Results 101 to 110 of about 474,978 (288)

Dynamics of Fricke–Painlevé VI Surfaces

Dynamics
The symmetries of a Riemann surface Σ∖{ai} with n punctures ai are encoded in its fundamental group π1(Σ). Further structure may be described through representations (homomorphisms) of π1 over a Lie group G as globalized by the character variety C=Hom(π1,
Michel Planat, David Chester, Klee Irwin
doaj   +1 more source

Quantum Theory of Gravity and the Perihelion Motion of the Mercury [PDF]

, 1971
Kichiro Hiida, M. Kikugawa
openalex   +1 more source

Adaptive Fractional Hybrid Impedance Control of Rotary Series Elastic Actuator in Flat Terrains

Advanced Intelligent Systems, EarlyView.
This article presents an adaptive fractional hybrid impedance control (AFH‐IC) approach for rotary series elastic actuators operating on flat terrains. The proposed method integrates fractional‐order control, adaptive fuzzy logic, and particle swarm optimization to enhance torque tracking accuracy and robustness.
Muhammed Özdemir, Zafer Bingül
wiley   +1 more source

Quantum Gravity: Has Spacetime Quantum Properties? [PDF]

arXiv, 2009
The incompatibility between GR and QM is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - QM gives a universally valid basis for the description of all natural systems, then the gravitational field should have quantum properties.
arxiv  

On the Gauge Conditions in Quantum Gravity [PDF]

, 1977
Hitoshi Nishino, Yasuhiro Fujii
openalex   +1 more source

Spring and Power in Hovering Ornithopters

Advanced Intelligent Systems, EarlyView.
Only small ornithopters can hover, longest at the hummingbird size. This article reviews the drive and power of these hovering machines, focusing on elastic energy and thrust boosters. Unlike two‐winged designs, X‐winged and multiple‐V‐winged ornithopters benefit from lower disk loading and slower, smaller wingbeats, and the clap‐and‐fling effect ...
Gih‐Keong Lau, Yao‐Wei Chin, Shih‐Chun Lin, Yu‐Hsiang Lai, Boo Cheong Khoo   +4 more
wiley   +1 more source

On complexity and duality

Journal of High Energy Physics
We explore the relationship between complexity and duality in quantum systems, focusing on how local and non-local operators evolve under time evolution. We find that non-local operators, which are dual to local operators under specific mappings, exhibit
Jeff Murugan, Zayd Pandit, Hendrik J R Van Zyl   +2 more
doaj   +1 more source

Gravitational wave echoes from macroscopic quantum gravity effects

Journal of High Energy Physics, 2017
New theoretical approaches developed in the last years predict that macroscopic quantum gravity effects in black holes should lead to modifications of the gravitational wave signals expected in the framework of classical general relativity, with these ...
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay   +2 more
doaj   +1 more source

Quantum Brans-Dicke Gravity in Euclidean Path Integral Formulation [PDF]

arXiv, 1997
The conformal structure of Brans-Dicke gravity action is carefully studied. It is discussed that Brans-Dicke gravity action has definitely no conformal invariance. It is shown, however, that this lack of conformal invariance enables us to demonstrate that Brans-Dicke theory appears to have a better short-distance behavior than Einstein gravity as far ...
arxiv  

On the Functional Measure for Quantum Gravity in the Light-Cone Gauge [PDF]

, 1978
R. Endo, Toshiei Kimura
openalex   +1 more source