Kavli Affiliate: Max Tegmark | First 5 Authors: Matthew Chen, Joshua Engels, Max Tegmark, , | Summary: Sparse autoencoders (SAEs) decompose language model representations into a sparse set of linear latent vectors. Recent works have improved SAEs using language model gradients, but these techniques require many expensive backward passes during training and still cause a […]

Kavli Affiliate: Li Xin Li | First 5 Authors: Jingxin Liu, Xiang Gao, Yisha Li, Xin Li, Haiyang Lu | Summary: In the context of a short video & live stream mixed recommendation scenario, the live stream recommendation system (RS) decides whether to allocate at most one live stream into the video feed for each […]

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Aihara, N. Akopov | Summary: We present measurements of the branching fractions of eight $overline B{}^0to D^{(*)+} K^- K^{(*)0}_{(S)}$, $B^{-}to D^{(*)0} K^- K^{(*)0}_{(S)}$ decay channels. The results are based on data from SuperKEKB electron-positron collisions at the $Upsilon(4S)$ resonance […]

Kavli Affiliate: Feng Yuan | First 5 Authors: Biaoyan Hu, Yingying Peng, Xiaoqiang Liu, Qizhi Li, Qiangqiang Gu | Summary: We investigate a spin-$frac{1}{2}$ antiferromagnet, CuBr$_2$, which has quasi-one-dimensional structural motifs. The system has previously been observed to exhibit unusual Raman modes possibly due to a locally deformed crystal structure driven by the low-dimensional magnetism. […]

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Claire E. Williams, William Lake, Smadar Naoz, Blakesley Burkhart, Tommaso Treu | Summary: The James Webb Space Telescope (JWST) is capable of probing extremely early eras of our Universe when the supersonic relative motions between dark matter and baryonic overdensities modulate structure formation ($z>sim 10$). We study […]

Kavli Affiliate: Kent Irwin | First 5 Authors: Frank J. Qu, Blake D. Sherwin, Mathew S. Madhavacheril, Dongwon Han, Kevin T. Crowley | Summary: We present new measurements of cosmic microwave background (CMB) lensing over $9400$ sq. deg. of the sky. These lensing measurements are derived from the Atacama Cosmology Telescope (ACT) Data Release 6 […]

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle Collaboration, H. B. Jeon, K. H. Kang, H. Park, I. Adachi | Summary: We report the first search for the penguin-dominated process $B^0 rightarrow K_S^0 K_S^0 gamma$ using the full data sample of $772times 10^6$ $Bbar{B}$ pairs collected with the Belle detector at the KEKB asymmetric-energy […]

Kavli Affiliate: Tom Melia | First 5 Authors: Angelo Esposito, Emma Geoffray, Tom Melia, , | Summary: We present a relativistic effective field theory for the interaction between acoustic and gapped phonons in the limit of a small gap. We show that, while the former are the Goldstone modes associated with the spontaneous breaking of […]