Results 31 to 40 of about 493,883 (292)

Study of instability of the Fourier split-step method for the massive Gross–Neveu model [PDF]

open access: yesJournal of Computational Physics, 2020
Stability properties of the well-known Fourier split-step method used to simulate a soliton and similar solutions of the nonlinear Dirac equations, known as the Gross--Neveu model, are studied numerically and analytically. Three distinct types of numerical instability that can occur in this case, are revealed and explained. While one of these types can
openaire   +2 more sources

Fourier methods for the perturbed harmonic oscillator in linear and nonlinear Schr\"odinger equations [PDF]

open access: yes, 2011
We consider the numerical integration of the Gross-Pitaevskii equation with a potential trap given by a time-dependent harmonic potential or a small perturbation thereof.
C. J. Pethick   +5 more
core   +1 more source

Forces required to vertically uproot tree stumps

open access: yesSilva Fennica, 2010
Stumpwood attracts renewed interest due to increased use of forest biomass for bioenergy. In Nordic countries stumps are generally uprooted with crawler excavators, which have strong cranes (ca. 400 kNm gross lift torque), but are not designed for moving
Lindroos, Ola   +3 more
doaj   +1 more source

Katz type p-adic L-functions for primes p non-split in the CM field

open access: yes, 2021
For every triple F,K,p where F is a classical elliptic eigenform, K is a quadratic imaginary field and p> 3 is a prime integer which is not split in K, we attach a p-adic L function which interpolates the algebraic parts of the special values of the ...
Andreatta, Fabrizio, Iovita, Adrian
core  

Convergence analysis of high-order time-splitting pseudo-spectral methods for rotational Gross–Pitaevskii equations [PDF]

open access: yesNumerische Mathematik, 2013
A convergence analysis of time-splitting pseudo-spectral methods adapted for time-dependent Gross-Pitaevskii equations with additional rotation term is given. For the time integration high-order exponential operator splitting methods are studied, and the space discretization relies on the generalized-Laguerre-Fourier spectral method with respect to the
Hofstätter, Harald   +4 more
openaire   +3 more sources

The Gross Pitaevski map as a chaotic dynamical system

open access: yes, 2017
The Gross Pitaevski map is a discrete time, split operator version of the Gross Pitaevski dynamics in the circle, for which exponential instability has been recently reported. Here it is studied as a classical dynamical system in its own right.
Guarneri, Italo
core   +1 more source

Analisis Keekonomian Blok NSRN Dengan Menggunakan PSC Gross Split Dan Penambahan Diskresi

open access: yesPETRO:Jurnal Ilmiah Teknik Perminyakan, 2020
Berdasarkan Peraturan Menteri ESDM RI No. 52/2017, Kontrak bagi hasil (Production Sharing Contract) yang digunakan di Indonesia ialah PSC Gross Split. Kontrak Kerja Sama ini merupakan pengganti Kontrak Kerja Sama yang digunakan sebelumnya, yakni PSC Cost Recovery.
Nisrina Afiati   +2 more
openaire   +2 more sources

Population bottlenecks as a potential major shaping force of human genome architecture. [PDF]

open access: yesPLoS Genetics, 2007
The modern synthetic view of human evolution proposes that the fixation of novel mutations is driven by the balance among selective advantage, selective disadvantage, and genetic drift.
Adrian Gherman   +9 more
doaj   +1 more source

Reducing tillage does not affect the long-term profitability of organic or conventional field crop systems

open access: yesFrontiers in Sustainable Food Systems, 2023
Reducing tillage and supporting continuous living cover (CLC) can improve agroecosystem sustainability under both organic and conventional field crop production.
Kirsten A. Pearsons   +5 more
doaj   +1 more source

Ground Band and a Generalized GP-equation for Spinor Bose-Einstein Condensates [PDF]

open access: yes, 2004
For the spinor Bose-Einstein condensates both the total spin $S$ and its Z-component $S_{Z}$ should be conserved. However, in existing theories, only the conservation of $S_{z}$ has been taken into account.
C. G. Bao, E. Goldstein, Z. B. Li
core   +1 more source

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