Results 271 to 280 of about 3,102,022 (309)

Cosmic evolution of nontopological solitons

Physical Review D, 1989
Nontopological solitons are stable field configurations which may be formed in a primordial phase transition. We study their cosmic evolution and examine the possibility that such objects could contribute significantly to the energy density of the Universe.
, Frieman, , Olinto, , Gleiser, , Alcock
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Evolution of the cosmic density matrix

Physical Review D, 1989
The dynamics of a reduced cosmic density matrix for minisuperspace is derived by projecting out inhomogeneous modes. This projection procedure roughly represents the intrinsic loss of information beyond the horizon of the local observer. Even if the wave function of the whole Universe exists, it will be unobservable and therefore should be projected ...
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Evolution of superconducting cosmic loops

Physical Review D, 1989
The evolution of superconducting cosmic loops is studied numerically. The back reaction of the electromagnetic radiation on the string and the current is considered. It is shown that the infinitely thin string does not lead to a ''renormalizable'' back reaction, contrary to the case of a pointlike charge.
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Cosmic Radiations and Evolution

Nature, 1929
THERE seem to be no sure grounds for believing that the penetrating radiations are uniformly distributed throughout space. If they are not, and if considerable variations in the strength of those reaching the earth have occurred in the past—possibly referable to translatory movements of the solar system—then serious effects upon organic evolution may ...
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How cosmic rays mediate the evolution of the interstellar medium

Monthly Notices of the Royal Astronomical Society, 2023
Christine M Simpson, Rüdiger Pakmor, Christoph Pfrommer   +2 more
exaly  

Quasars and the Intergalactic Medium at Cosmic Dawn

Annual Review of Astronomy and Astrophysics, 2023
Xiaohui Fan, Eduardo Bañados, Robert A Simcoe   +2 more
exaly  

Cosmic Evolution

The American Journal of Psychology, 1927
G. T. W. Patrick, John Elof Boodin
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Cosmic evolutions

The Physics Teacher, 1976
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Massive Black Holes: Evidence, Demographics and Cosmic Evolution

Progress in Mathematical Physics, 2021
R Genzel, Genzel Reinhard
exaly  

Cosmical Evolution

Scientific American, 1910
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