Classical Gravity: Mathematical Formalism
ORAL · T15 · ID: 49990
Presentations
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The Dirac--Bergmann algorithm: Singular Lagrangians, Constrained Hamiltonian Systems and Gauge Invariance
ORAL
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Publication: "Singular Lagrangians, Constrained Hamiltonian Systems and Gauge Invariance: An Example of the Dirac--Bergmann Algorithm", in preparation.
Presenters
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J D Brown
North Carolina State University
Authors
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J D Brown
North Carolina State University
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An Invariant Characterization of the Levi-Civita Spacetimes
ORAL
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Publication: Symmetry 2021, 13(8), 1469; https://doi.org/10.3390/sym13081469
Presenters
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Cooper K Watson
Baylor University
Authors
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Cooper K Watson
Baylor University
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William Julius
Baylor University
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Matthew Gorban
Baylor University
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David D McNutt
University of Stavanger
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Eric W Davis
Baylor University
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Gerald B Cleaver
Baylor University
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Analysis of Levi-Civita Spacetimes using the Cartan-Karlhede Algorithm
ORAL
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Publication: https://doi.org/10.3390/sym13081469
Presenters
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William Julius
Baylor University
Authors
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William Julius
Baylor University
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Cooper K Watson
Baylor University
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Matthew Gorban
Baylor University
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David D McNutt
University of Stavanger
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Eric W Davis
Baylor University
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Gerald B Cleaver
Baylor University
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Local and covariant flow relations for OPE coefficients in Lorentzian spacetimes
ORAL
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Presenters
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Mark G Klehfoth
University of Chicago
Authors
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Mark G Klehfoth
University of Chicago
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Robert D Wald
University of Chicago
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Boundary conditions and proof of the scalar, vector, tensor decomposition theorem in cosmological perturbation theory
ORAL
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Publication: 1. A. Amarasinghe, M. G. Phelps and P. D. Mannheim, Cosmological perturbations in conformal gravity. II., Physical Review D 99, 083527 (2019). (arXiv:1805.06807 [gr-qc])<br>2. M. Phelps, A. Amarasinghe and P. D. Mannheim, Three-dimensional and four-dimensional scalar, vector, tensor cosmological fluctuations and the cosmological decomposition theorem, General Relativity and Gravitation 52, 114 (2020). (arXiv:1912.10448 [gr-qc])<br>3. A. Amarasinghe and P. D. Mannheim, Cosmological fluctuations on the light cone, Physical Review D 103, 103517 (2021). (arXiv:2011.02440 [gr-qc])<br>4. A. Amarasinghe, T. Liu, D. A. Norman and P. D. Mannheim, Exact solution to perturbative conformal cosmology from recombination until the current era, Physical Review D 103, 104022 (2021). (arXiv:2101.02608 [gr-qc])
Presenters
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Asanka Amarasinghe
University of Connecticut
Authors
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Asanka Amarasinghe
University of Connecticut
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Matthew M Phelps
University of Connecticut
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Tianye Liu
University of Connecticut
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Daniel A Norman
University of Connecticut
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Philip D Mannheim
University of Connecticut
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The geometry of field sheet foliations of spacetime in force-free electrodynamics
ORAL
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Publication: Menon, G., "The Non-Null and Force-free Electromagnetic Field ", Classical and Quantum Gravity, (2021)<br>Menon, G., "The Null and Force-free Electromagnetic Field ", Classical and Quantum Gravity, (2020)<br>Menon, G., "Force-free electrodynamics and Foliations in an arbitrary spacetime ", Classical and Quantum Gravity, (2020)
Presenters
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Govind Menon
Troy University
Authors
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Govind Menon
Troy University
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Quantum Corrections to Classical Time Dilation
ORAL
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Publication: Quantum clocks observe classical and quantum time dilation<br>Alexander R. H. Smith and Mehdi Ahmadi<br>Nature Communications 11, 5360 (2020)<br><br>Quantum time dilation in atomic spectra<br>https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.023053<br>Piotr T. Grochowski, Alexander R. H. Smith, Andrzej Dragan, Kacper Debski <br>Physical Review Research 3, 023053 (2021)<br><br>Two forthcoming articles.
Presenters
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Alexander R Smith
Dartmouth College
Authors
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Alexander R Smith
Dartmouth College
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Mehdi Ahmadi
Santa Clara
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Piotr grochowski
University of Warsaw
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Kacper Debski
University of Warsaw
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Andrzej Dragan
University of Warsaw
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