Zobrazeno 1 - 10
of 312
pro vyhledávání: '"A. Winterroth"'
Autor:
Palese, Marcella, Winterroth, Ekkehart
Publikováno v:
Int. Jour. Geom. Meth. Mod. Phys. 19 (03) (2022) 2250032
We study a set of cohomology classes which emerge in the cohomological formulations of the calculus of variations as obstructions to the existence of (global) solutions of the Euler--Lagrange equations of Chern--Simons gauge theories in higher dimens
Externí odkaz:
http://arxiv.org/abs/2111.09247
Autor:
Winterroth, Ekkehart
In cohomological formulations of the calculus of variations obstructions to the existence of (global) solutions of the Euler--Lagrange equations can arise in principle. It seems, however, quite common to assume that such obstructions always vanish, a
Externí odkaz:
http://arxiv.org/abs/2103.03037
Autor:
Palese, Marcella, Winterroth, Ekkehart
Publikováno v:
Nuclear Physics B 960 (2020) 115187
We prove that with a $(2+1)$-dimensional Toda type system are associated algebraic skeletons which are (compatible assemblings) of particle-like Lie algebras of dyons and triadons type. We obtain trix-coaxial and dyx-coaxial Lie algebra structures fo
Externí odkaz:
http://arxiv.org/abs/2006.14227
Autor:
Palese, Marcella, Winterroth, Ekkehart
Publikováno v:
Int. J. Geom. Methods Mod. Phys. 16 (03) 1950049 (2019)
We address some new issues concerning spontaneous symmetry breaking. We define classical Higgs fields for gauge-natural invariant Yang--Mills type Lagrangian field theories through the requirement of the existence of {\em canonical} covariant gauge-n
Externí odkaz:
http://arxiv.org/abs/1901.06184
Autor:
Palese, Marcella, Winterroth, Ekkehart
Publikováno v:
Journal of Mathematical Physics 58, 023502 (2017)
We relate the existence of Noether global conserved currents associated with locally variational field equations to existence of global solutions for a local variational problem generating global equations. Both can be characterized as the vanishing
Externí odkaz:
http://arxiv.org/abs/1608.05789
Publikováno v:
Int. J. Geom. Methods Mod. Phys. 13 (8) (2016) 1650067
The variational Lie derivative of classes of forms in the Krupka's variational sequence is defined as a variational Cartan formula at any degree, in particular for degrees lesser than the dimension of the basis manifold. As an example of application
Externí odkaz:
http://arxiv.org/abs/1601.07193
Autor:
Palese, M., Winterroth, E.
We will read, through the Emmy Noether paper and the two concepts of `proper' and `improper' conservation laws, the problem, posed by Hilbert, of the nature of the law of conservation of energy in the theory of General Relativity. Epistemological iss
Externí odkaz:
http://arxiv.org/abs/1601.02847
Publikováno v:
IJGMMP Vol. 10, No. 1 (2013) 1220024 (10 pages)
We consider systems of local variational problems defining non vanishing cohomolgy classes. In particular, we prove that the conserved current associated with a generalized symmetry, assumed to be also a symmetry of the variation of the corresponding
Externí odkaz:
http://arxiv.org/abs/1512.03176
Publikováno v:
SIGMA 12 (2016), 045, 45 pages
This paper is a review containing new original results on the finite order variational sequence and its different representations with emphasis on applications in the theory of variational symmetries and conservation laws in physics.
Externí odkaz:
http://arxiv.org/abs/1508.01752
Autor:
Palese, M., Winterroth, E.
Publikováno v:
Acta Polytechnica 51 (1) (2011) 54-58
A tower for a (2+1)-dimensional Toda type system is constructed in terms of a series expansion of operators which can be interpreted as generalized Bessel coefficients; the result is formulated as an analog of the Baker-Campbell-Hausdorff formula. We
Externí odkaz:
http://arxiv.org/abs/1310.4947