@inproceedings{a2e00247c6794cffbd5d1a4a51f08298,

title = "Metage symmetry group of non-barotropic magnetohydrodynamics and the conservation of cross helicity",

abstract = "Standard cross helicity is not conserved in non-barotropic magnetohydrodynamics (MHD) (as opposed to barotropic or incompressible MHD). It was shown that a new kind of cross helicity which is conserved in the non barotropic case can be introduced. The non barotropic cross helicity reduces to the standard cross helicity under barotropic assumptions. Here we show that the new cross helicity can be deduced from a variational principle using the Noether{\textquoteright}s theorem. The symmetry group associated with the new cross helicity is related to translation in a labelling of the flow elements connected to the magnetic field lines known as magnetic metage.",

keywords = "Cross helicity, Magnetohydrodynamics, Metage, Symmetry group, Topological conservation laws",

author = "Asher Yahalom",

note = "Publisher Copyright: {\textcopyright} Springer Nature Singapore Pte Ltd. 2018.; International Symposium on Quantum Theory and Symmetries, QTS-X and XII 2017 and International Workshop on Lie Theory and Its Applications in Physics, LT-XII 2017 ; Conference date: 19-06-2017 Through 25-06-2017",

year = "2018",

doi = "10.1007/978-981-13-2179-5_30",

language = "אנגלית",

isbn = "9789811321788",

series = "Springer Proceedings in Mathematics and Statistics",

pages = "387--402",

editor = "Vladimir Dobrev",

booktitle = "Quantum Theory and Symmetries with Lie Theory and Its Applications in Physics Volume 2 - QTS-X/LT-XII, 2017",

}