1994/03/10 by Dieter R. Brill, Dieter Brill, Geoff Hayward · 2 citations
Mathematics · Physics and Astronomy · #Action (physics) #Additive function #Black Holes and Theoretical Physics #Boundary (topology) #Causal sets #Classical mechanics #Cosmology and Gravitation Theories #Effective action #Gravitation #Mathematical analysis #Mathematical physics #Mathematics #Noncommutative and Quantum Gravity Theories #Physics #Quantum #Quantum field theory in curved spacetime #Quantum gravity #Quantum mechanics #Spacetime #Superposition principle #Theoretical physics #gr-qc
paper · pdf · doi:10.1103/physrevd.50.4914
published as Phys.Rev. D50 (1994) 4914-4919 · 20 pages LaTeX file, report numbers UMD-PP 94-100 and Alberta Thy 10-94
arxiv created 1994/03/10 · openalex publication_date 1994/10/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The gravitational action is not always additive in the usual sense. We provide a general prescription for the change in action that results when different portions of the boundary of a spacetime are topologically identified. We discuss possible implications for the superposition law of quantum gravity. We present a definition of ``generalized additivity'' which does hold for arbitrary spacetime composition.