87 citations · 200 across the 14 of their papers we have counts for
15 papers
Simulation of PBH formation in a matter-dominated universe
Chul-Moon Yoo, Albert Escrivà, Tomohiro Harada +1
We investigate primordial black hole (PBH) formation during an early matter-dominated era using fully nonlinear numerical relativity. The initial condition is set by a functional f…
Primordial Asymmetries, Primordial Equation of State & Primordial Black Holes
Maël Gonin, Julien Froustey, Albert Escrivà +3
We study the thermal history of the primordial Universe in the presence of non-zero lepton and baryon asymmetries. Considering different scenarios, we determine the equation of sta…
COSMOS: A numerical relativity code specialized for PBH formation
Chul-Moon Yoo, Hirotada Okawa, Albert Escrivà +7
Primordial black holes (PBHs) are black holes generated in the early universe without having gone through stellar evolution. In the standard formation process, PBHs are formed from…
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…
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…
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…
Were you born in an aborted primordial black hole?
Emilie Despontin, Sebastien Clesse, Albert Escrivà +1
We propose a mechanism of electroweak baryogenesis based on the Standard Model and explaining the coincidence between the baryon and Dark Matter (DM) densities. Large curvature flu…
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…
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…
Formation of trapped vacuum bubbles during inflation, and consequences for PBH scenarios
Albert Escrivà, Vicente Atal, Jaume Garriga
A class of inflationary scenarios for primordial black hole (PBH) formation include a small barrier in the slope of the potential. There, the inflaton slows down, generating an enh…
Primordial Black Holes
Albert Escrivà, Florian Kuhnel, Yuichiro Tada
Aspects of primordial black holes, i.e. black holes formed in the early Universe, are reviewed. Special emphasis is put on their formation, their role as dark matter candidates and…
Static properties of two linearly coupled discrete circuits
Albert Escrivà, Andrea Richaud, Bruno Juliá-Díaz +1
Bosonic two-ring ladders constitute an important class of atomtronic circuits, where coherent current flows not only can offer a new insight into many-body physics, but also can pl…