Tootfinder

Optimal run-tumble navigation in disordered landscapes
Yang Bai, Caiyun He, Weirong Liu, Songtao Cheng, Pan Chu, Liang Luo, Chenli Liu, Xiongfei Fu
https://arxiv.org/abs/2510.12106

Optimal run-tumble navigation in disordered landscapes
Active navigation in disordered media is governed by the interplay between self-propulsion and environmental constraints. Using the chemotaxis of E. coli in agar gels as a model system, we uncover a universal trade-off between persistence and obstacle avoidance that dictates optimal search strategies. We find that populations evolving under pressure for rapid expansion adapt by shortening their mean run time (τ_f), counter to the intuition that longer runs always favor faster migration. Contro…

A ferroelectric junction transistor memory made from switchable van der Waals p-n heterojunctions
Baoyu Wang, Lingrui Zou, Tao Wang, Lijun Xu, Zexin Dong, Xin He, Shangui Lan, Yinchang Ma, Meng Tang, Maolin Chen, Chen Liu, Zhengdong Luo, Lijie Zhang, Zhenhua Wu, Yan Liu, Genquan Han, Bin Yu, Xixiang Zhang, Fei Xue, Kai Chang
https://arxiv.…

A ferroelectric junction transistor memory made from switchable van der Waals p-n heterojunctions
Van der Waals (vdW) p-n heterojunctions are important building blocks for advanced electronics and optoelectronics, in which high-quality heterojunctions essentially determine device performances or functionalities. Creating tunable depletion regions with substantially suppressed leakage currents presents huge challenges, but is crucial for heterojunction applications. Here, by using band-aligned p-type SnSe and n-type ferroelectric α-In2Se3 as a model, we report near-ideal multifunctional vdW…

Timbaland's Stage Zero launches TaTa Taktumi, an AI pop artist created using Suno's tools; Timbaland says ~85% of the creative work is still done by humans (David Peisner/New York Times)
https://www.nytimes.com/2025/12/09/arts/music/timbaland-a…

Timbaland’s Latest Protégée Is an A.I. Pop Singer
The producer dreamed up TaTa Taktumi and brought her to life with help from the software Suno. She’s arriving at a fraught moment for artificial intelligence in music.

An effective density matrix for vacua in asymptotically flat gravity
Temple He, Prahar Mitra, Kathryn M. Zurek
https://arxiv.org/abs/2509.13401 https://arx…

An effective density matrix for vacua in asymptotically flat gravity
We explicitly construct the density matrix associated to the vacuum state of a large spherically symmetric causal diamond of area $A$ in four-dimensional asymptotically flat gravity. We achieve this using the soft effective action, which characterizes the low-energy gravitational degrees of freedom that arise in the long-distance limit of the Einstein-Hilbert action and consists of both the soft graviton mode and the Goldstone mode arising from the spontaneous breaking of supertranslation symme…

Short-Duration Gravitational Wave Burst Detection using Convolutional Neural Network
Matteo Pracchia, Sacha Peters, Maxime Fays
https://arxiv.org/abs/2509.13241 https://

Short-Duration Gravitational Wave Burst Detection using Convolutional Neural Network
Detecting unmodeled gravitational wave (GW) bursts presents significant challenges due to the lack of accurate waveform templates required for matched-filtering techniques. A primary difficulty lies in distinguishing genuine signals from transient noise. Machine learning approaches, particularly convolutional neural networks (CNNs), offer promising alternatives for this classification problem. This paper presents a CNN-based pipeline for detecting short GW bursts (duration $< 10~\mathrm{s}$), a…