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gr-qc2024★ 1 cited
Spontaneous breaking of diffeomorphism invariance in conformally reduced quantum gravity
G. Giacometti, A. Bonanno, S. Plumari +1
We study the spontaneous breaking of diffeomorphism invariance using the proper-time non-perturbative flow equation in quantum gravity. In particular, we analyze the structure of t…
hep-th2024
Higher-derivative four-dimensional sine-Gordon model
Matteo F. Bontorno, G. G. N. Angilella, Dario Zappala
The phase structure of a higher derivative sine-Gordon model in four dimensions is analysed. It is shown that the inclusion of a relevant two-derivative term in the action signific…