A review of some errors made by the author and others in their search for quantum models
of gravity in cosmological space-times that asymptote to de Sitter (dS) space in the future …

We discuss some general properties of quantum gravity in De Sitter space. It has been
argued that the Hilbert space is of finite dimension. This suggests a macroscopic argument …

For pt. I see ibid., vol. 8, no. 11, p. 1961 (1991). The requirement of de Sitter invariance of
physical states in linearized gravity in de Sitter spacetime leads to an apparent paradox …

This is a summary of two lectures I gave at the Davis Conference on Cosmic Inflation. I
explain why the quantum theory of de Sitter (dS) space should have a finite number of states …

Perturbative gravity about a de Sitter background motivates a global picture of quantum
dynamics in “eternal de Sitter space,” the theory of states which are asymptotically de Sitter …

In de Sitter space, the theory of the conformal factor of quantum gravity becomes nontrivial
when corrections from quantum matter fields are considered. In the corresponding theory …

We consider degrees of freedom for a quantum de Sitter spacetime. The problem is studied
from both a Lorentzian and a Euclidean perspective. From a Lorentzian perspective, we …

We show, in complete accord with the usual Rindler picture, that detectors with constant
acceleration a in de Sitter (dS) and anti-de Sitter (AdS) spaces with cosmological constants …

The graviton propagator in a de Sitter background is found to be divergent. We show that as
a consequence of this divergence, de Sitter space is not a solution of the equations of …

Observers in de Sitter space can only access the space up to their cosmological horizon.
Assuming thermal equilibrium, we use the quantum Ryu–Takayanagi or island formula to …