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Classical and Quantum Gravity, ISSN 0264-9381, 01/2018, Volume 35, Issue 4, p. 45012
We demonstrate that Huygens' principle for gravitational waves fails in quadratic gravity models that exhibit conformal symmetry at high energies. This results... 
modified gravity | higher derivative gravity | gravitational waves | QUANTUM SCIENCE & TECHNOLOGY | PHYSICS, MULTIDISCIPLINARY | QUANTUM | ASTRONOMY & ASTROPHYSICS | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS
Journal Article
Classical and Quantum Gravity, ISSN 0264-9381, 04/2014, Volume 31, Issue 7, p. 75008
We study a modified bosonic string theory that has a pressureless 'dust' field on the string worldsheet. The dust is a real scalar field with unit gradient... 
bosonic string | quantum gravity | canonical quantization | PHYSICS, MULTIDISCIPLINARY | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | String theory | Dust | Spectra | Tachyons | Strings | Gages | Quantum gravity | Gauges
Journal Article
Classical and Quantum Gravity, ISSN 0264-9381, 03/2013, Volume 30, Issue 6, pp. 65023 - 7
We study a type of geometric theory with a non-dynamical 1-form field. Its dynamical variables are an su(2) gauge field and a triad of su(2) valued 1-forms.... 
DYNAMICS | VARIABLES | PHYSICS, MULTIDISCIPLINARY | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | Quantization | Mathematical models | Decomposition | Gages | Quantum gravity | Gauges | Symmetry
Journal Article
Journal of Mathematical Physics, ISSN 0022-2488, 04/2014, Volume 55, Issue 4, p. 42501
We consider the Yang-Mills flow on hyperbolic 3-space. The gauge connection is constructed from the frame-field and (not necessarily compatible) spin... 
PHYSICS, MATHEMATICAL | GRAVITY | Flow stability | Flow equations | Divergence | Computer simulation | Mills | Torsion | Curvature | Superposition (mathematics) | Linearization | Flow | SPACE | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | YANG-MILLS THEORY | INSTABILITY | SPIN | DEGREES OF FREEDOM | PERTURBATION THEORY | TORSION | COMPACTIFICATION | GAUGE INVARIANCE | GEOMETRY
Journal Article
General Relativity and Gravitation, ISSN 0001-7701, 10/2008, Volume 40, Issue 10, pp. 2115 - 2129
Journal Article
Journal of Mathematical Physics, ISSN 0022-2488, 04/2014, Volume 55, Issue 4
We consider the Yang-Mills flow on hyperbolic 3-space. The gauge connection is constructed from the frame-field and (not necessarily compatible) spin... 
SPACE | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | YANG-MILLS THEORY | INSTABILITY | SPIN | DEGREES OF FREEDOM | PERTURBATION THEORY | TORSION | COMPACTIFICATION | GAUGE INVARIANCE | GEOMETRY
Journal Article
Journal of Mathematical Physics, ISSN 0022-2488, 04/2014, Volume 55, Issue 4, p. 1
  We consider the Yang-Mills flow on hyperbolic 3-space. The gauge connection is constructed from the frame-field and (not necessarily compatible) spin... 
Geometry | Mathematical problems | Vector space | Linear equations | Quantum physics
Journal Article
Physical Review D (Particles, Fields, Gravitation and Cosmology), ISSN 1550-7998, 04/2012, Volume 85, Issue 8
Recently, a local true (completely gauge fixed) Hamiltonian for spherically symmetric collapse was derived in terms of Ashtekar variables. We show that such a... 
Collapse | Gravitation | Theorems | Cosmology | Constants | Two dimensional | Gages | Gauges
Journal Article
Journal of High Energy Physics, ISSN 1126-6708, 09/2006, Volume 2006, Issue 9, pp. 045 - 45
We examine the fixed points to first-order RG flow of a non-linear sigma model with background metric, dilaton and tachyon fields. We show that on compact... 
Differential and Algebraic Geometry | Sigma Models | Bosonic Strings | Tachyon Condensation | differential and algebraic geometry | 2-DIMENSIONAL BLACK-HOLE | bosonic strings | HAIR | MODELS | sigma models | STRING THEORY | PROPAGATION | tachyon condensation | RENORMALIZATION | GEOMETRY | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D, ISSN 0556-2821, 2003, Volume 67, Issue 8
Three-dimensional gravity with a minimally coupled self-interacting scalar is considered. The falloff of the fields at infinity is assumed to be slower than... 
