Zobrazeno 1 - 10
of 171
pro vyhledávání: '"J. Niederle"'
Autor:
J. Niederle
Publikováno v:
Bothalia: African Biodiversity & Conservation, Vol 42, Iss 1 (2012)
Corpuscularia gracillima is the correct binomial for the illegitimate C. gracilis.
Externí odkaz:
https://doaj.org/article/f06af308c0914bff96000923ebbb35d5
Publikováno v:
Acta Polytechnica, Vol 50, Iss 3 (2010)
Two Maxwell-Chern-Simons (MCS) models in the (1 + 3)-dimensional space-space are discussed and families of their exact solutions are found. In contrast to the Carroll-Field-Jackiw (CFE) model [2] these systems are relativistically invariant and inclu
Externí odkaz:
https://doaj.org/article/d22c4778fcca4d8891d5845072102856
Akademický článek
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Autor:
J. Niederle, A. G. Nikitin
Publikováno v:
Czechoslovak Journal of Physics. 56:1243-1250
We discuss finite-dimensional representations of the homogeneous Galilei group which, when restricted to its subgroup SO(3), are decomposed to spin 0, 1/2 and 1 representations. In particular we explain how these representations were obtained in our
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23953afd2bdd4b6812758cf154f4001e
https://doi.org/10.1007/s10582-006-0432-8
https://doi.org/10.1007/s10582-006-0432-8
Autor:
J. Niederle, A. G. Nikitin
Publikováno v:
Journal of Physics A: Mathematical and General. 39:10931-10944
Using relativistic tensor-bispinorial equations proposed in hep-th/0412213 we solve the Kepler problem for a charged particle with arbitrary half-integer spin interacting with the Coulomb potential.
Misprints are corrected
Misprints are corrected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbcb541edc2e8c2a6d85e85d0d389541
https://doi.org/10.1088/0305-4470/39/34/023
https://doi.org/10.1088/0305-4470/39/34/023
Publikováno v:
Journal of Physics A: Mathematical and General. 39:9365-9385
All indecomposable finite-dimensional representations of the homogeneous Galilei group which when restricted to the rotation subgroup are decomposed to spin 0, 1/2 and 1 representations are constructed and classified. These representations are also o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87ef0e7089f62f2b3ff707e82fe931e0
https://doi.org/10.1088/0305-4470/39/29/026
https://doi.org/10.1088/0305-4470/39/29/026
Publikováno v:
Nuclear Physics B. 677:485-500
We find, at the Lagrangian off-shell level, the explicit equivalence transformation which relates the conformal mechanics of De Alfaro, Fubini and Furlan to the conformal mechanics describing the radial motion of the charged massive particle in the B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd4efb002abf3de63986c1a84528ca38
https://doi.org/10.1016/j.nuclphysb.2003.10.015
https://doi.org/10.1016/j.nuclphysb.2003.10.015
Autor:
A. G. Nikitin, J. Niederle
Publikováno v:
Journal of Mathematical Physics. 40:1280-1293
It is argued that extended, reducible, and generalized supersymmetry (SUSY) are common in many systems of standard nonrelativistic quantum mechanics. For example, it is proved that a well-studied quantum mechanical system of a spin-12 particle intera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebe50347334cdff77b03ae3c8ec12a72
https://doi.org/10.1063/1.532801
https://doi.org/10.1063/1.532801
Autor:
J. Niederle, A. G. Nikitin
Publikováno v:
Journal of Physics A: Mathematical and General. 32:5141-5155
We classify and explicitly construct all the irreducible hermitian representations of the extended Poincar?parasuperalgebra. These representations which include the representations of the usual extended Poincar?superalgebra as a particular case can s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d3c41b175f5a28d72a53781ce29d9d8
https://doi.org/10.1088/0305-4470/32/27/312
https://doi.org/10.1088/0305-4470/32/27/312
Autor:
A. G. Nikitin, J. Niederle
Publikováno v:
Journal of Physics A: Mathematical and General. 30:999-1010
A new algebra of involutive symmetries of the Dirac equation is found. This algebra is used to reduce the Dirac equation for a charged particle, interacting with an external field and to describe hidden supersymmetries of this equation. Reducibility
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c00a93e14b7e0282b7787bb7f46c659
https://doi.org/10.1088/0305-4470/30/3/022
https://doi.org/10.1088/0305-4470/30/3/022