23 citations · 80 across the 12 of their papers we have counts for
13 papers
Long-term 3+1 simulations of primordial black hole formation during radiation domination
Zhuan Ning, Rong-Gen Cai, Shao-Jiang Wang +1
We develop an efficient three-dimensional numerical-relativity framework for primordial black-hole (PBH) formation from superhorizon curvature perturbations in a radiation-dominate…
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…
Primordial black hole formation from a type II perturbation in the absence and presence of pressure
Koichiro Uehara, Albert Escrivà, 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…
Super-critical primordial black hole formation via delayed first-order electroweak phase transition
Katsuya Hashino, Shinya Kanemura, Tomo Takahashi +2
The delay of the first-order electroweak phase transitions (EWPT) may lead to the emergence of baby universes inside wormhole structures due to the large vacuum energy density in f…
Primordial Black Hole Formation from Type II Fluctuations with Primordial Non-Gaussianity
Masaaki Shimada, Albert Escrivá, Daiki Saito +2
This study investigates the formation of primordial black holes (PBHs) resulting from the collapse of adiabatic fluctuations with large amplitudes and non-Gaussianity. Ref. \cite{U…
Simulations of Ellipsoidal Primordial Black Hole Formation
Albert Escrivà, 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 Escrivà, 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 nonspherical density profile with a misaligned deformation tensor
Chul-Moon Yoo
We perform the numerical simulation of primordial black hole formation from a nonspherical profile of the initial curvature perturbation . We consider the background expanding u…
The LISA forecast on a smooth crossover beyond the Standard Model through the scalar-induced gravitational waves
Albert Escrivà, Ryoto Inui, Yuichiro Tada +1
Supposing the Laser Interferometer Space Antenna (LISA) gravitational wave (GW) detector, we exhibit the detectability of a hypothetical smooth crossover in the early universe beyo…
Numerical simulation of type II primordial black hole formation
Koichiro Uehara, Albert Escrivà, 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.…
Primordial Black Holes and Induced Gravitational Waves from a Smooth Crossover beyond Standard Model
Albert Escrivà, Yuichiro Tada, Chul-Moon Yoo
Gravitational waves (GWs) induced by primordial fluctuations can be affected by the modification of the sound speed and the equation of state parameter once the c…
Turbulence on open string worldsheets under non-integrable boundary conditions
Takaaki Ishii, Ryo Kitaku, Keiju Murata +1
We demonstrate the turbulent dynamics of the Nambu-Goto open string in the AdS3 spacetime. While the motion of a classical closed string in AdS is known to be integrable, the integ…
Primordial Black Hole formation from overlapping cosmological fluctuations
Albert Escrivà, Chul-Moon Yoo
We consider the formation of primordial black holes (PBHs), during the radiation-dominated Universe, generated from the collapse of super-horizon curvature fluctuations that are ov…