regional elections expected to hand Prime Minister Abiy Ahmed’s ruling Prosperity Party a landslide win. There was no election in the Tigray region due to “unfavourable conditions”, and voting in the Oromo and Amhara regions were interrupted due to security problems, according to election officials. To display this content from YouTube, you must enable advertisement...
Information-Theoretic Bounds for Sparse Covariance Estimation in the Vertical-Split Distributed Model
Announce Type: new Abstract: We study the minimax estimation error for distributed covariance matrix estimation in the vertical-split (feature-split) setting, where two agents each observe different coordinates of $m$ i.i.d. and communicate a limited number of bits to a central server. [2025] established nearly tight bounds for dense (unstructured) cross-covariance matrices, we investigate whether imposing elementwise $s$-sparsity on the cross-covariance $C_{21}$ can reduce the required...
Browns general manager explains why he changed his mind on trading Myles Garrett: 'Opportunity was too great'
The Cleveland Browns sent shockwaves throughout the National Football League this week when they traded reigning Defensive Player of the Year Myles Garrett fresh off becoming the league's single-season sack record holder. Garrett was sent to the Los Angeles Rams for a large package that makes an already-stacked Rams squad even better, as the Browns now must adjust to life without Garrett for the first time since 2016.Garrett requested a trade from the Browns last year, but the Browns wound...
A Temporal Spatial Minimax Rate for Smoothly-Varying Distributions in Wasserstein Space
arXiv:2606.07325v1 Announce Type: cross Abstract: We study the minimax rate of estimating a future value $\mu_{t_n+h}$ of a curve $t\mapsto\mu_t$ in the $2$-Wasserstein space $\mathcal{P}_2(\mathbb{R}^d)$ from finitely many noisy snapshots of its past, under an adiabatic bound $\|\nabla_t^k v\|\le\varepsilon$ on the $k$-th covariant derivative of the velocity field. Our central result is a unified temporal-spatial minimax lower bound: over regular, locally transport-rich subclasses, every...
Ranking college football's top 100 newcomers for t...
If the upcoming 2026 college football season is anything like its predecessor, transfer quarterbacks and top freshmen will be crucial for many College Football Playoff runs. And by now, with less than 100 days until the start of the season, we can assess rosters and what players did during spring practice with their new teams. While we have analyzed the top newcomer for each Power 4 team, these rankings are regardless of teams.
Barnwell makes sense of the Myles Garrett blockbus...
In the NFL's relentless attempt to colonize every day of the American sporting calendar, 2026 might be the year that the league officially plants a flag and takes over June 1. On a day when the football landscape was already prepared for an A.J. Brown trade and learned about the de facto retirement of a legendary quarterback in Russell Wilson, the Los Angeles Rams and Cleveland Browns one-upped everyone and made the biggest move of the offseason. Months after Andrew Berry insisted that any...
Pointwise Complexity for Gaussian Fields: Upper Envelopes, Algorithmic Lower Bounds, and Separation
Announce Type: cross Abstract: We prove a variance-aware pointwise majorizing-measure theorem for centered Gaussian processes. Classical generic chaining characterizes the scalar quantity $\mathbb E\sup_{x\in T}X_x$; the theorem here gives a simultaneous high-probability envelope for the entire field. For an ambient prior $\mu$, the envelope at $x$ is governed by a pointwise Fernique-Talagrand functional...