Results 11 to 20 of about 1,695 (179)

Noether's Theorem in Multisymplectic Geometry

open access: yesDifferential Geometry and its Applications, 2017
We extend Noether's theorem to the setting of multisymplectic geometry by exhibiting a correspondence between conserved quantities and continuous symmetries on a multi-Hamiltonian system.
Herman, Jonathan
core   +2 more sources

Stochastic fractal and Noether's theorem [PDF]

open access: yesPhysical Review E, 2021
11 pages, 6 captioned figures each containing 2 ...
Rakibur Rahman   +4 more
openaire   +5 more sources

Noether’s Theorem and Symmetry [PDF]

open access: yesSymmetry, 2018
In Noether’s original presentation of her celebrated theorem of 1918, allowance was made for the dependence of the coefficient functions of the differential operator, which generated the infinitesimal transformation of the action integral upon the derivatives of the dependent variable(s), the so-called generalized, or dynamical, symmetries.
Amlan K. Halder   +2 more
openaire   +2 more sources

Generalized symmetries and Noether’s theorem in QFT

open access: yesJournal of High Energy Physics, 2022
We show that generalized symmetries cannot be charged under a continuous global symmetry having a Noether current. Further, only non-compact generalized symmetries can be charged under a continuous global symmetry.
Valentin Benedetti   +2 more
doaj   +1 more source

Noether’s theorem for Herglotz type variational problems utilizing complex fractional derivatives [PDF]

open access: yesTheoretical and Applied Mechanics, 2021
This is a review article which elaborates the results presented in [1], where the variational principle of Herglotz type with a Lagrangian that depends on fractional derivatives of both real and complex orders is formulated and the invariance of this ...
Janev Marko   +2 more
doaj   +1 more source

Noether's Symmetry Theorem for Variational and Optimal Control Problems with Time Delay [PDF]

open access: yes, 2012
We extend the DuBois-Reymond necessary optimality condition and Noether's symmetry theorem to the time delay variational setting. Both Lagrangian and Hamiltonian versions of Noether's theorem are proved, covering problems of the calculus of variations ...
D. F. M. Torres   +23 more
core   +2 more sources

Variance of fluctuations from Noether invariance

open access: yesCommunications Physics, 2022
Noether’s theorem allows to find conservation laws corresponding to the symmetries of the system. The authors theoretically derive an exact relation of the variance of external force in statistical mechanics, using Noether invariance, providing a ...
Sophie Hermann, Matthias Schmidt
doaj   +1 more source

A new perspective on spacetime 4D rotations and the SO(4) transformation group

open access: yesResults in Physics, 2019
In quantum field theory, every conservation law is enforced by adequate symmetries. The Lorentz group, which represents two continuous symmetries: rotations in 3D Euclidean space and Lorentz boosts, generates conservation of the angular momentum tensor ...
Mikołaj Myszkowski
doaj   +1 more source

Comment on 'Conservation laws of higher order nonlinear PDEs and the variational conservation laws in the class with mixed derivatives' [PDF]

open access: yes, 2010
In a recent paper (R Narain and A H Kara 2010 J. Phys. A: Math. Theor. 43 085205), the authors claim to be applying Noether's theorem to higher-order partial differential equations and state that in a large class of examples 'the resultant conserved ...
Sarlet, Willy
core   +1 more source

The variational symmetries and conservation laws in classical theory of Heisenberg (anti)ferromagnet [PDF]

open access: yes, 2002
The nonlinear partial differential equations describing the spin dynamics of Heisenberg ferro and antiferromagnet are studied by Lie transformation group method.
A.S. Ovchinnikov   +15 more
core   +2 more sources

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