Instantons and intermittency
نویسندگان
چکیده
منابع مشابه
Instantons and intermittency.
We describe the method for finding the non-Gaussian tails of the probability distribution function ~PDF! for solutions of a stochastic differential equation, such as the convection equation for a passive scalar, the random driven Navier-Stokes equation, etc. The existence of such tails is generally regarded as a manifestation of the intermittency phenomenon. Our formalism is based on the WKB ap...
متن کاملTorus fractalization and intermittency.
The bifurcation transition is studied for the onset of intermittency analogous to the Pomeau-Manneville mechanism of type I, but generalized for the presence of a quasiperiodic external force. The analysis is concentrated on the torus-fractalization (TF) critical point that occurs at some critical amplitude of driving. (At smaller amplitudes the bifurcation corresponds to a collision and subseq...
متن کاملIntermittency and exotic channels.
It is pointed out that accurate measurements of short-range two-particle correlations in like-charge Kπ and in π 0 π 0 channels should be very helpful in determining the origin of the " intermittency " phenomenon observed recently for the like-charge pion pairs.
متن کاملDualities and fivebrane instantons
We derive the fivebrane instanton corrections to the hypermultiplet moduli space MH of Calabi-Yau string vacua using S-duality symmetry of the type IIB formulation. The result is given in terms of a set of holomorphic functions on the twistor space of MH . It contains not only all orders of the instanton expansion, but also takes into account the presence of D1-D(-1)-brane instantons. Furthermo...
متن کاملLaplacian gauge and instantons
Topological excitations produce obstructions to making the gauge field smooth everywhere. Therefore, they should appear as singularities in an otherwise smooth gauge. This offers the possibility of identifying such excitations via gaugefixing. After gauge-fixing, the gauge field becomes singular, and the gauge ill-defined, on a sub-manifold characterizing the topological excitations. Even thoug...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 1996
ISSN: 1063-651X,1095-3787
DOI: 10.1103/physreve.54.4896