23 citations · 28 across the 2 of their papers we have counts for
7 papers
The Arrow of Time and the Initial Conditions of the Universe
Robert M. Wald
The existence of a thermodynamic arrow of time in the present universe implies that the initial state of the observable portion of our universe at (or near) the ``big bang'' must h…
Comment on Inflation and Alternative Cosmology
Stefan Hollands, Robert M. Wald
We respond to, and comment upon, a number of points raised in a recent paper by Kofman, Linde, and Mukhanov.
Morse theory and infinite families of harmonic maps between spheres
Kevin Corlette, Robert M. Wald
Existence of an infinite sequence of harmonic maps between spheres of certain dimensions was proven by Bizon and Chmaj. This sequence shares many features of the Bartnik-McKinnon s…
Gravitational Lensing in Inhomogeneous Universes
Robert M. Wald
I describe a new approach (developed in collaboration with D.E. Holz) to calculating the statistical distributions for magnification, shear, and rotation of images of cosmological…
Quantum Fields in Curved Spacetimes and Semiclassical Approaches: A Workshop Summary
Robert M. Wald
I briefly review some of the recent progress in quantum field theory in curved spacetime and other aspects of semiclassical gravity, as reported at the D3 Workshop at GR15.
Gravitational Collapse and Cosmic Censorship
Robert M. Wald
We review the status of the weak cosmic censorship conjecture, which asserts, in essence, that all singularities of gravitational collapse are hidden within black holes. Although l…