Results 11 to 20 of about 602 (167)

Interactive Multiobjective Procedure for Mixed Problems and Its Application to Capacity Planning [PDF]

open access: yesEntropy, 2021
A problem that appears in many decision models is that of the simultaneous occurrence of deterministic, stochastic, and fuzzy values in the set of multidimensional evaluations. Such problems will be called mixed problems.
Maciej Nowak   +2 more
doaj   +2 more sources

Scalar-connection gravity and spontaneous scalarization [PDF]

open access: yesPhysical Review D, 2021
Scalar-tensor theories of gravity are known to allow significant deviations from general relativity through various astrophysical phenomena. In this paper, we formulate a scalar-connection gravity by setting up scalars and connection configurations instead of metric. Since the matter sector is not straightforward to conceive without a metric, we invoke
Hemza Azri, Salah Nasri
openaire   +2 more sources

Probing Modified Gravity Theories with Scalar Fields Using Black-Hole Images

open access: yesUniverse, 2023
We study a number of well-motivated theories of modified gravity with the common overarching theme that they predict the existence of compact objects, such as black holes and wormholes endowed with scalar hair.
Georgios Antoniou   +2 more
doaj   +1 more source

Scalar Diversity [PDF]

open access: yesJournal of Semantics, 2014
We present experimental evidence showing that there is considerable variation between the rates at which scalar expressions from different lexical scales give rise to Upper-Bounded construals. We investigated two factors that might explain the variation between scalar expressions: first, the availability of the lexical scales, which we measured on the ...
Bob van Tiel   +3 more
openaire   +3 more sources

Scalar glueball, scalar quarkonia, and their mixing [PDF]

open access: yesPhysical Review D, 2006
The isosinglet scalar mesons $f_0(1710)$, $f_0(1500)$, $f_0(1370)$ and their mixing are studied. We employ two recent lattice results as the starting point; one is the isovector scalar meson $a_0(1450)$ which displays an unusual property of being nearly independent of quark mass for quark masses smaller than that of the strange, and the other is the ...
Cheng, Hai-Yang   +2 more
openaire   +2 more sources

Nonlinear instability and scalar clouds of spherical exotic compact objects in scalar-Gauss-Bonnet theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this work, we present a new type of scalar clouds supported by spherically symmetric horizonless compact objects in the scalar-Gauss–Bonnet theory.
Shao-Jun Zhang
doaj   +1 more source

Nonconvex Vector Optimization and Optimality Conditions for Proper Efficiency

open access: yesInternational Journal of Analysis and Applications, 2022
In this paper, we consider, a new nonlinear scalarization function in vector spaces which is a generalization of the oriented distance function. Using the algebraic type of closure, which is called vector closure, we introduce the algebraic boundary of a
E. Kiyani, S. M. Vaezpour, J. Tavakoli
doaj   +1 more source

Scalar–tensor theories with an external scalar [PDF]

open access: yesGeneral Relativity and Gravitation, 2016
Scalar-tensor (ST) gravity is considered in the case where the scalar is an external field. We show that General Relativity (GR) and usual ST gravity are particular cases of the External Scalar-Tensor (EST) gravity. It is shown with a particular cosmological example that it is possible to join a part of a GR solution to a part of a ST one such that the
Chauvineau, Bertrand   +2 more
openaire   +4 more sources

A generalization of interval-valued optimization problems and optimality conditions by using scalarization and subdifferentials

open access: yesKuwait Journal of Science, 2021
In this work, interval-valued optimization problems are considered. Ordering cone is used in order to obtain a generalization of interval-valued optimization problems on real topological vector spaces.
Emrah KARAMAN
doaj   +1 more source

Symmetric scalars [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We provide a complete classification of Poincar'e-invariant scalar field theories with an enlarged set of classical symmetries to leading order in derivatives, namely for the so-called P(X,ϕ) theories, in two or more spacetime dimensions. We find only three possibilities: Dirac-Born-Infeld, Cuscuton and Scaling theories.
Grall, Tanguy   +2 more
openaire   +4 more sources

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