We quantize linearized Einstein-Hilbert gravity on de Sitter backgrounds in a covariant
gauge. We verify the existence of a maximally-symmetric (ie de Sitter-invariant) Hadamard …

We use dimensional regularization to compute the 1PI 1-point function of quantum gravity at
one loop order in a locally de Sitter background. As with other computations, the result is a …

We describe a simple gauge-fixing that leads to a construction of a quantum Hilbert space
for quantum gravity in an asymptotically Anti de Sitter spacetime, valid to all orders of …

The quantum field theory describing linear gravitational perturbations is important from a
cosmological viewpoint, in particular when formulated on de Sitter spacetime, which is used …

A bstract We consider quantum general relativity in three dimensions with a positive
cosmological constant. The Hartle-Hawking wave function is computed as a function of …

Perturbative gravity in global de Sitter space is subject to so-called linearization stability
constraints: If they are to couple consistently to the gravitational field, quantum states must …

Hints from a number of different approaches to quantum gravity point to a phenomenon of
“spontaneous dimensional reduction” to two spacetime dimensions near the Planck scale. I …

A bstract We obtain solutions of the Wheeler-DeWitt equation with positive cosmological
constant for a closed universe in the large-volume limit. We argue that this space of solutions …

We point out a potential relevance between the Krein–Gupta–Bleuler (KGB) vacuum leading
to a fully covariant quantum field theory for gravity in de Sitter (dS) spacetime and the …

Phys. Rev. Lett. 104, 119001 (2010) - Comment on ``Universality of Quantum Gravity
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