Results 21 to 30 of about 23,762 (159)
Noncommutativity in the early universe [PDF]
International Journal of Modern Physics D, 2017 In the present work, we study the noncommutative version of a quantum cosmology model. The model has a Friedmann–Robertson–Walker (FRW) geometry, the matter content is a radiative perfect fluid and the spatial sections have zero constant curvature. In this model, the scale factor takes values in a bounded domain.
Oliveira-Neto, G. +3 more
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Implication of pulsar timing array experiments on cosmological gravitational wave detection
AAPPS Bulletin, 2021 Gravitational waves provide a new probe of the Universe which can reveal a number of cosmological and astrophysical phenomena that cannot be observed by electromagnetic waves.
Jun’ichi Yokoyama
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The Astrophysical Journal, 2023 Recent observations of a large fraction of Type II supernovae (SNe) show traces of dense circumstellar medium (CSM) very close to the progenitor star. If this CSM is created by eruptive mass loss several months before core collapse, the eruption itself ...
Daichi Tsuna +2 more
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Neutrino lasing in the early Universe [PDF]
Physical Review Letters, 1993 7 pages, 3 figures included as uuencoded file, CITA/93 ...
Kaiser, N. +2 more
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Heliyon, 2017 In this note, the Cosmic Microwave Background (CMB) Radiation is shown to be capable of functioning as a Random Bit Generator, and constitutes an effectively infinite supply of truly random one-time pad values of arbitrary length.
Jeffrey S. Lee, Gerald B. Cleaver
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Black holes in the early Universe [PDF]
Reports on Progress in Physics, 2012 Reports on Progress in Physics, in ...
Volonteri, Marta, Bellovary, Jillian
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The holographic principle and the early universe [PDF]
Physics Letters B, 2005 A scenario is proposed in which the matter-antimatter asymmetry behaves like a seed for the inflationary phase of the universe. The mechanism which makes this scenario plausible is the holographic principle: this scheme is supported by a good prediction of the number of e-folds. It seems that such a mechanism can only work in the presence of a Hagedorn-
CANFORA, Fabrizio, VILASI, Gaetano
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Protostar Formation in the Early Universe [PDF]
Science, 2008 The nature of the first generation of stars in the universe remains largely unknown. Observations imply the existence of massive primordial stars early in the history of the universe, and the standard theory for the growth of cosmic structure predicts that structures grow hierarchically through gravitational instability.
Yoshida, N., Omukai, K., Hernquist, L.
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Horndeski model in nonlinearly realized supergravity
Journal of High Energy Physics, 2019 We construct the Horndeski Lagrangian within non-linearly realized super- gravity. We will show that the bosonic part of the Horndeski Lagrangian can be realized. Gravitino naturally couples to Horndeski sector in a super-covariant way.
Yusuke Yamada, Jun’ichi Yokoyama
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Higgs as heavy-lifted physics during inflation
Journal of High Energy Physics, 2019 Signals of heavy particle production during inflation are encoded as nonanalytic momentum scaling in primordial non-Gaussianity. These non-analytic signatures can be sourced by Standard Model particles with a modified Higgs scale uplifted by the slow ...
Yi-Peng Wu
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