2 papers
cond-mat.stat-mech2026
Long-Range Order in a Strictly Short-Range Quasi-2D XY Model: When Critical Fluctuations Matter
Minghui Hu, Chao Zhang, Dajun Zhang +3
The phase of spins in the quasi-two-dimensional (q2D) XY model has emerged as a topic of significant interest across multiple subfields of physics. Conventional wisdom, rooted in t…
cs.CL2026
Not All Thoughts Need HBM: Semantics-Aware Memory Hierarchy for LLM Reasoning
Aojie Yuan, Tianqi Shen, Dajun Zhang
Reasoning LLMs produce thousands of chain-of-thought tokens whose KV cache must reside in scarce GPU HBM. The dominant response -- permanently evicting low-importance tokens -- is…