Leonardo Chataignier, “Relational observables, reference frames, and conditional probabilities”, Phys. Rev. D, 103:2 (2021)
Natalia Gorobey, Alexander Lukyanenko, Alexander V. Goltsev, “Wave Functional of the Universe and Time”, Universe, 7:11 (2021), 452
Roberto Casadio, Alexander Kamenshchik, Iberê Kuntz, “Covariant singularities in quantum field theory and quantum gravity”, Nuclear Physics B, 971 (2021), 115496
Leonardo Chataignier, Manuel Krämer, “Unitarity of quantum-gravitational corrections to primordial fluctuations in the Born-Oppenheimer approach”, Phys. Rev. D, 103:6 (2021)
Renata Kallosh, Adel A. Rahman, “Quantization of gravity in the black hole background”, Phys. Rev. D, 104:8 (2021)
Jos Gibbons, Atsushi Higuchi, William C. C. Lima, “Infrared problem in the Faddeev-Popov ghost propagator in perturbative quantum gravity in de Sitter spacetime”, Phys. Rev. D, 103:6 (2021)
Renata Kallosh, “Quantization of gravity in spherical harmonic basis”, Phys. Rev. D, 104:8 (2021)
Herbert W. Hamber, Lu Heng Sunny Yu, “Dyson's Equations for Quantum Gravity in the Hartree–Fock Approximation”, Symmetry, 13:1 (2021), 120
A. O. Barvinsky, J. Wilson-Gerow, P. C. E. Stamp, “Correlated worldline theory: Structure and consistency”, Phys. Rev. D, 103:6 (2021)
Leonardo Chataignier, “Construction of quantum Dirac observables and the emergence of WKB time”, Phys. Rev. D, 101:8 (2020)