Mergers may not be the main channel for galaxy stellar mass growth at redshift $zgtrsim5$: Predictions from cosmological hierarchical models and simulations

Posted by klaurent Peking

Kavli Affiliate: Yingjie Peng | Summary:Mergers are a crucial channel of galaxy growth, but their role relative to star formation remains uncertain at high redshift. Here we investigate merger rates and merger-driven stellar mass assembly for galaxies with stellar mass $M_star gtrsim 10^8 , rm M_odot$ at $zsimeq 5-11$, by combining complementary theoretical approaches within […]


Continue.. Mergers may not be the main channel for galaxy stellar mass growth at redshift $zgtrsim5$: Predictions from cosmological hierarchical models and simulations

SchemaWeaver: Accelerating On-Device Mobile Agentic AI via Schema-Guided Parallel LLM Decoding

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Large language models (LLMs) on mobile devices can act as agents that call external software tools to complete complex tasks, but the major challenge of supporting on-device mobile agentic AI with LLMs is the long latency of LLM tool calling on mobile devices. In particular, the decode phase is the main […]


Continue.. SchemaWeaver: Accelerating On-Device Mobile Agentic AI via Schema-Guided Parallel LLM Decoding

MeV dark matter decay forecasts for the COSI mission

Posted by klaurent Tokyo

Kavli Affiliate: Shigeki Matsumoto | Summary:The decay of dark matter (DM) is a generic prediction of many particle physics models, producing distinctive monochromatic signatures in environments such as the Galactic halo. Searches for decaying DM in the elusive ‘MeV gap’ have remained conspicuously under-explored, despite well-motivated models including axion-like particles, sterile neutrinos, and hidden-sector scenarios […]


Continue.. MeV dark matter decay forecasts for the COSI mission

Revealing topological protection through unprotected operations in a Majorana parity qubit

Posted by klaurent Delft

Kavli Affiliate: Michael Wimmer | Summary:A recent experiment reported coherent parity oscillations between minimal Kitaev chains, demonstrating a Majorana parity qubit (arXiv:2607.09511). Operations on this qubit are controlled by coupling two Kitaev chains and are intrinsically unprotected against noise in the coupling strength. Here we show how the exponential protection in the underlying chains can […]


Continue.. Revealing topological protection through unprotected operations in a Majorana parity qubit

Solvent Fluctuations Enable Photoionization of Aqueous Nitrite Microdroplets

Posted by klaurent Berkeley

Kavli Affiliate: David T. Limmer | Summary:Nitrite photochemistry in atmospheric aerosols and natural waters is a major source of hydroxyl radicals and reactive nitrogen oxides. Contrary to the prevailing view that in the environment aqueous nitrite photochemistry proceeds exclusively through photoexcitation followed by homolytic bond cleavage, we show that visible light directly ionizes aqueous nitrite […]


Continue.. Solvent Fluctuations Enable Photoionization of Aqueous Nitrite Microdroplets

AUGUstus: Autonomous Driving VLA Model with Unified Generation and Understanding

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Vision-language-action (VLA) models show strong potential for end-to-end autonomous driving by leveraging world knowledge and understanding to excel in long-tail scenarios. However, current VLAs have two limitations: 1) Degeneration into vision-action (VA) models. For low latency, regression/flow-based methods directly generate actions but underuse VLM understanding, causing unsafe, unexplainable actions. 2) Autoregressive […]


Continue.. AUGUstus: Autonomous Driving VLA Model with Unified Generation and Understanding

Self-Interacting Dark Matter: From Particle Physics Theories to Structure Formation Simulations

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:We present a unified theory-to-simulation framework for self-interacting dark matter (SIDM), combining a self-contained introduction to its particle-physics foundations and representative benchmark models with an explicit, systematic mapping to simulation inputs and validated numerical implementations in the moving-mesh code AREPO-2. We characterize representative elementary and composite dark-sector models through their […]


Continue.. Self-Interacting Dark Matter: From Particle Physics Theories to Structure Formation Simulations

Emergent low-energy thermodynamics and universal $B/T$ scaling in $α$-RuCl$_3$

Posted by klaurent Cornell

Kavli Affiliate: Brad Ramshaw | Summary:Quantum spin liquids are exotic states of matter in which strongly interacting spins remain disordered down to zero temperature and host fractionalized excitations. This has motivated an extensive search for their realization in materials. Among candidate systems, $α$-RuCl$_3$ has drawn particular attention as a platform for the quantum spin liquid […]


Continue.. Emergent low-energy thermodynamics and universal $B/T$ scaling in $α$-RuCl$_3$

Quantum Ising transition on the Cayley tree: boundary criticality, universality, and an effective Bethe line

Posted by klaurent Delft

Kavli Affiliate: Natalia Chepiga | Summary:We investigate quantum criticality in the transverse-field Ising model on finite Cayley trees and demonstrate that their extensive boundary fundamentally changes the nature of the quantum phase transition compared with the infinite, boundary-free Bethe lattice. Using tree tensor-network simulations for systems with up to $N=12286$ sites, we identify a boundary-driven […]


Continue.. Quantum Ising transition on the Cayley tree: boundary criticality, universality, and an effective Bethe line

An updated view of Jupiter’s UV main auroral emission: large-scale analysis of UV and particle data from Juno’s first 60 orbits

Posted by klaurent MIT

Kavli Affiliate: George Clark | Summary:The properties and origins of Jupiter’s UV main auroral emission are, at present, not yet fully understood, particularly the extent to which its two distinct zones, the Zone-I and Zone-II aurora, originate from a common source. In this work, remote-sensing and in-situ data from the Juno spacecraft are used to […]


Continue.. An updated view of Jupiter’s UV main auroral emission: large-scale analysis of UV and particle data from Juno’s first 60 orbits