Results 11 to 20 of about 7,905,165 (291)

Critical Combinations of Higher-Order Terms in Einstein-Maxwell Theory and Compactification [PDF]

open access: yesAdvances in High Energy Physics, 2015
We discuss the role of a particular combination of higher derivative terms in higher dimensional theories, particularly in the background of spontaneous compactification. Two classes of theories are proposed in this paper.
Nahomi Kan, Kiyoshi Shiraishi
doaj   +4 more sources

A radiative seesaw model with higher order terms under an alternative U(1)B−L

open access: yesPhysics Letters B, 2018
We propose a model based on an alternative U(1)B−L gauge symmetry with 5 dimensional operators in the Lagrangian, and we construct the neutrino masses at one-loop level, and discuss lepton flavor violations, dark matter, and the effective number of ...
Takaaki Nomura, Hiroshi Okada
doaj   +3 more sources

Black Hole Thermodynamics and Generalized Uncertainty Principle with Higher Order Terms in Momentum Uncertainty

open access: yesAdvances in High Energy Physics, 2018
We study the modification of thermodynamic properties of Schwarzschild and Reissner-Nordström black hole in the framework of generalized uncertainty principle with correction terms up to fourth order in momentum uncertainty. The mass-temperature relation
Sunandan Gangopadhyay, Abhijit Dutta
doaj   +2 more sources

Higher-Order Kerr Terms Allow Ionization-Free Filamentation in Gases

open access: yesPhysical Review Letters, 2010
We show that higher-order nonlinear indices ($n_4$, $n_6$, $n_8$, $n_{10}$) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and Argon at 800 nm, in contrast with the previously accepted mechanism of filamentation where plasma was considered as the dominant defocusing process.
Béjot, P.   +8 more
openaire   +12 more sources

Higher Order Terms in Multiscale Expansions: A Linearized KdV Hierarchy [PDF]

open access: yesJournal of Nonlinear Mathematical Physics, 2002
We consider a wide class of model equations, able to describe wave propagation in dispersive nonlinear media. The Korteweg-de Vries (KdV) equation is derived in this general frame under some conditions, the physical meanings of which are clarified. It is obtained as usual at leading order in some multiscale expansion.
Leblond, H.
openaire   +8 more sources

A Reduction Ordering for Higher-Order Terms [PDF]

open access: yes, 1999
We investigate one of the classical problems of the theory of term rewriting, namely termination. We present an ordering for comparing higher-order terms that can be utilized for testing termination and decreasingness of higher-order conditional term rewriting systems.
Avenhaus, Jürgen   +2 more
openaire   +2 more sources

Review of the Influence of non-singular higher order terms on the stress field of thin welded lap joints and small inclined cracks in plates [PDF]

open access: yesFracture and Structural Integrity, 2017
In stress analysis of cracked plates, alongside the stress intensity factor which quantifies the singular stress component perpendicular to the crack plane, the role played in crack growth by the constant term parallel to the crack plane, called the T ...
F. Berto   +3 more
doaj   +3 more sources

A new mechanism for freezing extra dimensions with higher-order curvature terms

open access: yesPhysics Letters B, 2020
We construct a model of higher dimensional cosmology in which extra dimensions are frozen by virtue of the cubic-order Lovelock gravity throughout the cosmic history from inflation to the present with radiation and matter-dominated regimes in between.
Hiroaki W.H. Tahara   +2 more
doaj   +1 more source

About Boundary Terms in Higher Order Theories [PDF]

open access: yes, 2011
It is shown that when in a higher order variational principle one fixes fields at the boundary leaving the field derivatives unconstrained, then the variational principle (in particular the solution space) is not invariant with respect to the addition of boundary terms to the action, as it happens instead when the correct procedure is applied. Examples
FATIBENE, Lorenzo   +2 more
openaire   +3 more sources

The Solution of a System of Higher-Order Difference Equations in Terms of Balancing Numbers

open access: yesPan-American Journal of Mathematics, 2023
In this paper, we are interested in the closed-form solution of the following system of nonlinear difference equations of higher order, un+1 = 1/34-vn-m , vn+1 = 1/34-un-m, n, m ∈ N0, and the initial values u-j and v-j , j∈{0, 1, ..., m} are real numbers
Ahmed Ghezal, Imane Zemmouri
doaj   +1 more source

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