COMPARING LQG WITH THE LINEARIZED THEORY
Abstract
We illustrate the conceptual scenario of the general boundary formulation for field theories and present a brief description of the calculus of graviton propagator in the context of LQG. Then we analyze the possibility of comparing this result with the graviton propagator in perturbative quantum gravity. For this purpose we demonstrate the compatibility of harmonic and radial gauge; it allows to simultaneously impose both gauges and to obtain an expression for the propagator comparable with the one provided by LQG.
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The EPRL two-point function agrees with Regge calculus in the γ → 0 limit.
“The two point function for the EPRL model was calculated in [75] and was shown to produce a result in agreement with that of Regge calculus [80, 260] in the limit γ → 0.”
From The Spin-Foam Approach to Quantum Gravity (2013) · cites this paper as [260]
Cites
Rovelli, C. (2004) · doi:10.1017/cbo9780511755804 · Cited by 2,240 · see citing works
Cosmological evolution of regularized branes in 6D warped flux compactifications
Minamitsuji, M., & Langlois, D. (2007) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.76.084031 · Cited by 33 · see citing works
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The Spin-Foam Approach to Quantum Gravity
Perez, A. (2013) · Living Reviews in Relativity · doi:10.12942/lrr-2013-3 · Cited by 677 · see citing works
- Authors
- MAGLIARO, E., & PERINI, C.
- Affiliations
- Roma Tre University (IT)
- Venue
- International Journal of Modern Physics A
- Publisher
- World Scientific Pub Co Pte Lt
- Published
- 2008-03-30
- Volume
- 23
- Issue
- 08
- Pages
- 1200-1208
- ISSN
- 0217-751X (ISSN-L)
- 1793-656X
- OpenAlex
- W2056319072
- Cited by
- 3
- References
- 2
- Citations by year
- 2013: 1 · 2012: 2
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Modern Physics A (publishedVersion)
- HAL (submittedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
- Keywords
- loop quantum gravity, graviton propagator, perturbative quantum gravity, harmonic gauge, linearized gravity
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