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 | First 5 Authors: Wonseok Lee, Wonseok Lee, , , | 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 […]


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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 […]


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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 […]


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Self-interacting dark matter in the center of a Local Group dwarf galaxy and its satellites

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Thales A. Gutcke, Thales A. Gutcke, , , | Summary: We present a detailed comparison of a Local Group dwarf galaxy analogue evolved in two cosmological models: the standard $Lambda$CDM and a self-interacting dark matter (SIDM) model with a velocity-dependent cross-section. Both simulations are run with the […]


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

Posted by klaurent Chicago

Kavli Affiliate: Alexander P. Ji | First 5 Authors: Martin P. Rey, Martin P. Rey, , , | 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 […]


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CMT-Benchmark: A Benchmark for Condensed Matter Theory Built by Expert Researchers

Posted by klaurent Cornell

Kavli Affiliate: Debanjan Chowdhury | First 5 Authors: Haining Pan, Haining Pan, , , | Summary: Large language models (LLMs) have shown remarkable progress in coding and math problem-solving, but evaluation on advanced research-level problems in hard sciences remains scarce. To fill this gap, we present CMT-Benchmark, a dataset of 50 problems covering condensed matter […]


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EIGER VIII: First stars signatures in the connection between OI absorption and Galaxies in the Epoch of Reionization

Posted by klaurent MIT

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Jack Higginson, Jack Higginson, , , | Summary: We investigate the association between galaxies and neutral OI absorption systems at z~6, which trace metal-enriched gas during the epoch of reionization. We identify 40 galaxies across six quasar fields, residing in 15 overdensities within 300 kpc of […]


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The Cosmic Infrared Background Experiment-2: An Intensity Mapping Optimized Sounding-rocket Payload to Understand the Near-IR Extragalactic Background Light

Posted by klaurent Caltech

Kavli Affiliate: James J. Bock | First 5 Authors: , , , , | Summary: The background light produced by emission from all sources over cosmic history is a powerful diagnostic of structure formation and evolution. At near-infrared wavelengths, this extragalactic background light (EBL) is comprised of emission from galaxies stretching all the way back […]


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Character Mixing for Video Generation

Posted by klaurent UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Tingting Liao, Tingting Liao, , , | Summary: Imagine Mr. Bean stepping into Tom and Jerry–can we generate videos where characters interact naturally across different worlds? We study inter-character interaction in text-to-video generation, where the key challenge is to preserve each character’s identity and behaviors while enabling […]


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Optimization of velocity receptor transduction in CAR T cells

Posted by dbos Hopkins

Kavli Affiliate: Denis Wirtz | Authors: Frances S. Cho, John R. Huguenard and Jeanne T. Paz | Summary: Limited infiltration capacity significantly limits the effectiveness of chimeric antigen receptor (CAR) T cells for solid tumors. We have recently developed a large family of highly modular synthetic cytokine receptors termed velocity receptors (VRs), capable of binding […]


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