Subject
WKB approximation
5
WKB approximation.
3
quantum mechanics
3
Wave equation.
2
perturbation theory
2
Differential equations, Linear.
1
Feynman diagram
1
Hamilton Jacobi equation
1
Hilbert space
1
Schroedinger equation
1
Tokamak device
1
asymptotic expansion
1
bifurcation
1
boundary value problem
1
harmonic oscillator
1
homogenization
1
magnetic mirror
1
many body problem
1
mathematical method
1
motion
1
numerical solution
1
plasma confinement
1
quantum electrodynamics
1
quantum theory
1
relativistic quantum field theory
1
rotation
1
scattering
1
stability
1
statistical mechanics
1
symmetry
1
wave equation
1