Zobrazeno 1 - 10
of 223 885
pro vyhledávání: '"Time derivative"'
Autor:
Turner, Bethan
Higher Time Derivative Theories are generated by considering space-time rotated KdV and mKdV systems. These systems are then studied to see if/how instabilities, usually associated with higher time derivative theories, manifest on the classical level
Externí odkaz:
http://arxiv.org/abs/2410.13626
Autor:
Fino, Ahmad Z., Hamza, Mohamed Ali
This paper addresses the Cauchy problem for wave equations with scale-invariant time-dependent damping and nonlinear time-derivative terms, modeled as $$\partial_{t}^2u- \Delta u +\frac{\mu}{1+t}\partial_tu= f(\partial_tu), \quad x\in \mathbb{R}^n, t
Externí odkaz:
http://arxiv.org/abs/2409.13353
Publikováno v:
J. High Energ. Phys. 2024, 199 (2024)
We investigate the evolution of localized initial value profiles when propagated in integrable versions of higher time-derivative theories. In contrast to the standard cases in nonlinear integrable systems, where these profiles evolve into a specific
Externí odkaz:
http://arxiv.org/abs/2406.18255
Autor:
Jung, Pilgyu, Kim, Doyoon
We establish the unique solvability of solutions in Sobolev spaces to linear parabolic equations in a more general form than those in the literature. A distinguishing feature of our equations is the inclusion of a half-order time derivative term on t
Externí odkaz:
http://arxiv.org/abs/2407.11305
Autor:
Pathak, Dhruv, Chatterjee, Debarati
With precision pulsar timing, measured values of a large set of pulsar parameters are obtainable. For some of those parameters, such as the time-derivatives of spin or orbital periods (in the case of binary pulsars), the measured values are not the i
Externí odkaz:
http://arxiv.org/abs/2405.13067
Publikováno v:
Universe 2024, 10(5), 198
We compare a relativistic and a nonrelativistic version of Ostrogradsky's method for higher-time derivative theories extended to scalar field theories and consider as an alternative a multi-field variant. We apply the schemes to space-time rotated mo
Externí odkaz:
http://arxiv.org/abs/2403.11949
In this work we study a fractional SEIR biological model of a reaction-diffusion, using the non-singular kernel Caputo-Fabrizio fractional derivative in the Caputo sense and employing the Laplacian operator. In our PDE model, the government seeks imm
Externí odkaz:
http://arxiv.org/abs/2403.00364
Autor:
Goktas, Sertac1 (AUTHOR) sertacgoktas@mersin.edu.tr, Öner, Aslı1 (AUTHOR), Gurefe, Yusuf1 (AUTHOR) yusufgurefe@mersin.edu.tr
Publikováno v:
Fractal & Fractional. Oct2024, Vol. 8 Issue 10, p593. 20p.
Autor:
Lenzi, Ervin K.1,2 (AUTHOR) eklenzi@uepg.br, Rosseto, Michely P.1 (AUTHOR), Gryczak, Derik W.3 (AUTHOR) derikwilliam.gryczak@gmail.com, Evangelista, Luiz R.4,5,6 (AUTHOR) lre@dfi.uem.br, da Silva, Luciano R.2,7 (NURSE), Lenzi, Marcelo K.8 (AUTHOR) lenzi@ufpr.br, Zola, Rafael S.9 (AUTHOR) rzola1@kent.edu
Publikováno v:
Entropy. Aug2024, Vol. 26 Issue 8, p673. 18p.
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-19 (2024)
Abstract We investigate the evolution of localized initial value profiles when propagated in integrable versions of higher time-derivative theories. In contrast to the standard cases in nonlinear integrable systems, where these profiles evolve into a
Externí odkaz:
https://doaj.org/article/13af442e66904d1095be01ea971ea47a