Andrew DeBenedictis

TL;DR: It is found that technically feasible levels of energy efficiency and decarbonized energy supply alone are not sufficient; widespread electrification of transportation and other sectors is required.

TL;DR: In this paper, Cattoen et al. studied the gravitational vacuum star (gravastar) configuration in a model where the interior de Sitter spacetime segment is continuously extended to the exterior Schwarzschild spacetime, and the multilayered structure of Mazur and Mottola was replaced by a continuous stress energy tensor at the price of introducing anisotropy in the (fluid) model of the gravastar.

TL;DR: In this article, the existence and properties of wormhole throats in modified f (R) gravity theory were studied and it was shown that modified gravity can minimize the amount of anisotropy required to support the existence of a wormhole.

TL;DR: In this article, the authors consider time-dependent dark-energy star models, with an evolving parameter {omega} crossing the phantom divide = 1, which physically implies that the negative radial pressure exceeds the energy density.

TL;DR: In this paper, the authors construct the phase space of isolated horizons with genus greater than 0 and find that the leading term agrees with the A/4 law and the sub-leading contribution is modified by the genus cycles.