9 papers
HPSD: Hybrid-Policy Self-Distillation for Text-Image-to-Video Diffusion Models
Jiazi Bu, Pengyang Ling, Yujie Zhou +10
Text-Image-to-Video (TI2V) models are an emerging unified architecture, where a single model simultaneously supports text-to-video (T2V) and image-to-video (I2V) generation. Given…
Ringdown waves from hairy black holes
Ariadna Uxue Palomino Ylla, Kosuke Makino, Akane Tanaka +2
We study how quasinormal-mode frequencies may encode information about the effective matter source responsible for black-hole hair. Using the established eikonal correspondence bet…
Numerical simulation of type II primordial black hole formation
Koichiro Uehara, Albert EscrivÃ, Tomohiro Harada +2
This study investigates the formation of type II primordial black holes (PBHs) resulting from extremely large amplitudes of initial fluctuations in a radiation-dominated universe.…
Simulations of Ellipsoidal Primordial Black Hole Formation
Albert EscrivÃ, Chul-Moon Yoo
We perform relativistic numerical simulations to study primordial black hole (PBH) formation from the collapse of adiabatic super-horizon non-spherical perturbations generate…
Non-spherical effects on the mass function of Primordial Black Holes
Albert EscrivÃ, Chul-Moon Yoo
In this letter, we investigate the impact of non-spherical effects on the Primordial Black Hole mass function, based on the ellipticity-dependent threshold calculated by performing…
Primordial black hole formation from a type II perturbation in the absence and presence of pressure
Koichiro Uehara, Albert EscrivÃ, Tomohiro Harada +2
We investigate primordial black holes (PBHs) formed from extremely large amplitudes of primordial curvature fluctuations, classified as type II. Type II fluctuations differ from ty…