Results 41 to 50 of about 8,611,490 (324)
Parity violating metric-affine gravity theories [PDF]
Classical and Quantum Gravity, 2021 Abstract We study a metric-affine gravitational theory given by the Einstein–Hilbert (EH) action plus a parity violating contribution (which we will refer to as the Hojman term, also known as Holst term) in vacuum.
Damianos Iosifidis, Lucrezia Ravera
openaire +4 more sources
A Spinor Theory of Gravity and the Cosmological Framework [PDF]
, 2007 Recently we have presented a new formulation of the theory of gravity based on an implementation of the Einstein Equivalence Principle distinct from General Relativity.
Anderson J L +7 more
core +2 more sources
Gravitational waves and lensing of the metric theory proposed by Sobouti [PDF]
, 2006 Aims. We investigate in detail two physical properties of the metric \( f(R) \) theory developed by Sobouti (2007, A&A, 464, 921). We first look for the possibility of producing gravitational waves which travel at the speed of light.
S. Mendoza, Y. M. Rosas–Guevara
semanticscholar +1 more source
Analysis of constraints and their algebra in bimetric theory
Journal of High Energy Physics, 2018 We perform a canonical analysis of the bimetric theory in the metric formulation, computing the constraints and their algebra explicitly. In particular, we compute a secondary constraint, that has been argued to exist earlier, and show that it has the ...
S. F. Hassan, Anders Lundkvist
doaj +1 more source
Theory of the norm-induced metric in atmospheric dynamics [PDF]
Atmospheric Chemistry and Physics, 2015 We suggest that some metrics for quantifying distances in phase space are based on linearized flows about unrealistic reference states and hence may not be applicable to atmospheric flows.
T.-Y. Koh, F. Wan
doaj +1 more source
Causality and Superluminal Fields [PDF]
, 2006 The expression of causality depends on an underlying choice of chronology. Since a chronology is provided by any Lorentzian metric in relativistic theories, there are as many expressions of causality as there are non-conformally related metrics over ...
Bruneton, Jean-Philippe
core +2 more sources
Strongly nonlinear potential theory on metric spaces
Abstract and Applied Analysis, 2002 We define Orlicz-Sobolev spaces on an arbitrary metric space with a Borel regular outer measure, and we develop a capacity theory based on these spaces. We study basic properties of capacity and several convergence results.
Noureddine Aïssaoui
doaj +1 more source
مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1994 This paper presents a new method to rank triangular fuzzy numbers as well as a new metric (triangular fuzzy metric) on the set of fuzzy points. This metric can be used in both studying fuzzy topological spaces and decision-making theory.
Mohammad A. Mahmoud Al-Amleh
doaj +1 more source
New Ansatz for Metric Operator Calculation in Pseudo-Hermitian Field Theory
, 2009 In this work, a new ansatz is introduced to make the calculations of the metric operator in Pseudo-Hermitian field theory simpler. The idea is to assume that the metric operator is not only a functional of the field operators $\phi$ and its conjugate ...
Shalaby, Abouzeid M.
core +1 more source
Deformation techniques in metric critical point theory
Advances in Nonlinear Analysis, 2013 We propose a synthetic and self-contained treatment of the main deformation results of critical point theory, for continuous functionals defined on metric spaces.
Corvellec Jean-Noël
doaj +1 more source