3 papers
gr-qc2026
Renormalization of the Quantum Stress Tensor Fluctuations and the Limits of Semiclassical Gravity
Alejandro Perez, Daniel Sudarsky
We analyze the expectation value of the energy-momentum tensor and its fluctuations in quantum field theory on curved spacetimes . A generally accepeted con…
gr-qc2025
Fully Self-Consistent Semiclassical Gravity
R. Muciño, E. Okon, D. Sudarsky +1
A theory of quantum gravity consists of a gravitational framework which, unlike general relativity, takes into account the quantum character of matter. In spite of impressive advan…
gr-qc2024
The Hadamard condition on a Cauchy surface and the renormalized stress-energy tensor
Benito A. Juárez-Aubry, Bernard S. Kay, Tonatiuh Miramontes +1
Given a Cauchy surface in a curved spacetime and a suitably defined quantum state on the CCR algebra of the Klein-Gordon quantum field on that surface, we show, by expanding the sq…