Physics – Mathematical Physics
Scientific paper
2003-01-28
in: A. V. Stoyanovsky, Introduction to the mathematical principles of quantum field theory, Editorial URSS, Moscow, 2007 (in R
Physics
Mathematical Physics
12 pages; formulation and solution of the Cauchy problem for the generalized Hamilton--Jacobi equation added
Scientific paper
A number of equations is deduced which describe propagation of excitations along $n$-dimensional surfaces in $R^N$. Usual excitations in wave theory propagate along 1-dimensional trajectories. The role of the medium of propagation of excitations considered in this paper is played by the infinite dimensional space of $(n-1)$-dimensional surfaces in $R^N$. The role of rays is played by $n$-dimensional solution surfaces of the variational problem. Such a generalization of wave theory can be useful in quantum field theory. Among these equations are the generalized Hamilton--Jacobi equation (known in particular cases in the literature), generalized canonical Hamilton equations, and generalized Schrodinger equation. Besides that, a theory of integration of the generalized Hamilton--Jacobi equation is developed.
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