July 29, 2025 – Kavli Institute Pre-Print Publications

Primordial Power Spectrum and Bispectrum from Lattice Simulations of Axion-U(1) Inflation

Posted by klaurent July 29, 2025Tokyo

Kavli Affiliate: Eiichiro Komatsu | Summary:We present primordial non-Gaussianity predictions from a new high-precision code for simulating axion-U(1) inflation on a discrete lattice. We measure the primordial scalar curvature power spectrum and bispectrum from our simulations, determining their dependence on both scale and axion-gauge coupling strength. Both the gauge-sourced power spectrum and the bispectrum exhibit […]

Continue..

MUSEQuBES: The Column Density, Covering Fraction, Mass, and Environmental Dependence of Cool HI Gas Around Low-Redshift Galaxies

Posted by klaurent July 29, 2025Chicago

Kavli Affiliate: Hsiaowen Chen |Summary:We investigate cool HI gas traced by Lyman series absorption around 256 galaxies at z ~ 0.48 (median stellar mass, log10(M*/Msun) = 8.7) using 15 background quasars (median impact parameter, D = 140 pkpc), as part of the MUSE Quasar-fields Blind Emitters Survey (MUSEQuBES). We find that the HI column density […]

Continue..

Enabling Early Transient Discovery in LSST via Difference Imaging with DECam

Posted by klaurent July 29, 2025Stanford

Kavli Affiliate: Steven Kahn | Summary:We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), using archival images from the Dark Energy Camera (DECam) as templates for difference imaging. We apply this pipeline to the recently released Data Preview 1 (DP1; […]

Continue..

Enabling Early Transient Discovery in LSST via Difference Imaging with DECam

Posted by klaurent July 29, 2025Stanford

Kavli Affiliate: Steven M. Kahn | First 5 Authors: Yize Dong, Yize Dong, , , | Summary: We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), using archival images from the Dark Energy Camera (DECam) as templates for difference imaging. […]

Continue..

Heterogeneous responses to embryonic critical period perturbations within the Drosophila larval locomotor circuit.

Posted by dbos July 29, 2025August 11, 2025Hopkins

Kavli Affiliate: Michael Miller | Authors: Niklas Krick, Jacob Davies, Bramwell Coulson, Daniel Sobrido-Camean, Michael Miller, Matthew C.W. Oswald, Aref Arzan Zarin, Richard Baines and Matthias Landgraf | Summary: As developing neural circuits become functional, they undergo a phase of heightened plasticity that facilitates network tuning in response to intrinsic and/or extrinsic stimuli. These developmental […]

Continue..

Temporal and Spatial Scales of Human Resting-state Cortical Activity Across the Lifespan

Posted by dbos July 29, 2025August 11, 2025Hopkins

Kavli Affiliate: Robert Edwards | Authors: Susanna R Grigson, George Bouras, Bhavya Papudeshi, Vijini Mallawaarachchi, Michael J Roach, Przemyslaw Decewicz and Robert A Edwards | Summary: Sensorimotor and cognitive abilities undergo substantial changes throughout the human lifespan, but the corresponding changes in the functional properties of cortical networks remain poorly understood. This can be studied […]

Continue..

Global anomalies in $6D$ gauged supergravities

Posted by klaurent July 29, 2025Tokyo

Kavli Affiliate: Yuji Tachikawa | Summary:There exists a rare class of R-symmetry gauged $N=(1,0)$ supergravities in six dimensions with gauge group $Gtimes U(1)_R$, where $G$ is semisimple with rank greater than one, and the number of tensor multiplets $n_T=1$, which are free from all local anomalies. We find new members of this family, in which […]

Continue..

Energy Extraction From the Kerr-Bertotti-Robinson Black Hole via Magnetic Reconnection under Circular Plasma and Plunging Plasma

Posted by klaurent July 29, 2025Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Xiao-Xiong Zeng, Xiao-Xiong Zeng, , , | Summary: Recently, a class of exact solutions describing rotating black holes immersed in a uniform magnetic field has been proposed, and various properties of such black holes remain unclear. This paper aims to explore how to extract energy based on […]

Continue..

Energy Extraction From the Kerr-Bertotti-Robinson Black Hole via Magnetic Reconnection under Circular Plasma and Plunging Plasma

Posted by klaurent July 29, 2025August 11, 2025Peking

Continue..

Ultraviolet photon production rates of the first stars: Impact on the He II $λ$ 1640 Å emission line from primordial star clusters and the 21-cm signal from cosmic dawn

Posted by klaurent July 29, 2025Cambridge

Kavli Affiliate: George Efstathiou | Summary:The first stars, the chemically pristine Population III, likely played an important role in heating the intergalactic medium during the epoch of cosmic dawn. The very high effective temperatures ($sim 10^5$ K) predicted for the most massive Population III stars could also give rise to tell-tale signatures in the emission-line […]

Continue..