Results 31 to 40 of about 71,271 (229)

About one algorithm of C2 interpolation using quartic splines [PDF]

open access: yesComputer Science Journal of Moldova, 2009
The problem of C2 interpolation of a discrete set of data on the interval [a,b] representing the function f using quartic splines is investigated.
Igor Verlan
doaj  

Convergence of Integro Quartic and Sextic B-Spline interpolation [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this paper, quadratic and sextic B-splines are used to construct an approximating function based on the integral values instead of the function values at the knots.
Jafar Ahmadi Shali   +3 more
doaj   +1 more source

Scalar correlation functions in de Sitter space from the stochastic spectral expansion [PDF]

open access: yes, 2019
We consider light scalar fields during inflation and show how the stochastic spectral expansion method can be used to calculate two-point correlation functions of an arbitrary local function of the field in de Sitter space.
Markkanen, Tommi   +3 more
core   +2 more sources

Quintessence dark energy from strongly-coupled higgs mass gap: local and non-local higher-derivative non-perturbative scenarios

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We entertain the possibility that dark energy arises from the Higgs field of quintessence type in the non-perturbative regimes. For this purpose we utilize a set of exact solutions of Higgs field theory recently devised, in terms of Jacobi elliptical ...
Marco Frasca   +2 more
doaj   +1 more source

Green Functions for the Wrong-Sign Quartic [PDF]

open access: yesInternational Journal of Theoretical Physics, 2010
It has been shown that the Schwinger-Dyson equations for non-Hermitian theories implicitly include the Hilbert-space metric. Approximate Green functions for such theories may thus be obtained, without having to evaluate the metric explicitly, by truncation of the equations.
openaire   +2 more sources

Stability of Quartic Functional Equations in the Spaces of Generalized Functions [PDF]

open access: yesAdvances in Difference Equations, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lee Y.-S., Chung S.-Y.
openaire   +4 more sources

κ-Poincaré invariant orientable field theories at one-loop

open access: yesJournal of High Energy Physics, 2019
We consider a family of κ-Poincaré invariant scalar field theories on 4-d κ-Minkowski space with quartic orientable interaction, that is for which ϕ and its conjugate ϕ † alternate in the quartic interaction, and whose kinetic operator is the square of a
Timothé Poulain, Jean-Christophe Wallet
doaj   +1 more source

Quartic AdS Interactions in Higher-Spin Gravity from Conformal Field Theory

open access: yes, 2015
Clarifying the locality properties of higher-spin gravity is a pressing task, but notoriously difficult due to the absence of a weakly-coupled flat regime. The simplest non-trivial case where this question can be addressed is the quartic self-interaction
Bekaert, Xavier   +3 more
core   +3 more sources

Self-interacting multistate boson stars

open access: yesJournal of High Energy Physics, 2021
In this paper, we consider rotating multistate boson stars with quartic self-interactions. In contrast to the nodeless quartic-boson stars in [1], the self-interacting multistate boson stars (SIMBSs) have two types of nodes, including the 1 S 2 S and 1 S
Hong-Bo Li   +3 more
doaj   +1 more source

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