Refine
Has Fulltext
- no (24809) (remove)
Year of publication
Document Type
- Article (20506)
- Doctoral Thesis (1415)
- Monograph/Edited Volume (974)
- Other (640)
- Review (581)
- Conference Proceeding (281)
- Part of a Book (221)
- Preprint (105)
- Habilitation Thesis (36)
- Part of Periodical (19)
Language
- English (24809) (remove)
Is part of the Bibliography
- yes (24809) (remove)
Keywords
- climate change (104)
- Germany (73)
- stars: massive (58)
- Climate change (49)
- diffusion (48)
- stars: early-type (48)
- Arabidopsis thaliana (47)
- gamma rays: general (47)
- German (46)
- stars: winds, outflows (45)
Institute
- Institut für Physik und Astronomie (4336)
- Institut für Biochemie und Biologie (4151)
- Institut für Geowissenschaften (2855)
- Institut für Chemie (2484)
- Institut für Mathematik (1399)
- Department Psychologie (1279)
- Institut für Ernährungswissenschaft (897)
- Department Linguistik (769)
- Institut für Informatik und Computational Science (715)
- Wirtschaftswissenschaften (656)
We consider an infinite system of hard balls in Rd undergoing Brownian motions and submitted to a smooth pair potential. It is modelized by an infinite- dimensional Stochastic Differential Equation with an infinite-dimensional local time term. Existence and uniqueness of a strong solution is proven for such an equation with fixed deterministic initial condition. We also show that Gibbs measures are reversible measures.
It is shown that the ff effect of mean-field magnetohydrodynamics, which consists in the generation of a mean electromotive force along the mean magnetic field by turbulently fluctuating parts of velocity and magnetic field, is equivalent to the simultaneous generation of both turbulent and mean-field magnetic helicities, the generation rates being equal in magnitude and opposite in sign. In the particular case of statistically stationary and homogeneous fluctuations this implies that the ff effect can increase the energy in the mean magnetic field only under the condition that also magnetic helicity is accumulated there.