Results 41 to 50 of about 176,413 (293)
Novel Optoelectronic Reconfigurable Transistors Based on Graphene/VO<sub>2</sub> Heterojunction for Efficient Neuromorphic Perception, Computation, and Storage. [PDF]
Adv Sci (Weinh)A novel optoelectronic reconfigurable neuromorphic transistor based on a graphene/VO2 heterojunction with inserted Au electrodes is proposed. It exhibits broad‐spectrum self‐powered photodetection capability ranging from 365 to 940 nm. Through bias control and electrode sizing strategies, multiple functions for switch, synapse, and storage are achieved,
Chen D +10 more
europepmc +2 more sources
Probability for primordial black holes [PDF]
Physical Review D, 1995 16 pages, LaTeX, accepted for publication in Phys. Rev. D; we have added brief remarks on the generality of our results and on the validity of the semiclassical ...
Bousso, R., Hawking, S. W.
openaire +3 more sources
Compact Binary Merger Rate in Dark-matter Spikes
The Astrophysical Journal, 2023 Today, the existence of supermassive black holes (SMBHs) in the center of galactic halos is almost confirmed. An extremely dense region referred to as dark-matter spike is expected to form around central SMBHs as they grow and evolve adiabatically.
Saeed Fakhry +4 more
doaj +1 more source
Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events
SciPost Physics Proceedings, 2023 The best-motivated scenario for a sizable primordial black hole (PBH) contribution to the LIGO/Virgo binary black hole mergers invokes the QCD phase transition, which naturally enhances the probability to form PBH with masses of stellar scale.
Joaquim Iguaz Juan
doaj +1 more source
Non-gaussianities for primordial black hole formation [PDF]
, 2021 We analyze primordial non-gaussianities in presence of an ultra-slow phase during the inflationary dynamics, focusing on scenarios relevant for the production of primordial black holes.
M. Taoso, A. Urbano
semanticscholar +1 more source
Primordial black hole formation in nonminimal curvaton scenarios [PDF]
Physical Review D, 2021 In the curvaton scenario, the curvature perturbation is generated after inflation at the curvaton decay, which may have a prominent non-Gaussian effect. For a model with a non-trivial kinetic term, an enhanced curvature perturbation on a small scale can ...
Shi Pi, M. Sasaki
semanticscholar +1 more source
Spin of primordial black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 JCAP version.
Mirbabayi, Mehrdad +2 more
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GW190521 Mass Gap Event and the Primordial Black Hole Scenario.
Physical Review Letters, 2021 The LIGO/Virgo Collaboration has recently observed GW190521, the first binary black hole merger with at least the primary component mass in the mass gap predicted by the pair-instability supernova theory.
V. De Luca +4 more
semanticscholar +1 more source
Primordial Black Hole Formation in Non-Standard Post-Inflationary Epochs
Galaxies, 2023 When large overdensities gravitationally collapse in the early universe, they lead to primordial black holes (PBH). Depending on the exact model of inflation leading to necessary large perturbations at scales much smaller than scales probed at the Cosmic
Sukannya Bhattacharya
doaj +1 more source
Gravitational wave constraints on the primordial black hole dominated early universe [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We calculate the gravitational waves (GWs) induced by the density fluctuations due to the inhomogeneous distribution of primordial black holes (PBHs) in the case where PBHs eventually dominate and reheat the universe by Hawking evaporation.
Guillem Domènech +2 more
semanticscholar +1 more source