2 papers
gr-qc2026
First-principle evolution Hamiltonian operator: derivation from ADM quantum constraints and quantum reference-frame conditions
Chun-Yen Lin
For any Dirac theory of quantum gravity governed by a set of well-defined quantum constraints, we discover a universal formula for the exact form of the evolution Hamiltonian opera…
gr-qc2025
Gravitational wave constraints on the primordial black hole dominated early universe
Guillem Domènech, Chunshan Lin, Misao Sasaki
We calculate the gravitational waves (GWs) induced by the density fluctuations due to inhomogeneous distribution of primordial black holes (PBHs) in the case where PBHs eventually…