47 citations · 91 across the 4 of their papers we have counts for
7 papers · 1 filter
Quantum field theory in curved spacetime, the operator product expansion, and dark energy
S. Hollands, R. M. Wald
To make sense of quantum field theory in an arbitrary (globally hyperbolic) curved spacetime, the theory must be formulated in a local and covariant manner in terms of locally meas…
A general variational principle for spherically symmetric perturbations in diffeomorphism covariant theories
Michael D. Seifert, Robert M. Wald
We present a general method for the analysis of the stability of static, spherically symmetric solutions to spherically symmetric perturbations in an arbitrary diffeomorphism covar…
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…
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…