Results 11 to 20 of about 23,762 (159)

From the Early Universe to the Modern Universe [PDF]

Symmetry, 2020
The birth of the Universe, its dark components, and the next fundamental level of matter are briefly discussed. The classical cosmological solution for our Universe with a Λ-term has two branches divided by a gap. The quantum process of tunneling between branches took place.
Vladimir Burdyuzha, Burdyuzha V V
exaly   +2 more sources

Axions in the early universe

SciPost Physics Proceedings, 2023
The Peccei-Quinn solution to the strong CP problem provides a motivated framework rich in cosmological consequence. Thermal axion production is unavoidable if there is a thermal bath at early times.
Francesco D'Eramo
doaj   +4 more sources

A small and vigorous black hole in the early Universe [PDF]

Nature
Jan Scholtz, Nicolas Laporte, Santiago Arribas   +2 more
exaly   +2 more sources

A dormant overmassive black hole in the early Universe [PDF]

Nature
Chris Willott, Roberto Maiolino, Ignas Juodžbalis   +2 more
exaly   +2 more sources

Curvature Invariants for the Alcubierre and Natário Warp Drives

Universe, 2021
A process for using curvature invariants is applied to evaluate the metrics for the Alcubierre and the Natário warp drives at a constant velocity. Curvature invariants are independent of coordinate bases, so plotting these invariants will be free of ...
Brandon Mattingly, Abinash Kar, Matthew Gorban, William Julius, Cooper K. Watson, MD Ali, Andrew Baas, Caleb Elmore, Jeffrey S. Lee, Bahram Shakerin, Eric W. Davis, Gerald B. Cleaver   +11 more
doaj   +1 more source

Chiral gravitational effect in time-dependent backgrounds

Journal of High Energy Physics, 2021
Gravitational counterpart of the chiral magnetic effect, which is referred as the chiral gravitational effect, can also be of interest in a cosmological setup.
Kohei Kamada, Jun’ya Kume, Yusuke Yamada   +2 more
doaj   +1 more source

The Asymmetric Dynamical Casimir Effect

Physics, 2023
A mirror with time-dependent boundary conditions will interact with the quantum vacuum to produce real particles via a phenomenon called the dynamical Casimir effect (DCE).
Matthew J. Gorban, William D. Julius, Patrick M. Brown, Jacob A. Matulevich, Gerald B. Cleaver   +4 more
doaj   +1 more source

Curvature Invariants for Lorentzian Traversable Wormholes

Universe, 2020
The curvature invariants of three Lorentzian wormholes are calculated and plotted in this paper. The plots may be inspected for discontinuities to analyze the traversability of a wormhole.
Brandon Mattingly, Abinash Kar, William Julius, Matthew Gorban, Cooper Watson, MD Ali, Andrew Baas, Caleb Elmore, Bahram Shakerin, Eric Davis, Gerald Cleaver   +10 more
doaj   +1 more source

Curvature Invariants for the Accelerating Natário Warp Drive

Particles, 2020
A process for using curvature invariants is applied to evaluate the accelerating Natário warp drive. Curvature invariants are independent of coordinate bases and plotting the invariants is free of coordinate mapping distortions.
Brandon Mattingly, Abinash Kar, Matthew Gorban, William Julius, Cooper K. Watson, M.D. Ali, Andrew Baas, Caleb Elmore, Jeffrey S. Lee, Bahram Shakerin, Eric W. Davis, Gerald B. Cleaver   +11 more
doaj   +1 more source

Molecules in the early universe [PDF]

Kinematics and Physics of Celestial Bodies, 2017
12 pages, 1 figure, 3 ...
Novosyadlyj, B., Sergijenko, O., Shulga, V. M.   +2 more
openaire   +2 more sources