Results 71 to 80 of about 34,436 (198)

Stochastic quantization and gauge-fixing of the linearized gravitational field

Zeitschrift f�r Physik C Particles and Fields, 1985
Due to the indefiniteness of the euclidean gravitational action the Parisi-Wu stochastic quantization scheme fails in the case of the gavitational field. Therefore we apply a recently proposed modification of stochastic quantization that works in Minkowski space and preserves all the advantages of the original Parisi-Wu method; in particular no gauge ...
H. H�ffel, H. Rumpf
openaire   +1 more source

FinalKAN: A Dual‐Stream KAN Network Integrating Multisource Features for Radio Telescope Pointing Correction

Advances in Astronomy, Volume 2026, Issue 1, 2026.
This paper investigates the degradation of pointing accuracy in the Kunming 40‐m radio telescope due to long‐term equipment aging and environmental disturbances. Conventional linear pointing models are constrained by their linear modeling framework, making it difficult to accurately represent the nonlinear errors induced by temperature, wind speed, and
Yao He, Longfei Hao, Wei Dai, Fernando Aguado Agelet   +3 more
wiley   +1 more source

Mechanical Entropy and Its Implications

Entropy, 2001
: It is shown that the classical laws of thermodynamics require that mechanical systems must exhibit energy that becomes unavailable to do useful work. In thermodynamics, this type of energy is called entropy.
Pharis E. Williams
doaj   +1 more source

DePerio: Deep Learning‐Based Oral Inflammatory Load Quantification for Periodontal Applications

Advanced Intelligent Systems, Volume 7, Issue 12, December 2025.
a) Inflammation and oral polymorphonuclear neutrophil (oPMN) Migration: Dental plaque accumulation leads to inflammation, prompting white blood cells (WBCs), particularly oPMNs, to migrate from blood vessels through the gingival epithelium into the oral cavity.
Fatemeh Soheili, Negin Masoudifar, Shahin Ebrahimi, Navid Mohaghegh, Mahdi S. M. H. Daneshvar, Mahdi Amrollahi Biouki, Yasaman Tahernezhad, Chunxiang Sun, Michael Glogauer, Ebrahim Ghafar‐Zadeh   +9 more
wiley   +1 more source

A Route toward Quantum Gravity through the Imaginary-Time Field Theory [PDF]

, 2014
A possible way toward the quantization of a weak gravitational field inspired by the imaginary-time field theory is discussed. The analogies of the general relativity in the canonical formulation with the thermodynamic geometry and superfluids are also ...
Huang, Yi-Cheng
core  

Comprehensive Solution to the Cosmological Constant, Zero-Point Energy, and Quantum Gravity Problems

, 2010
We present a solution to the cosmological constant, the zero-point energy, and the quantum gravity problems within a single comprehensive framework. We show that in quantum theories of gravity in which the zero-point energy density of the gravitational ...
A. Davidson, A. Davidson, A. Davidson, A. Davidson, A. Pais, C. Lanczos, C.M. Bender, C.M. Bender, C.M. Bender, C.M. Bender, C.M. Bender, C.M. Bender, D.G. Boulware, F. Wilczek, H. Kleinert, H. Weyl, H.F. Jones, I. Bars, K. Johnson, K. Johnson, K. Johnson, L.F. Abbott, M. Baker, M. Baker, M. Baker, M. Ostrogradski, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, P.D. Mannheim, Philip D. Mannheim, S. Deser, S. Weinberg, S. Weinberg, S.W. Hawking, T. Eguchi, T.D. Lee, T.D. Lee, T.D. Lee, T.D. Lee, Y. Nambu   +46 more
core   +1 more source

QUANTIZATION OF THE SPHERICALLY SYMMETRIC CONFIGURATION OF THE GRAVITATIONAL AND ELECTROMAGNETIC FIELDS

Odessa Astronomical Publications, 2017
To construct a quantum model of a charged black hole (CBH), we introduce a modified description of the configuration of the electromagnetic and gravitational fields in a spherically symmetric space-time, which consists of T- and R- regions. We choose such coordinate system that the desired metric functions depend only on the time coordinate in the T ...
Holovko, M. G., Gladush, V. D.
openaire   +4 more sources

Quantization of scalar fields in curved background, deformed Hopf algebra and entanglement [PDF]

, 2002
A suitable deformation of the Hopf algebra 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 gravitational background ...
Iorio, A., Lambiase, G., Vitiello, G.
core   +1 more source

Multiscale NMR Characterization in Shale: From Relaxation Mechanisms to Porous Media Research Frontiers

Energy Science &Engineering, Volume 13, Issue 11, Page 5777-5798, November 2025.
ABSTRACT Nuclear magnetic resonance (NMR), as an advanced non‐destructive and rapid measurement technology, has shown unique advantages in the evaluation of unconventional shale reservoirs. This paper systematically introduces the fundamental principles of NMR spectroscopy and relaxation theory in porous media and comprehensively analyzes the ...
Long Zhou, Guangzhi Liao, Ruiqi Fan, Rui Mao, Xueli Hou, Nan Li, Zhilong He, Yushu Zhang, Lizhi Xiao   +8 more
wiley   +1 more source

Energy-momentum tensors for non-commutative Abelian Proca field [PDF]

, 2014
We study two different possibilities of constructing the energy-momentum tensors for non-commutative Abelian Proca field, by using (i) general Noether theorem and (ii) coupling to a weak external gravitational field.
Darabi, F., Naderi, F.
core