D2E: Scaling Vision-Action Pretraining on Desktop Data for Transfer to Embodied AI

Posted by klaurent Stanford

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Large language models leverage internet-scale text data, yet embodied AI remains constrained by the prohibitive costs of physical trajectory collection. Desktop environments — particularly gaming — offer a compelling alternative: they provide rich sensorimotor interactions at scale while maintaining the structured observation-action […]


Continue.. D2E: Scaling Vision-Action Pretraining on Desktop Data for Transfer to Embodied AI

Ultracold Neutron Guide-Coating Facility at U.Winnipeg

Posted by klaurent Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: T. Hepworth, T. Hepworth, , , | Summary: We report the construction and commissioning of a new ultracold neutron (UCN) guide-coating facility at the University of Winnipeg. The facility employs pulsed laser deposition (PLD) to produce diamond-like carbon (DLC) coatings on cylindrical UCN guides up to 1 […]


Continue.. Ultracold Neutron Guide-Coating Facility at U.Winnipeg

Everyone wants something better than $Λ$CDM

Posted by klaurent Chicago

Kavli Affiliate: Michael Turner | Summary:The current cosmological paradigm, $Λ$CDM, is characterized its expansive description of the history of the Universe, its deep connections to particle physics and the large amounts of data that support it. Nonetheless, $Λ$CDM’s critics argue that it has been falsified or must be discarded for various reasons. Critics and boosters […]


Continue.. Everyone wants something better than $Λ$CDM

Everyone wants something better than $Λ$CDM

Posted by klaurent Chicago

Kavli Affiliate: Michael S. Turner | First 5 Authors: Michael S. Turner, Michael S. Turner, , , | Summary: The current cosmological paradigm, $Lambda$CDM, is characterized its expansive description of the history of the Universe, its deep connections to particle physics and the large amounts of data that support it. Nonetheless, $Lambda$CDM’s critics argue that […]


Continue.. Everyone wants something better than $Λ$CDM

Imaging Nanoscale Carrier, Thermal, and Structural Dynamics with Time-Resolved and Ultrafast Electron Energy-Loss Spectroscopy

Posted by klaurent Caltech

Kavli Affiliate: Scott K. Cushing | Summary:Time-resolved and ultrafast electron energy-loss spectroscopy (EELS) is an emerging technique for measuring photoexcited carriers, lattice dynamics, and near-fields across femtosecond to microsecond timescales. When performed in either a specialized scanning transmission electron microscope or ultrafast electron microscope (UEM), time-resolved and ultrafast EELS can directly image charge carriers, lattice […]


Continue.. Imaging Nanoscale Carrier, Thermal, and Structural Dynamics with Time-Resolved and Ultrafast Electron Energy-Loss Spectroscopy

First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2

Posted by klaurent MIT

Kavli Affiliate: Herman Marshall | Summary:We report the first polarimetric results of the neutron star (NS) low-mass X-ray binary (LMXB) Z-source GX 17+2 using the Imaging X-ray Polarimetry Explorer (IXPE) and the Very Large Array (VLA). We find that the X-ray source was polarized at PD = 1.9 +/- 0.3 % (1-sigma errors) with a […]


Continue.. First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2

First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2

Posted by klaurent MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Unnati Kashyap, Unnati Kashyap, , , | Summary: We report the first polarimetric results of the neutron star (NS) low-mass X-ray binary (LMXB) Z-source GX 17+2 using the Imaging X-ray Polarimetry Explorer (IXPE) and the Very Large Array (VLA). We find that the X-ray source was […]


Continue.. First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2

Tunable electronic energy level alignment and exciton diversity in organic-inorganic van der Waals heterostructures

Posted by klaurent Berkeley

Kavli Affiliate: Jeffrey Neaton | Summary:van der Waals stacking of two-dimensional (2D) materials offers a powerful platform for engineering material interfaces with tailored electronic and optical properties. While most van der Waals multilayers have featured inorganic monolayers, incorporating molecular monolayers introduces new degrees of tunability and functionality. Here, we investigate hybrid bilayers composed of atomically […]


Continue.. Tunable electronic energy level alignment and exciton diversity in organic-inorganic van der Waals heterostructures

Tunable electronic energy level alignment and exciton diversity in organic-inorganic van der Waals heterostructures

Posted by klaurent Berkeley

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Aurélie Champagne, Aurélie Champagne, , , | Summary: van der Waals stacking of two-dimensional (2D) materials offers a powerful platform for engineering material interfaces with tailored electronic and optical properties. While most van der Waals multilayers have featured inorganic monolayers, incorporating molecular monolayers introduces new degrees […]


Continue.. Tunable electronic energy level alignment and exciton diversity in organic-inorganic van der Waals heterostructures

MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies

Posted by klaurent Chicago

Kavli Affiliate: Alexander Ji | Summary:We study the stellar mass-iron metallicity relation of dwarf galaxies in the new high-resolution MEGATRON cosmological radiation-hydrodynamics simulations. These simulations model galaxy formation up to $zapprox8$ in a region that will collapse into a Milky-Way-like galaxy at $z=0$, while self-consistently tracking Population III and II (Pop.~III, Pop.~II) star formation, feedback […]


Continue.. MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies