Results 11 to 20 of about 336,880 (200)
Electric–magnetic symmetry and Noether's theorem [PDF]
New Journal of Physics, 2012 In the absence of charges, Maxwell's equations are highly symmetrical. In particular, they place the electric and magnetic fields on equal footing.
Robert P Cameron, Stephen M Barnett
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Journal of High Energy PhysicsThe BRST Noether theorem, or “Noether’s 1.5 theorem”, asserts the triviality of the BRST Noether current. We provide two proofs of this theorem that are both valid without restriction on the structure of the gauge theory, extending thereby previous ...
Glenn Barnich +3 more
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Stochastic fractal and Noether's theorem [PDF]
Physical Review E, 2021 We consider the binary fragmentation problem in which, at any breakup event, one of the daughter segments either survives with probability $p$ or disappears with probability $1\!-\!p$. It describes a stochastic dyadic Cantor set that evolves in time, and eventually becomes a fractal.
Rakibur Rahman +4 more
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Noether’s Theorem and Symmetry [PDF]
Symmetry, 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
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A Stochastic Version of the Noether Theorem [PDF]
Foundations of Physics, 2018 A stochastic version of the Noether Theorem is derived for systems under the action of external random forces. The concept of moment generating functional is employed to describe the symmetry of the stochastic forces. The theorem is applied to two kinds of random covariant forces.
Alfredo González Lezcano +1 more
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A Non-Newtonian Noether's Symmetry Theorem [PDF]
, 2021 The universal principle obtained by Emmy Noether in 1918, asserts that the invariance of a variational problem with respect to a one-parameter family of symmetry transformations implies the existence of a conserved quantity along the Euler-Lagrange ...
Torres, Delfim F. M. +1 more
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Noether's Theorem and Symmetry [PDF]
, 2020 In Noether's original presentation of her celebrated theorem of 1918, allowances were made for the dependence of the coefficient functions of the differential operator which generated the infinitesimal transformation of the Action Integral upon the ...
Paliathanasis, Andronikos, Leach, P.G.L.
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Non-local Lagrangian fields: Noether's theorem and Hamiltonian formalism [PDF]
, 2022 This article aims to study non-local Lagrangians with an infinite number of degrees of freedom. We obtain an extension of Noether's theorem and Noether's identities for such Lagrangians. We then set up a Hamiltonian formalism for them.
Heredia, Carlos +3 more
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Variance of fluctuations from Noether invariance
Communications 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
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Diffeomorphism Covariance of the Canonical Barbero–Immirzi–Holst Triad Theory
Universe, 2023 The vanishing phase space generator of the full four-dimensional diffeomorphism-related symmetry group in the context of the Barbero–Immirz–Holst Lagrangian is derived directly, for the first time, from Noether’s second theorem.
Donald Salisbury
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