Results 1 to 10 of about 4,966,709 (244)

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

Nature
Maiolino R, Scholtz J, Witstok J, Carniani S, D'Eugenio F, de Graaff A, Übler H, Tacchella S, Curtis-Lake E, Arribas S, Bunker A, Charlot S, Chevallard J, Curti M, Looser TJ, Maseda MV, Rawle TD, Rodríguez Del Pino B, Willott CJ, Egami E, Eisenstein DJ, Hainline KN, Robertson B, Williams CC, Willmer CNA, Baker WM, Boyett K, DeCoursey C, Fabian AC, Helton JM, Ji Z, Jones GC, Kumari N, Laporte N, Nelson EJ, Perna M, Sandles L, Shivaei I, Sun F.   +38 more
europepmc   +2 more sources

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

Nature
Juodžbalis I, Maiolino R, Baker WM, Tacchella S, Scholtz J, D'Eugenio F, Witstok J, Schneider R, Trinca A, Valiante R, DeCoursey C, Curti M, Carniani S, Chevallard J, de Graaff A, Arribas S, Bennett JS, Bourne MA, Bunker AJ, Charlot S, Jiang B, Koudmani S, Perna M, Robertson B, Sijacki D, Übler H, Williams CC, Willott C.   +27 more
europepmc   +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

Investigation of the quantum vacuum as an energy sink for subcritical and supercritical vaporization lasers

Heliyon, 2020
In this paper, it is shown that the quantum electrodynamic vacuum particle production rate by a vaporization laser is negligible and is not a significant energy sink at electric field strengths beyond the Schwinger Limit.
Jeffrey S. Lee, Gerald B. Cleaver
doaj   +1 more source

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

Journal 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

Borel resummation of secular divergences in stochastic inflation

Journal of High Energy Physics, 2023
We make use of Borel resummation to extract the exact time dependence from the divergent series found in the context of stochastic inflation. Correlation functions of self-interacting scalar fields in de Sitter spacetime are known to develop secular IR ...
Masazumi Honda, Ryusuke Jinno, Lucas Pinol, Koki Tokeshi   +3 more
doaj   +1 more source