Author

S. Reuveni

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Preprint Sep 2026

First Passage in the Presence of Jump Rate Fluctuations: A Transition from Infinite to Finite Mean

A simple symmetric random walk on a one-dimensional lattice is guaranteed to reach any target site, yet its mean first-passage time diverges. Here, we show that stochastic fluctuations in the jump rate can fundamentally alter this classic result. We find a phase transition in the mean first-passage time: sufficiently b...

Bara Levit, S. Reuveni · 0 citations

Preprint Sep 2026

Transcription rate dynamics and RNA copy number noise: General relations and data-driven predictions

Stochastic models of gene expression typically begin with a microscopic model of transcription and propagate its statistics to the RNA distribution. Here we develop a doubly stochastic framework in which RNA production is Poisson conditional on a time-varying transcription rate $\lambda(t)$. For RNA lifetimes drawn ind...

Amara McCune, I. Golding, S. Reuveni et al. · 0 citations

#artificial intelligence Jan 2026

More Bang for the Buck: Improving the Inference of Large Language Models at a Fixed Budget using Reset and Discard (ReD)

Experiments on three LLMs across coding, math, and reasoning benchmarks demonstrate that ReD substantially reduces the required attempts, tokens, and USD cost to reach a desired coverage, while also offering an efficient way to measure inference power-laws.

S. Meir, Tommer D. Keidar, Noam Levi et al. · arXiv.org · 3 citations