2011/05/31 by T. Koide, T. Kodama · 1 citation
Physics and Astronomy · #cond-mat.stat-mech #hep-ph #hep-th #nucl-th #physics.flu-dyn
paper · pdf · doi:10.1088/1751-8113/45/25/255204
published as J. Phys. A: Math. Theor. 45, 255204 (2012) · 26 pages, no figures, Eq. (52) was corrected, references are added
arxiv created 2011/08/24 · arxiv updated 2013/05/24
The stochastic variational method is applied to particle systems and continuum mediums. As the brief review of this method, we first discuss the application to particle Lagrangians and derive a diffusion-type equation and the Schrödinger equation with the minimum gauge coupling. We further extend the application of the stochastic variational method to Lagrangians of continuum mediums and show that the Navier-Stokes, Gross-Pitaevskii and generalized diffusion equations are derived. The correction term for the Navier-Stokes equation is also obtained in this method. We discuss the meaning of this correction by comparing with the diffusion equation.