[Flots géodésiques collectifs]
On démontre que la plupart des groupes de Lie semi-simples et compacts, admettent plusieurs métriques riemanniennes invariantes à gauche dont le flot géodésique possède une entropie topologique positive. De plus, on démontre que, sur la plupart des espaces homogènes, il existe dans chaque voisinage de la métrique bi-invariante, des métriques riemanniennes "collectives", dont le flot géodésique possède une entropie topologique positive. On discute des autres propriétés du flot géodésique collectif.
We show that most compact semi-simple Lie groups carry many left invariant metrics with positive topological entropy. We also show that many homogeneous spaces admit collective Riemannian metrics arbitrarily close to the bi-invariant metric and whose geodesic flow has positive topological entropy. Other properties of collective geodesic flows are also discussed.
Keywords: collective geodesic flows, topological entropy, semi-simple Lie algebras, moment map, Melnikov integral
Mot clés : flots géodésiques collectifs, entropie topologique, algèbres de Lie semi-simples, application du moment, intégrale de Melnikov
Butler, Léo T. 1 ; Paternain, Gabriel P. 2
@article{AIF_2003__53_1_265_0, author = {Butler, L\'eo T. and Paternain, Gabriel P.}, title = {Collective geodesic flows}, journal = {Annales de l'Institut Fourier}, pages = {265--308}, publisher = {Association des Annales de l{\textquoteright}institut Fourier}, volume = {53}, number = {1}, year = {2003}, doi = {10.5802/aif.1944}, zbl = {1066.53135}, mrnumber = {1973073}, language = {en}, url = {https://aif.centre-mersenne.org/articles/10.5802/aif.1944/} }
TY - JOUR AU - Butler, Léo T. AU - Paternain, Gabriel P. TI - Collective geodesic flows JO - Annales de l'Institut Fourier PY - 2003 SP - 265 EP - 308 VL - 53 IS - 1 PB - Association des Annales de l’institut Fourier UR - https://aif.centre-mersenne.org/articles/10.5802/aif.1944/ DO - 10.5802/aif.1944 LA - en ID - AIF_2003__53_1_265_0 ER -
%0 Journal Article %A Butler, Léo T. %A Paternain, Gabriel P. %T Collective geodesic flows %J Annales de l'Institut Fourier %D 2003 %P 265-308 %V 53 %N 1 %I Association des Annales de l’institut Fourier %U https://aif.centre-mersenne.org/articles/10.5802/aif.1944/ %R 10.5802/aif.1944 %G en %F AIF_2003__53_1_265_0
Butler, Léo T.; Paternain, Gabriel P. Collective geodesic flows. Annales de l'Institut Fourier, Tome 53 (2003) no. 1, pp. 265-308. doi : 10.5802/aif.1944. https://aif.centre-mersenne.org/articles/10.5802/aif.1944/
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