Results 11 to 20 of about 648,849 (327)

Simulations in Early-Universe Theory

open access: yesProceedings of XXIIIrd International Symposium on Lattice Field Theory — PoS(LAT2005), 2005
We give an impression of the type of results that have been obtained with numerical lattice simulations of field theory in the early universe.
Smit, Jan
openaire   +5 more sources

Early Universe models from Noncommutative Geometry [PDF]

open access: green, 2009
We investigate cosmological predictions on the early universe based on the noncommutative geometry models of gravity coupled to matter. Using the renormalization group analysis for the Standard Model with right handed neutrinos and Majorana mass terms ...
Matilde Marcolli, E. Pierpaoli
openalex   +5 more sources

Bulk Scale Factor at Very Early Universe [PDF]

open access: green, 2010
In this paper we propose a higher dimensional Cosmology based on FRW model and brane-world scenario. We consider the warp factor in the brane-world scenario as a scale factor in 5-dimensional generalized FRW metric, which is called as bulk scale factor ...
M. Mohsenzadeh, E. Yusofi
openalex   +4 more sources

Magnetogenesis from a rotating scalar: à la scalar chiral magnetic effect

open access: yesJournal of High Energy Physics, 2020
The chiral magnetic effect (CME) is a phenomenon in which an electric current is induced parallel to an external magnetic field in the presence of chiral asymmetry in a fermionic system.
Kohei Kamada, Chang Sub Shin
doaj   +1 more source

Blazars in the early Universe [PDF]

open access: yes, 2011
We investigate the relative occurrence of radio--loud and radio-quiet quasars in the first billion years of the Universe, powered by black holes heavier than one billion solar masses. We consider the sample of high-redshfit blazars detected in the hard X-
Abdo   +48 more
core   +1 more source

Massive first star binaries as new tools for Galactic archaeology [PDF]

open access: yesEPJ Web of Conferences, 2022
Binary systems are important probes of the origin of stars with peculiar chemical features through the interactions between two stars. We have studied the evolution of a metal-free massive binary after the collision of the supernova ejecta with a low ...
Suda Takuma   +4 more
doaj   +1 more source

Clustering Fossils from the Early Universe [PDF]

open access: yes, 2012
Many inflationary theories introduce new scalar, vector, or tensor degrees of freedom that may then affect the generation of primordial density perturbations.
Jeong, Donghui, Kamionkowski, Marc
core   +2 more sources

Implication of pulsar timing array experiments on cosmological gravitational wave detection

open access: yesAAPPS 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
doaj   +1 more source

Precursors of Supernovae from Mass Eruption: Prospects for Early Warning of Nearby Core-collapse Supernovae

open access: yesThe 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
doaj   +1 more source

The cosmic microwave background radiation power spectrum as a random bit generator for symmetric- and asymmetric-key cryptography

open access: yesHeliyon, 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
doaj   +1 more source

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