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hep-th2025
Self-consistent graviton spectral function in Lorentzian quantum gravity
Jan M. Pawlowski, Manuel Reichert, Jonas Wessely
We present the first fully self-consistent computation of the graviton spectral function in quantum gravity, using the spectral renormalisation group for gravity put forward in arX…
hep-th2025
Critical scaling for spectral functions
Konrad Kockler, Jan M. Pawlowski, Jonas Wessely
We study real-time scalar -theory in 2+1 dimensions near criticality. Specifically, we compute the single-particle spectral function and that of the -channel four-point fun…