Toroidal topology of grid-cell activity precedes spatial navigation during development

Posted by dbos NTNU

Kavli Affiliate: Edvard Moser and May-Britt Moser | Authors: Matteo Guardamagna, Erik Hermansen, Jordan Carpenter, Christine Marie Lykken, Benjamin Adric Dunn, Edvard Ingjald Moser and May-Britt Moser | Summary: The medial entorhinal cortex (MEC) is a central component of the mammalian navigation system1–5, in which spatially and directionally tuned neurons, including grid cells and head-direction […]


Continue.. Toroidal topology of grid-cell activity precedes spatial navigation during development

Pattern stability in reaction-diffusion systems depends on path entropy

Posted by klaurent Berkeley

Kavli Affiliate: David T. Limmer | Summary:Reaction-diffusion systems driven far from thermodynamic equilibrium through the injection of energy can support multiple spatial patterns that persist as long-lived dynamical phases. The stability of these metastable phases is not determined by thermodynamics, but by the transition paths connecting them. At finite particle numbers, intrinsic stochasticity induces rare […]


Continue.. Pattern stability in reaction-diffusion systems depends on path entropy

Pattern stability in reaction-diffusion systems depends on path entropy

Posted by klaurent Berkeley

Kavli Affiliate: David T. Limmer | Summary:Reaction-diffusion systems driven far from thermodynamic equilibrium through the injection of energy can support multiple distinct spatial patterns that persist as long-lived dynamical phases. The stability of these metastable phases is not determined by thermodynamics, but by the transition paths connecting them. At finite particle numbers, intrinsic stochasticity induces […]


Continue.. Pattern stability in reaction-diffusion systems depends on path entropy

A systematic study of AGN feedback in a disk galaxy I: global overview

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:This is the first paper in a series using our MACER framework to investigate the evolution of a disk galaxy, which emphasizes the role of active galactic nucleus (AGN) feedback and incorporates cosmological inflows. This paper presents the model setup and the overall results. The predicted AGN duty cycle of […]


Continue.. A systematic study of AGN feedback in a disk galaxy I: global overview

Can electronic quantum criticality drive phonon-induced linear-in-temperature resistivity?

Posted by klaurent Cornell

Kavli Affiliate: Debanjan Chowdhury | Summary:Optical phonons naturally generate linear-in-$T$ resistivity in the high-temperature equipartition regime, but their finite gap prevents this mechanism from surviving to asymptotically low temperatures. Here we analyze whether proximity to an electronic quantum critical point can remove this obstruction by strongly softening an optical phonon. We first derive a model-independent […]


Continue.. Can electronic quantum criticality drive phonon-induced linear-in-temperature resistivity?

Can electronic quantum criticality drive phonon-induced linear-in-temperature resistivity?

Posted by klaurent Cornell

Kavli Affiliate: Debanjan Chowdhury | Summary:Optical phonons naturally generate linear-in-$T$ resistivity in the high-temperature equipartition regime, but their finite gap prevents this mechanism from surviving to asymptotically low temperatures. Here we analyze whether proximity to an electronic quantum critical point can remove this obstruction by strongly softening an optical phonon. We first derive a model-independent […]


Continue.. Can electronic quantum criticality drive phonon-induced linear-in-temperature resistivity?

FlowSN: Neural Simulation-Based Inference under Realistic Selection Effects applied to Supernova Cosmology

Posted by klaurent Cambridge

Kavli Affiliate: Kaisey Mandel | Summary:We present FlowSN, a statistical framework using simulation-based inference (SBI) with normalising flows to account for selection effects in observational astronomy. Failure to account for selection effects can lead to biased inference on global parameters. An example is Malmquist bias, where detection limits result in a sample skewed towards brighter […]


Continue.. FlowSN: Neural Simulation-Based Inference under Realistic Selection Effects applied to Supernova Cosmology

FlowSN: Neural Simulation-Based Inference under Realistic Selection Effects applied to Supernova Cosmology

Posted by klaurent Cambridge

Kavli Affiliate: Kaisey Mandel | Summary:We present FlowSN, a statistical framework using simulation-based inference (SBI) with normalising flows to account for selection effects in observational astronomy. Failure to account for selection effects can lead to biased inference on global parameters. An example is Malmquist bias, where detection limits result in a sample skewed towards brighter […]


Continue.. FlowSN: Neural Simulation-Based Inference under Realistic Selection Effects applied to Supernova Cosmology

Canonical decision computations underlie behavioral and neural signatures of cooperation in primates

Posted by dbos Yale

Kavli Affiliate: Anirvan Nandy | Authors: Weikang Shi, Olivia C. Meisner, Monika P. Jadi, Steve W. C. Chang and Anirvan S. Nandy | Summary: Successful cooperation requires dynamic integration of social cues. However, the neural mechanisms supporting this complex process remain unknown. Here, we reveal that the primate dorsomedial prefrontal cortex (dmPFC) implements a gaze-dependent […]


Continue.. Canonical decision computations underlie behavioral and neural signatures of cooperation in primates

Auroral Acceleration Generates Electron Beams in Jupiter’s Middle Magnetosphere

Posted by klaurent MIT

Kavli Affiliate: George Clark | Summary:Observations made by the Juno spacecraft above Jupiter’s polar regions have revealed that electrons accelerated toward Jupiter, which contribute to auroral emissions, are frequently accompanied by electrons accelerated away from Jupiter. These electrons should be observable as narrow electron beams in the middle magnetosphere, in accordance with the principles of […]


Continue.. Auroral Acceleration Generates Electron Beams in Jupiter’s Middle Magnetosphere