Results 21 to 30 of about 20,263 (249)
PRIMORDIAL BLACK HOLE FORMATION FROM INFLATON [PDF]
International Journal of Modern Physics D, 2000 Measurements of the distances to SNe Ia have produced strong evidence that the expansion of the Universe is really accelarating, implying the existence of a nearly uniform component of dark energy with the simplest explanation as a cosmological constant.
Xin Meng, Bin Wang, Shiping Feng
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$ν$-Inflaton Dark Matter [PDF]
Journal of High Energy Physics, 2018 Abstract We present a unified model where the same scalar field can drive inflation and account for the present dark matter abundance. This scenario is based on the incomplete decay of the inflaton field into right-handed neutrino pairs, which is accomplished by imposing a discrete interchange symmetry on the inflaton and on two of
António Torres Manso, João G. Rosa
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Inflaton clusters and inflaton stars [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 In a broad class of scenarios, inflation is followed by an extended era of matter-dominated expansion during which the inflaton condensate is nonrelativistic on subhorizon scales. During this phase density perturbations grow to the point of nonlinearity and collapse into bound structures.
Niemeyer, Jens C., Easther, Richard
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Supersymmetric ν-inflaton Dark Matter [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 Abstract We present the supersymmetric extension of the unified model for inflation and Dark Matter studied in ref. [1]. The scenario is based on the incomplete decay of the inflaton field into right-handed (s)neutrino pairs. By imposing a discrete interchange symmetry on the inflaton and the right-handed (s)neutrinos, one can ensure the
Bastero-Gil, Mar, Manso, António Torres
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Universe, 2023 We aim to search for axion-like particles in the eV mass range using a variable-angle stimulated resonance photon collider (SRPC) with three intense laser beams.
Takumi Hasada +2 more
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Hunting inflatons at FASER [PDF]
Physical Review D, 2021 We explore a possibility that an inflaton, which drives the cosmological inflation in the early Universe, can be detected by the recently approved FASER at the High-Luminosity LHC (HL-LHC). We consider nonminimal quartic inflation scenario in the minimal U(1)$_X$ extension of the Standard Model (SM) with the classical conformal invariance, where the ...
Nobuchika Okada, Digesh Raut
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Universe, 2023 Toward the systematic search for axion-like particles in the eV mass range, we proposed the concept of a stimulated resonant photon collider by focusing three short pulse lasers into a vacuum.
Fumiya Ishibashi +7 more
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Universe, 2021 We explore a possibility to detect dark components in the Universe via stimulated photon–photon collisions by focusing two-frequency coherent electromagnetic fields in a vacuum.
Kensuke Homma +2 more
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Universe, 2022 We propose a three-beam stimulated resonant photon collider with focused laser fields in order to directly produce an axion-like particle (ALP) with the two beams and to stimulate its decay by the remaining one.
Kensuke Homma +3 more
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Quantum inflaton dynamics [PDF]
Physical Review D, 1998 We show that the quantum dynamics of a real scalar field for a large class of potentials in the symmetric Gaussian state, where the nonperturbative quantum contributions are taken into account, can be described equivalently by a two-dimensional nonlinear dynamical system with a definite angular momentum (U(1) charge of a complex theory).
Bak, Dongsu +4 more
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