3 papers
gr-qc2026
Characteristic evolution of conformal scattering: I. Scalar Waves in Minkowski Spacetime
Zhen-Tao He, Yu Tian, Hongbao Zhang
We study the conformal scattering of massless scalar waves in Minkowski spacetime. The conformal scattering problem is formulated as a Goursat (characteristic initial-value) proble…
cs.AI2026
When Entropy Is Not Enough: Reclaiming Lost Semantics in LLM Output Length Prediction
Feiyang Ren, Shengtao Wen, Lingbing Guo +3
Efficient LLM serving is often bottlenecked by the need to pad sequences to a fixed maximum length, and this wastes compute and degrades throughput. Predicting output lengths in ad…
gr-qc2026
Extremal non-rotating black holes have no fermionic Love
Xiankai Pang, Yu Tian, Hongbao Zhang
The static tidal Love numbers (TLNs) of -dimensional black holes vanish for bosonic perturbations but are generically nonzero for fermions, with rare exceptions. In this paper,…