Tootfinder

CLF-RL: Control Lyapunov Function Guided Reinforcement Learning
Kejun Li, Zachary Olkin, Yisong Yue, Aaron D. Ames
https://arxiv.org/abs/2508.09354 https://

CLF-RL: Control Lyapunov Function Guided Reinforcement Learning
Reinforcement learning (RL) has shown promise in generating robust locomotion policies for bipedal robots, but often suffers from tedious reward design and sensitivity to poorly shaped objectives. In this work, we propose a structured reward shaping framework that leverages model-based trajectory generation and control Lyapunov functions (CLFs) to guide policy learning. We explore two model-based planners for generating reference trajectories: a reduced-order linear inverted pendulum (LIP) mode…

Results from IceCube Follow-up of Nearby Supernova SN2023ixf
Alicia Mand, Justin Vandenbroucke, Jessie Thwaites, Sam Hori, Aswathi Balagopal V
https://arxiv.org/abs/2507.07097

Results from IceCube Follow-up of Nearby Supernova SN2023ixf
Core-collapse supernovae are of particular interest in multi-messenger astronomy due to their potential to accelerate cosmic rays and produce high-energy neutrinos. One such supernova is the recent SN2023ixf located in M101 (the Pinwheel Galaxy). It is the closest (6.4 Mpc) and brightest (B band magnitude 10.8) core-collapse supernova in nearly a decade. This supernova likely had a progenitor surrounded by dense circumstellar material which, during the supernova, may have produced neutrinos whe…

Interacting Electronic Topology of Nonlocal Crystals
Shu Hamanaka, Martina O. Soldini, Tsuneya Yoshida, Titus Neupert
https://arxiv.org/abs/2506.10071 http…

Interacting Electronic Topology of Nonlocal Crystals
Nonlocal crystals are systems with translational symmetry but arbitrary range couplings or interactions between degrees of freedom. We argue that the notion of topology in such systems does not collapse to that in zero dimensions, as one may naively expect in view of the infinite interaction range. At the same time, we show that the range of available topological phases can be enriched in comparison to the case with local interactions. This is demonstrated by constructing an example of a fermio…