3 papers
astro-ph.GA2026
Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
Dongsu Bak, Jae-Weon Lee
We explore a possible mechanism for the formation of supermassive black hole (SMBH) seeds at the centers of ultralight dark matter (ULDM) halos in the early Universe. We investigat…
quant-ph2025
Machine Learns Quantum Complexity
Dongsu Bak, Su-Hyeong Kim, Sangnam Park +1
We study how a machine based on deep learning algorithms learns Krylov spread complexity in quantum systems with N x N random Hamiltonians drawn from the Gaussian unitary ensemble.…
astro-ph.GA2025
Weak-lensing Mass Reconstruction of Galaxy Clusters with a Convolutional Neural Network -- II: Application to Next-Generation Wide-Field Surveys
Sangjun Cha, M. James Jee, Sungwook E. Hong +3
Traditional weak-lensing mass reconstruction techniques suffer from various artifacts, including noise amplification and the mass-sheet degeneracy. In Hong et al. (2021), we demons…