Xin Wang

$U$-spin symmetry is substantially broken in $D^0 \to K\pi\pi$ decays, with measured breaking parameters reaching magnitudes up to $4.45$.

A prominent $π^{0}π^{0}$ mass threshold enhancement, mirroring the $π^+π^-$ channel, is definitively observed in $ψ(3686)$ decays, challenging simple chiral descriptions.

FP4 RL for MoE LLMs can now match BF16 rollout quality with 5.4x speedup by directly aligning train-rollout quantization.

Arbitrarily large Rényi entropy additivity gaps are now constructible for quantum channels across all orders above any positive threshold.

A mechanistic analysis of the LW-DSC metric is provided that explains why recall-recovering post-processing carries low risk whereas component deletion does not, and thirteen negative results spanning loss engineering, alternative backbones, and inference-time settings are reported.

Findings reveal sustained, dependency-consistent evidence integration, rather than isolated fact retrieval, as a key bottleneck for current deep research agents.

Spatio-temporal masking during student self-rollouts breaks the reverse-KL mode-collapse trap in autoregressive video diffusion, eliminating visual over-smoothing without relying on real video data.