Results 181 to 190 of about 7,599,029 (258)

Reconnection Onset in Overstretched Thin Current Sheets: 3‐D Kinetic Picture

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract Evolution of the magnetotail equilibrium, whose current density iso‐contours are stretched beyond the magnetic field lines due to small ion anisotropy and agyrotropic effects on the scales of the thermal ion gyroradius (the so‐called overstretched thin current sheet) is considered using 3‐D explicit particle‐in‐cell simulations.
M. I. Sitnov, H. Arnold
wiley   +1 more source

On the cosmological constant problem and brane-world geometry

open access: yesOpen Physics, 2011
Capistrano Abraão, Odon Pedro
doaj   +1 more source

The cosmological constant problem and the effective potential of a gravity-coupled scalar

open access: yesJournal of High Energy Physics
We consider a quantum scalar field in a classical (Euclidean) De Sitter background, whose radius is fixed dynamically by Einstein’s equations. In the case of a free scalar, it has been shown by Becker and Reuter that if one regulates the quantum ...
Renata Ferrero, Roberto Percacci
doaj   +1 more source

The quintom theory of dark energy after DESI DR2. [PDF]

open access: yesNatl Sci Rev
Cai Y, Ren X, Qiu T, Li M, Zhang X.
europepmc   +1 more source

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