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Research talks;Partial Differential Equations;Mathematical Physics

The momentum transport in a fusion device such as a tokamak has been in a scope of the interest during last decade. Indeed, it is tightly related to the plasma rotation and therefore its stabilization, which in its turn is essential for the confinement improvement. The intrinsic rotation, i.e. the part of the rotation occurring without any external torque is one of the possible sources of plasma stabilization.
The modern gyrokinetic theory [3] is an ubiquitous theoretical framework for lowfrequency fusion plasma description. In this work we are using the field theory formulation of the modern gyrokinetics [1]. The main attention is focussed on derivation of the momentum conservation law via the Noether method, which allows to connect symmetries of the system with conserved quantities by means of the infinitesimal space-time translations and rotations.
Such an approach allows to consistently keep the gyrokinetic dynamical reduction effects into account and therefore leads towards a complete momentum transport equation.
Elucidating the role of the gyrokinetic polarization is one of the main results of this work. We show that the terms resulting from each step of the dynamical reduction (guiding-center and gyrocenter) should be consistently taken into account in order to establish physical meaning of the transported quantity. The present work [2] generalizes previous result obtained in [4] by taking into the account purely geometrical contributions into the radial polarization.
The momentum transport in a fusion device such as a tokamak has been in a scope of the interest during last decade. Indeed, it is tightly related to the plasma rotation and therefore its stabilization, which in its turn is essential for the confinement improvement. The intrinsic rotation, i.e. the part of the rotation occurring without any external torque is one of the possible sources of plasma stabilization.
The modern gyrokinetic theory [3] ...

82D10 ; 82C40 ; 35L65 ; 35Q83 ; 70S10

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- 311 p.
ISBN 978-83-86806-34-8

Banach center publications , 0110

Localisation : Salle des périodiques 1er étage

équation de Hamilton-Poincaré # équation de Hamilton-Jacobi # mécanique géométrique # dynamique hamiltonienne # algèbre de Lie # fonction de Wigner # théorème de Malus-Dupin # mécanique de Tulczyjew # théorème de Noether

70S05 ; 70S10 ; 37J35 ; 70H06 ; 35F21 ; 35Q40 ; 81Q05 ; 53D05 ; 70H15 ; 70H25 ; 53D12 ; 17B56 ; 83C40 ; 81S10 ; 53D17 ; 22A22 ; 17B99 ; 70H99 ; 17A70 ; 58A50 ; 13F25 ; 16L30 ; 58J52 ; 15A66 ; 11R52 ; 58A99 ; 53C99 ; 13N99 ; 17B20 ; 17B01

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- 133 p.
ISBN 978-0-8218-3764-1

Memoirs of the american mathematical society , 0838

Localisation : Collection 1er étage

système hamiltonien # groupe de Lie # variété # espace symétrique # fibré des repères orthonormal # courbe élastique # contrôle optimal # intégralité # orbit co-adjoint

51N30 ; 53C30 ; 53D05 ; 70S10

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- xi; 359 p.
ISBN 978-0-19-857062-2

Oxford graduate texts in mathematics , 0019

Localisation : Ouvrage RdC (DUNA)

soliton # instanton # géométrie différentielle # mouvement ondulatoire # théorie des torseurs # équation aux dérivées partielles # champs de jauge # système intégrable # théorie de Yang-Mills

35Q51 ; 35-02 ; 53C44 ; 53C28 ; 70S10 ; 70S15

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