John Ellis

TL;DR: In this paper, it was shown that γ-ray bursts are sensitive to an energy dispersion predicted by some approaches to quantum gravity, which is sufficient to test theories of quantum gravity.

TL;DR: The fine-scale time structure and hard spectra of GRB emissions are very sensitive to the possible dispersion of electromagnetic waves in vacuo with velocity differences, as suggested in some approaches to quantum gravity as discussed by the authors.

TL;DR: In this article, the authors presented a detailed study of gravitino production and decay subsequent to cosmological inflation, and calculated the cross sections for gravitinos produced in collisions of particles in the supersymmetric standard model.

TL;DR: In this paper, a class of supergravity models coupled to matter in which the scales of supersymmetry breaking and of weak gauge symmetry breaking are both fixed by dimensional transmutation, not put in by hand.

TL;DR: In this article, the authors present the second volume of the Future Circular Collider Conceptual Design Report, devoted to the electron-positron collider FCC-ee, and present the accelerator design, performance reach, a staged operation scenario, the underlying technologies, civil engineering, technical infrastructure, and an implementation plan.