Tootfinder

Announcing #Crossplane 2.0
https://blog.crossplane.io/announcing-crossplane-2-0/

Spectral fluctuations and crossovers in multilayer network
Himanshu Shekhar, Ashutosh Dheer, Santosh Kumar, N. Sukumar
https://arxiv.org/abs/2508.12913 https://

Spectral fluctuations and crossovers in multilayer network
We investigate spectral fluctuations in multilayer networks within the random matrix theory (RMT) framework to characterize universal and non-universal features. The adjacency matrix of a multilayer network exhibits a block structure, with diagonal blocks representing intra-layer connections and off-diagonal blocks encoding inter-layer connections. Applying appropriate scaling factors for these blocks, we equalize variances across inter- and intra-layers, enabling direct comparison of spectral …

A Dynamical Bulk-Boundary Correspondence in Two Dimensional Topological Matter
Tomasz Mas{\l}owski, Jesko Sirker, Nicholas Sedlmayr
https://arxiv.org/abs/2508.11521 https://

A Dynamical Bulk-Boundary Correspondence in Two Dimensional Topological Matter
Dynamical quantum phase transitions occur when a dynamical free energy becomes non-analytic at critical \emph{times}. They have been shown to exist in, among other systems, topological insulators and superconductors. Additionally in both one dimensional systems and two dimensional higher order topological matter a dynamical analogue of the bulk-boundary correspondence has been observed which is suggestive of a dynamical switching between different phases. If the time evolving Hamiltonian is top…

BELT: Block Encoding of Linear Transformation on Density Matrices
Fuchuan Wei, Rundi Lu, Yuguo Shao, Junfeng Li, Jin-Peng Liu, Zhengwei Liu
https://arxiv.org/abs/2508.12858 http…

BELT: Block Encoding of Linear Transformation on Density Matrices
Linear maps that are not completely positive play a crucial role in the study of quantum information, yet their non-completely positive nature renders them challenging to realize physically. The core difficulty lies in the fact that when acting such a map $\mathcal{N}$ on a state $ρ$, $\mathcal{N}(ρ)$ may not correspond to a valid density matrix, making it difficult to prepare directly in a physical system. We introduce Block Encoding of Linear Transformation (BELT), a systematic protocol tha…

Echoes and quasinormal modes of asymmetric black bounces
Alana C. L. Santos, Leandro A. Lessa, Roberto V. Maluf, Gonzalo J. Olmo
https://arxiv.org/abs/2508.11096 https://…

Echoes and quasinormal modes of asymmetric black bounces
We study quasinormal modes and echoes of symmetric and asymmetric black bounce solutions generated by anisotropic fluids within the framework of general relativity. We derive the effective potential governing massless scalar fields and compute the corresponding quasinormal mode spectra using three independent methods: sixth-order WKB, Pöschl-Teller and time-domain evolution. Our results show that symmetric black bounce configurations with horizons yield a standard single-barrier potential, whi…

Raiders’ Maxx Crosby Gets Honest About Patrick Mahomes https://heavy.com/sports/nfl/las-vegas-raiders/maxx-crosby-patrick-mahomes-chiefs-comments/?adt_ei=[email]

New blog post! Finally had time to do a writeup about my trigger crossbar project https://serd.es/2025/09/14/Trigger-crossbar.html
Basically it's a buffered digital switch matrix for passing trigger signals between instruments with dynamic re-routing and level shif…

On high dimensional maximal functions associated to Gaussians, balls, and spheres
Valentina Ciccone, B{\l}a\.zej Wr\'obel
https://arxiv.org/abs/2509.13791 https://

On high dimensional maximal functions associated to Gaussians, balls, and spheres
We prove that for each $p\in (1,\infty),$ the norms on $L^p(\mathbb{R}^d)$ of the maximal functions associated to Gaussians (heat semigroup), balls (Hardy-Littlewood averages), and spheres (spherical averages) converge, as the dimension $d\to \infty,$ to the same quantity $λ(p)$. This is derived from the fact that the norms on $L^2(\mathbb{R}^d)$ of the maximal functions corresponding to the differences of Gaussian, ball, and spherical averages converge to zero with the dimension $d.$ The fact…

Holography for stress-energy tensor flows
Xi-Yang Ran, Feng Hao, Hao Ouyang
https://arxiv.org/abs/2508.12275 https://arxiv.org/pdf/2508.12275

Holography for stress-energy tensor flows
We study the holographic description for general stress-energy tensor deformations in arbitrary dimensions using the metric flow approach. Mixed boundary conditions corresponding to these deformations emerge from solutions to the metric flow equations. To test this proposal, we analyze planar AdS black holes with such boundary conditions and find that the deformed energies satisfy flow equations consistent with the field theory interpretation. We further derive the commuting condition for stres…

Infinite-dimensional symmetries in plane wave spacetimes
Despontin Emilie, Detournay St\'ephane, Fontaine Dima
https://arxiv.org/abs/2508.12760 https://

Infinite-dimensional symmetries in plane wave spacetimes
We study the asymptotic symmetries of the Nappi-Witten spacetime in four dimensions, a plane wave arising as the Penrose limit of AdS$_2\times S^2$. Imposing suitable boundary conditions at large transverse distance, we uncover a new infinite-dimensional symmetry algebra allowing for non-trivial central extensions. The corresponding phase space encompasses the most general four-dimensional pp-wave metric, including in particular the Penrose limit of Kerr black holes.