SURFACE TERMS | SUPERGRAVITY | ANTI-DESITTER SPACE | ASYMPTOTIC SYMMETRIES | STABILITY | ASTRONOMY & ASTROPHYSICS | CONSERVED CHARGES | BLACK-HOLE | ENTROPY | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Theory
Journal Article
Physical Review. D, Covering Particles, Fields, Gravitation and Cosmology, ISSN 2470-0010, 02/2017, Volume 95, Issue 4
We examine the cosmological sector of a gauge theory of gravity based on the SO(4,2) conformal group of Minkowski space. We allow for conventional matter... 
Gravitation | Gauge theory | Conformal mapping | Cosmic microwave background | Gravitational fields | Big bang cosmology | Minkowski space | Universe | Dark energy | Big Bang theory | Gauges
Journal Article
Classical and Quantum Gravity, ISSN 0264-9381, 04/2011, Volume 28, Issue 8, p. 085004
We analyze the delta = 2 Tomimatsu-Sato spacetime in the context of the proposed Kerr/CFT correspondence. This four-dimensional vacuum spacetime is not only... 
QUANTUM SCIENCE & TECHNOLOGY | PHYSICS, MULTIDISCIPLINARY | FIELD | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review. D, Covering Particles, Fields, Gravitation and Cosmology, ISSN 2470-0010, 11/2016, Volume 94, Issue 10
We study the quantum mechanics of self-gravitating thin shell collapse by solving the polymerized Wheeler-DeWitt equation. We obtain the energy spectrum and... 
Gravitation | Energy spectra | Gaussian distribution | Boundary conditions | Density | Time dependence | Thin walled shells | Energy conservation | Quantum mechanics | Gravitational collapse | Eigenvectors | Polymers | Quantum theory
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 04/2012, Volume 85, Issue 8
Recently, a local true (completely gauge fixed) Hamiltonian for spherically symmetric collapse was derived in terms of Ashtekar variables. We show that such a... 
DIMENSIONS | ASTRONOMY & ASTROPHYSICS | DILATON GRAVITY | SCALAR FIELD | QUANTIZATION | GRAVITY THEORIES | BLACK-HOLES | PHYSICS, PARTICLES & FIELDS | Physics - General Relativity and Quantum Cosmology
Journal Article
Physical Review D (Particles, Fields, Gravitation and Cosmology), ISSN 1550-7998, 01/2012, Volume 85, Issue 2
We study the homogeneous sector of the Rousso-Susskind-Thorlacius model describing the gravitational dynamics, including backreaction, of radiating 2D black... 
Dynamic tests | Dynamics | Mathematical analysis | Cosmology | Black holes (astronomy) | Mathematical models | Two dimensional | Gages | Gauges
Journal Article
Physical Review D, ISSN 2470-0010, 02/2016, Volume 93, Issue 4
Beginning from the Ashtekar formulation of general relativity, we derive a physical Hamiltonian written in terms of (classical) loop gravity variables. This is... 
SYMPLECTIC STRUCTURES | QUANTUM-GRAVITY | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | Gravitation | Degrees of freedom | Mathematical analysis | Relativity | Cosmology | Boundaries | Torsion | Three dimensional | Physics - General Relativity and Quantum Cosmology
Journal Article
Physical Review D, ISSN 2470-0010, 02/2017, Volume 95, Issue 4
We examine the cosmological sector of a gauge theory of gravity based on the SO(4,2) conformal group of Minkowski space. We allow for conventional matter... 
GAUGE-THEORY | COSMOLOGY | POINCARE | FIELD | ASTRONOMY & ASTROPHYSICS | SINGULARITY | FORMULATION | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D, ISSN 2470-0010, 03/2016, Volume 93, Issue 6
We reconsider a gauge theory of gravity in which the gauge group is the conformal group SO(4,2), and the action is of the Yang-Mills form, quadratic in the... 
GAUGE-THEORY | FIELD | ASTRONOMY & ASTROPHYSICS | EQUATIONS | CONSTANT | MODEL | SITTER | RELATIVITY | PHYSICS, PARTICLES & FIELDS | Gravitation | Couples | Constants | Generators | Transformations | Acceleration | Gages | Symmetry
Journal Article
Physical Review D, ISSN 2470-0010, 2016, Volume 94, Issue 10
We study the quantum mechanics of self-gravitating thin shell collapse by solving the polymerized Wheeler-DeWitt equation. We obtain the energy spectrum and... 
MECHANICS | MODEL | COLLAPSE | ASTRONOMY & ASTROPHYSICS | QUANTUM BLACK-HOLE | PHYSICS, PARTICLES & FIELDS | Physics - General Relativity and Quantum Cosmology
Journal Article
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