https://doi.org/10.1140/epjp/i2012-12032-0
Review
Nonholonomic relativistic diffusion and exact solutions for stochastic Einstein spaces
Science Department, University “Al. I. Cuza” Iaşi, 54 Lascar Catargi street, 700107, Iaşi, Romania
* e-mail: sergiu.vacaru@uaic.ro
Received:
26
May
2011
Accepted:
17
February
2012
Published online:
19
March
2012
We develop an approach to the theory of nonholonomic relativistic stochastic processes in curved spaces. The Itô and Stratonovich calculus are formulated for spaces with conventional horizontal (holonomic) and vertical (nonholonomic) splitting defined by nonlinear connection structures. Geometric models of the relativistic diffusion theory are elaborated for nonholonomic (pseudo) Riemannian manifolds and phase velocity spaces. Applying the anholonomic deformation method, the field equations in Einstein’s gravity and various modifications are formally integrated in general forms, with generic off-diagonal metrics depending on some classes of generating and integration functions. Choosing random generating functions we can construct various classes of stochastic Einstein manifolds. We show how stochastic gravitational interactions with mixed holonomic/nonholonomic and random variables can be modelled in explicit form and study their main geometric and stochastic properties. Finally, the conditions when non-random classical gravitational processes transform into stochastic ones and inversely are analyzed.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2012
