Results 31 to 40 of about 8,611,490 (324)

Recent progress in random metric theory and its applications to conditional risk measures [PDF]

open access: yes, 2010
The purpose of this paper is to give a selective survey on recent progress in random metric theory and its applications to conditional risk measures. This paper includes eight sections. Section 1 is a longer introduction, which gives a brief introduction
T. Guo
semanticscholar   +1 more source

The relativistic uniform model: the metric of the covariant theory of gravitation inside a body

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
In the paper, it has been established that the sum of stress-energy tensors of the electromagnetic and gravitational fields, the acceleration and the pressure ones inside a stationary uniform spherical body vanishes within the framework of relativistic ...
Fedosin Sergey
doaj   +1 more source

Scalars, Vectors and Tensors from Metric-Affine Gravity [PDF]

open access: yes, 2013
The metric-affine gravity provides a useful framework for analyzing gravitational dynamics since it treats metric tensor and affine connection as fundamentally independent variables.
A Palatini   +8 more
core   +2 more sources

A geometrical representation of the quantum information metric in the gauge/gravity correspondence

open access: yesPhysics Letters B, 2022
We study a geometrical representation of the quantum information metric in the gauge/gravity correspondence. We consider the quantum information metric that measures the distance between the ground states of two theories on the field theory side, one of ...
Asato Tsuchiya, Kazushi Yamashiro
doaj   +1 more source

An effective version of definability in metric structures [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2022
In this paper, a computably definable predicate in metric structures is defined and characterized. Then, it is proved that every separable infinite-dimensional Hilbert structure in an effectively presented language is computable.
Nazanin Roshandel Tavana
doaj   +1 more source

Coupling metric-affine gravity to the standard model and dark matter fermions [PDF]

open access: yesPhysical Review D, 2023
General Relativity (GR) exists in different formulations, which are equivalent in pure gravity. Once matter is included, however, observable predictions generically depend on the version of GR.
C. Rigouzzo, S. Zell
semanticscholar   +1 more source

Transfinite methods in metric fixed-point theory

open access: yesAbstract and Applied Analysis, 2003
This is a brief survey of the use of transfinite induction in metric fixed-point theory. Among the results discussed in some detail is the author's 1989 result on directionally nonexpansive mappings (which is somewhat sharpened), a result of Kulesza and ...
W. A. Kirk
doaj   +1 more source

Torsion Wave Solutions in Yang-Mielke Theory of Gravity

open access: yesAdvances in High Energy Physics, 2015
The approach of metric-affine gravity initially distinguishes it from Einstein’s general relativity. Using an independent affine connection produces a theory with 10 + 64 unknowns. We write down the Yang-Mills action for the affine connection and produce
Vedad Pasic, Elvis Barakovic
doaj   +1 more source

A Bi-Metric Theory with Exchange Symmetry [PDF]

open access: yes, 2008
We propose an extension of General Relativity with two different metrics. To each metric we define a Levi-Cevita connection and a curvature tensor.
Hossenfelder, S.
core   +2 more sources

Supergravity with Self-dual B fields and Instantons in Noncommutative Gauge Theory [PDF]

open access: yes, 1999
We study Type IIB supergravity in the presence of (euclidean) D3 branes and nonzero self-dual B-fields. We point out that the Einstein frame metric is identical to the full geometry for D3 branes without B fields turned on.
Das, S. R.   +2 more
core   +2 more sources

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