Results 31 to 40 of about 34,436 (198)
Composite higher derivative theory of gravity
Physical Review Research, 2020 We investigate a higher derivative theory that belongs to the class of composite field theories. Starting from the Yang-Mills theory based on the Lorentz group, we express the gauge vector fields in terms of the tetrad decomposition of a space-time ...
Hans Christian Öttinger
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Quantum Creation of Black Hole by Tunneling in Scalar Field Collapse [PDF]
, 1999 Continuously self-similar solution of spherically symmetric gravitational collapse of a scalar field is studied to investigate quantum mechanical black hole formation by tunneling in the subcritical case where, classically, the collapse does not produce ...
A. V. Frolov +17 more
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Quantization of Scalar Fields in Curved Background and Quantum Algebras [PDF]
, 2001 We show that a suitable deformation of the algebra $h_k(1)$ of the creation and annihilation operators for a complex scalar field, initially quantized in Minkowski space--time, induces the canonical quantization of the same field in a generic ...
Iorio, Alfredo +2 more
core +3 more sources
Gravitational production of vector dark matter
Journal of High Energy Physics, 2020 A model of vector dark matter that communicates with the Standard Model only through gravitational interactions has been investigated. It has been shown in detail how does the canonical quantization of the vector field in varying FLRW geometry implies a ...
Aqeel Ahmed +2 more
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Journal of High Energy Physics, 2022 Topological orders are a prominent paradigm for describing quantum many-body systems without symmetry-breaking orders. We present a topological quantum field theoretical (TQFT) study on topological orders in five-dimensional spacetime (5D) in which ...
Zhi-Feng Zhang, Peng Ye
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Intelligent Parameter Identification for Robot Servo Controller Based on Improved Integration Method
Sensors, 2021 With the rise of smart robots in the field of industrial automation, the motion control theory of the robot servo controller has become a research hotspot.
Ye Li, Dazhi Wang, Shuai Zhou, Xian Wang
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, 2020 We show that when the gravitational field is treated quantum-mechanically, it induces fluctuations -- noise -- in the lengths of the arms of gravitational wave detectors.
Parikh, Maulik +2 more
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Amplitudes on plane waves from ambitwistor strings
Journal of High Energy Physics, 2017 In marked contrast to conventional string theory, ambitwistor strings remain solvable worldsheet theories when coupled to curved background fields. We use this fact to consider the quantization of ambitwistor strings on plane wave metric and plane wave ...
Tim Adamo +3 more
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Midi-Superspace Quantization of Non-Compact Toroidally Symmetric Gravity [PDF]
, 1998 We consider the quantization of the midi-superspace associated with a class of spacetimes with toroidal isometries, but without the compact spatial hypersurfaces of the well-known Gowdy models.
Beetle, Christopher
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Inclusion of matter in inhomogeneous loop quantum cosmology [PDF]
, 2012 We study the hybrid quantization of the linearly polarized Gowdy $T^3$ model with a massless scalar field with the same symmetries as the metric. For simplicity, we quantize its restriction to the model with local rotational symmetry.
Blas, Daniel Martín-de +2 more
core +3 more sources