"If there would be no God then what a staff-captain am I?" said one of the characters in a novel by Dostoevskii. In a similar way we can exclaim: "If there would be no nonlinearity than what physics would that be'?". Really, the most interesting and exciting effects are described by non- linear equations, and vanish in the linear approximation. For example, the general theory of relativity by A.Einstein comes to mind first - one of the most beautiful physical theories, which is in fact essentially nonlinear. Next, the phase transitions crystal liquid and liquid gas are due to the anhar- monicity of inter-particle interactions, to dissociation and infinite motion. Similarly, transitions into the superconducting state or the superftuid would be impossible with purely harmonic interaction potentials. Another bril- liant achievement in nonlinear physics was the construction of a laser and the subsequent development of nonlinear optics. The latter describes the in- teraction of the matter with light of super-high intensity, when multi-quanta intra-molecular transitions become essential. Last, we should note here the very beautiful mathematical theory the theory of catastrophes. Its subject is the study of invariant general properties of multi-dimensional surfaces in the vicinity of bifurcation points with respect to continuous transformations.
Author: Alexander A. Ovchinnikov |
Publisher: Springer |
Publication Date: Sep 25, 2012 |
Number of Pages: 355 pages |
Binding: Paperback or Softback |
ISBN-10: 1461354943 |
ISBN-13: 9781461354949 |