Results 21 to 30 of about 602 (167)

Twenty years of continuous multiobjective optimization in the twenty-first century

open access: yesEURO Journal on Computational Optimization, 2021
The survey highlights some of the research topics which have attracted attention in the last two decades within the area of mathematical optimization of multiple objective functions.
Gabriele Eichfelder
doaj   +1 more source

Scalar perturbations in scalar field quantum cosmology [PDF]

open access: yesPhysical Review D, 2009
In this paper it is shown how to obtain the simplest equations for the Mukhanov-Sasaki variables describing quantum linear scalar perturbations in the case of scalar fields without potential term. This was done through the implementation of canonical transformations at the classical level, and unitary transformations at the quantum level, without ever ...
Falciano, F. T., Pinto-Neto, Nelson
openaire   +3 more sources

Renormalization for a Scalar Field in an External Scalar Potential [PDF]

open access: yesSymmetry, 2018
The Pauli–Villars regularization procedure confirms and sharpens the conclusions reached previously by covariant point splitting. The divergences in the stress tensor of a quantized scalar field interacting with a static scalar potential are isolated into a three-parameter local, covariant functional of the background potential.
Stephen A. Fulling   +2 more
openaire   +3 more sources

Search for scalar leptons and scalar quarks at LEP [PDF]

open access: yesPhysics Letters B, 2004
Scalar partners of quarks and leptons, predicted in supersymmetric models, are searched for in e^+e^- collisions at centre-of-mass energies between 192GeV and 209GeV at LEP. No evidence for any such particle is found in a data sample of 450 pb^-1. Upper limits on their production cross sections are set and lower limits on their masses are derived in ...
Achard, P.   +222 more
openaire   +8 more sources

Complex scalar fields in scalar-tensor and scalar-torsion theories

open access: yesModern Physics Letters A, 2022
In this paper, we investigate the cosmological dynamics in a spatially flat Friedmann–Lemaître–Robertson–Walker geometry in scalar-tensor and scalar-torsion theories where the nonminimally coupled scalar field is a complex field. We derive the cosmological field equations and we make use of dimensionless variables in order to determine the stationary ...
openaire   +2 more sources

Atomic Ionization by Scalar Dark Matter and Solar Scalars [PDF]

open access: yesPhysical Review Letters, 2021
We calculate the cross-sections of atomic ionization by absorption of scalar particles in the energy range from a few eV to 100 keV. We consider both nonrelativistic particles (dark matter candidates) and relativistic particles which may be produced inside Sun.
H. B. Tran Tan   +3 more
openaire   +3 more sources

IDOL: A web application for mixed integer linear multiobjective optimization

open access: yesSoftwareX, 2022
Practical decision-making very often results in complex multiobjective optimization problems that can be solved only by advanced software. At present, it is available for singleobjective optimization and much less for multiobjective optimization ...
Ignacy Kaliszewski, Olga Karelkina
doaj   +1 more source

Scalar quarkonium and the scalar glueball [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1997
4 pages of Latex, 2 PostScript figures, uses espcrc2.sty which is included, Talk presented at LATTICE96(spectrum)
openaire   +2 more sources

Selection of output inverter for microgrid

open access: yesВестник Самарского государственного технического университета. Серия: Технические науки, 2023
The paper considers the problem of a microgrid output inverter selecting, when information about operating conditions is uncertain. The following factors are considered as sources of uncertainty in information about operating conditions: the possibility ...
Ekaterina E. Mirgorodskaya   +5 more
doaj   +1 more source

MIXING OF SCALAR GLUEBALL AND SCALAR QUARKONIA [PDF]

open access: yesHigh Energy Physics, 2007
The isosinglet scalar mesons $f_0(1710)$, $f_0(1500)$, $f_0(1370)$ and their mixing are studied. Two recent lattice results are employed as the starting point; one is the approximate SU(3) symmetry in the scalar sector above 1 GeV for the connected insertion part without $q\bar q$ annihilation, and the other is the scalar glueball mass at 1710 MeV in ...
openaire   +2 more sources

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