The impact of source and survey modelling on the connection between [O III] emitters and Ly $α$ forest transmission at z ~ 6

Posted by klaurent Cambridge

Kavli Affiliate: Martin Haehnelt | Summary:James Webb Space Telescope (JWST) surveys of [O III]-emitting galaxies are offering fresh insight into the connection between galaxies and the intergalactic medium at redshift z ~ 6. Recent measurements of the cross-correlation between [O III]-emitting galaxies and Ly $α$ forest transmission present an apparent challenge to numerical models. Here […]


Continue.. The impact of source and survey modelling on the connection between [O III] emitters and Ly $α$ forest transmission at z ~ 6

Quantum Matter Makes Lightcones Quantum

Posted by klaurent Tokyo

Kavli Affiliate: Misao Sasaki | Summary:In gravitational physics, matter does not merely move within spacetime; it also determines the light cones that define causal relations. What happens when the matter that determines these light cones is itself in a quantum state? We address this question in a controlled low-energy setting: a massless scalar field propagating […]


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Quantum Matter Makes Lightcones Quantum

Posted by klaurent Tokyo

Kavli Affiliate: Misao Sasaki | Summary:In gravitational physics, matter does not merely move within spacetime; it also determines the light cones that define causal relations. What happens when the matter that determines these light cones is itself in a quantum state? We address this question in a controlled low-energy setting: a massless scalar field propagating […]


Continue.. Quantum Matter Makes Lightcones Quantum

Reversible Superdense Ordering of Tetragonal Lithium in a Layered Material

Posted by klaurent Cornell

Kavli Affiliate: Lynden Archer | Summary:Understanding lithium (Li) ordering and dynamics is foundational in energy storage. X-ray based experimental methods do not simultaneously provide atomic structure information together with chemical composition and local bonding information for lithium in solids. Here we employ scanning transmission electron microscopy (STEM) and combine imaging, spectroscopy, and diffraction within a […]


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Bionic Human-Motion Style Transfer for Physically Executable Whole-Body Control of Humanoid Robots

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Expressive whole-body motion is important for humanoid robots operating in human environments, where robots are expected to move stably while presenting readable and adjustable body behaviors. However, most expressive motions are still obtained from fixed demonstrations or manually designed scripts, making it difficult to reuse a demonstrated style across different motion […]


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The UV Side of Little Red Dots: Red, Compact, and Iron-Enhanced Rest-UV Emission with a Strong Downturn around Ly$α$

Posted by klaurent Peking

Kavli Affiliate: Kohei Inayoshi | Summary:Little Red Dots (LRDs) are candidates for growing supermassive black holes newly discovered by the James Webb Space Telescope (JWST), characterized by compact rest-optical morphology, V-shaped spectra, and broad Hydrogen Balmer lines. While recently proposed BH-star/envelope models have made progress in explaining their optical features, their rest-UV emission, which is […]


Continue.. The UV Side of Little Red Dots: Red, Compact, and Iron-Enhanced Rest-UV Emission with a Strong Downturn around Ly$α$

Human2Humanoid: Physics-Aware Cross-Morphology Motion Retargeting for Humanoid Robots

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Retargeting human motion to humanoid robots is critical for teleoperation, imitation learning and human-robot interaction. However, it remains challenging because of substantial morphological discrepancies between humans and robots, including differences in skeletal topology, limb proportions and degrees of freedom, as well as the scarcity of paired motion data. This paper presents […]


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Microscopic derivation of the microstretch theory for carbon nanotubes

Posted by klaurent UCAS

Kavli Affiliate: Mamoru Matsuo | Summary:Twisted carbon nanotubes support phonons involving not only torsion, naturally associated with microrotation, but also radial breathing, which requires a scalar stretch degree of freedom. We derive an effective microstretch theory for these modes starting from nonlinear elasticity on a cylindrical surface. By linearizing the equation of motion around a […]


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Reduced incidence of little red dots at z < 3 based on number density and halo mass evolution

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:An intriguing puzzle in extragalactic astronomy is the scarcity of Little Red Dots (LRDs) at $z < 3$, compared to their higher abundance at earlier cosmic epochs. To investigate this, we measure the overdensity for 98 specpically confirmed LRDs at $3<z<7$, and find that these LRDs predominantly reside in under-dense […]


Continue.. Reduced incidence of little red dots at z < 3 based on number density and halo mass evolution

Reduced Incidence of Little Red Dots at z < 3 from Number Density and Halo Mass Evolution

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:An intriguing puzzle in extragalactic astronomy is the scarcity of Little Red Dots (LRDs) at $z < 3$, compared to their higher abundance at earlier cosmic epochs. To investigate this, we measure the overdensity for 98 specpically confirmed LRDs at $3<z<7$, and find that these LRDs predominantly reside in under-dense […]


Continue.. Reduced Incidence of Little Red Dots at z < 3 from Number Density and Halo Mass Evolution