Rarely categorical, always high-dimensional: how the neural code changes along the cortical hierarchy

Posted by dbos Columbia

Kavli Affiliate: Stefano Fusi | Authors: Lorenzo Posani, Shuqi Wang, Samuel Muscinelli, Liam Paninski and Stefano Fusi | Summary: A long-standing debate in neuroscience concerns whether individual neurons are organized into functionally distinct populations that encode information differently (“categorical” representations [1–3]) and the implications for neural computation. Here, we systematically analyzed how cortical neurons encode […]


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Imaging orbital Rashba induced charge transport anisotropy

Posted by dbos Delft

Kavli Affiliate: Andrea D. Caviglia | First 5 Authors: Eylon Persky, Xi Wang, Giacomo Sala, Thierry C. van Thiel, Edouard Lesne | Summary: Identifying orbital textures and their effects on the electronic properties of quantum materials is a critical element in developing orbitronic devices. However, orbital effects are often entangled with the spin degree of […]


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The Pristine survey: XXVIII. The extremely metal-poor stream C-19 stretches over more than 100 degrees

Posted by dbos Peking

Zhen Yuan, Tadafumi Matsuno, Tatyana Sitnova, Nicolas F. Martin, Rodrigo A. Ibata | Summary: [[{“value”:”The discovery of the most metal-poor stream, C-19, provides us with a fossil record of a stellar structure born very soon after the Big Bang. In this work, we search for new C-19 members over the whole sky by combining two […]


Continue.. The Pristine survey: XXVIII. The extremely metal-poor stream C-19 stretches over more than 100 degrees

Superspin Renormalization and Slow Relaxation in Random Spin Systems

Posted by dbos Berkeley

Kavli Affiliate: Joel E. Moore | First 5 Authors: Yi J. Zhao, Samuel J. Garratt, Joel E. Moore, , | Summary: We develop an excited-state real-space renormalization group (RSRG-X) formalism to describe the dynamics of conserved densities in randomly interacting spin-$frac{1}{2}$ systems. Our formalism is suitable for systems with $textrm{U}(1)$ and $mathbb{Z}_2$ symmetries, and we […]


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Superspin Renormalization and Slow Relaxation in Random Spin Systems

Posted by dbos Berkeley

Kavli Affiliate: Joel E. Moore | First 5 Authors: Yi J. Zhao, Samuel J. Garratt, Joel E. Moore, , | Summary: We develop an excited-state real-space renormalization group (RSRG-X) formalism to describe the dynamics of conserved densities in randomly interacting spin-$frac{1}{2}$ systems. Our formalism is suitable for systems with $textrm{U}(1)$ and $mathbb{Z}_2$ symmetries, and we […]


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Chinese Pulsar Timing Array upper limits on microhertz gravitational waves from supermassive black-hole binaries using PSR J1713+0747 FAST data

Posted by dbos Peking

Kavli Affiliate: Kejia Lee | First 5 Authors: R. Nicolas Caballero, Heng Xu, Kejia Lee, Siyuan Chen, Yanjun Guo | Summary: We derive the gravitational-wave (GW) strain upper limits from resolvable supermassive black-hole binaries using the data from the Five-hundred-meter Aperture Spherical radio Telescope (FAST), in the context of the Chinese Pulsar Timing Array project. […]


Continue.. Chinese Pulsar Timing Array upper limits on microhertz gravitational waves from supermassive black-hole binaries using PSR J1713+0747 FAST data

Graph-Theoretic Analysis of $n$-Replica Time Evolution in the Brownian Gaussian Unitary Ensemble

Posted by dbos UCAS

Kavli Affiliate: Cheng Peng | First 5 Authors: Tingfei Li, Cheng Peng, Jianghui Yu, , | Summary: In this paper, we investigate the $n$-replica time evolution operator $mathcal{U}_n(t)equiv e^{mathcal{L}_nt} $ for the Brownian Gaussian Unitary Ensemble (BGUE) using a graph-theoretic approach. We examine the moments of the generating operator $mathcal{L}_n$, which governs the Euclidean time […]


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Searching for axion dark matter gegenschein of the Vela supernova remnant with FAST

Posted by dbos MIT

Kavli Affiliate: Kiyoshi Masui | First 5 Authors: Wenxiu Yang, Yitian Sun, Yougang Wang, Katelin Schutz, Yichao Li | Summary: Axions are one of the leading dark matter candidates. If we are embedded in a Milky Way dark matter halo comprised of axions, their stimulated decay would enable us to observe a counterimage (“axion gegenschein") […]


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LLM-Enhanced Multiple Instance Learning for Joint Rumor and Stance Detection with Social Context Information

Posted by dbos Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Ruichao Yang, Jing Ma, Wei Gao, Hongzhan Lin, | Summary: The proliferation of misinformation, such as rumors on social media, has drawn significant attention, prompting various expressions of stance among users. Although rumor detection and stance detection are distinct tasks, they can complement each other. Rumors can […]


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DESI dark secrets

Posted by dbos Chicago

Kavli Affiliate: Michael S. Turner | First 5 Authors: Matilde Lopes Abreu, Michael S. Turner, , , | Summary: The first year results of DESI provide evidence that dark energy may not be quantum vacuum energy ($Lambda$). If true, this would be an extraordinary development in the 25-year quest to understand cosmic acceleration. The best-fit […]


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