LECTURES  ON  PATH   INTEGRALS


Introduction.

Lecture    1.

Equation for the Green function and the path integral. Hamiltonian and Langrangian.
Linear oscillator. Classical Limit.

Lecture 2.

 Particlle in a Box. "Cucumber" problem

  Lecture 3

  WKB approximation. Over-barrier Reflections

  Lecture 4

   Semiclassical Green's Function.  Over-Barrier Reflection.

  Lecture 5.

 Density Matrix and Green Function. Energy Levels and Eigenfunctions.
 Over Barrier Reflection. Instanton

 Lecture 6.

Relativistic Quantum Mechanics. Dirac Equation. Non-relativistic Limit.
Pauli Equation. Pair Creation in Electric Field.

Lecture 7.

Path Integral on a Compact Manyfold. Rotor. Hydrogen Atom

Lecture 8.

Adiabatic Approximation. Rotation of Diatomic Molecules
Berry Phase

Lecture 9.

Scattering Problem. Perturbation Theory. Born Approximation.

Lecture 10.

Three-Particles-Scattering. Faddeev Equation

Lecture 11 .

A particle, interacting with a quantized field. Polaron.

Lecture 12.

Quantum Dynamics and its Classical Limit.
Feynmann-Vernon and Keldysh Theories

Lecture 13.

Tunneling a particle, interacted with an environment.
Caldeira-Leggett Theory

Lecture 14.

A particle, interacting with a classical gauge filed.
Infra-red  catastrophe. Phase Breaking Rate.

Lecture 15.

Geometric Quantization. Path Integral for a Spin. Statistics. Statistical transmutation

Lecture 16.

Path Integral for Fermions. Fermionic Oscillator. Supersymmetry

Lecture  17.

Broadening of the lowest Landau Level

Lecture 18.

Light adsorbtion. Urbach rule

Lecture 19.

Electron in One-dimensional Random Potential. Anderson Localization.

Lecture 20 .

Weak Disorder and Non-linear sigma-model. Weak Localisation. Dysonian Statistics.

Lecture  21.

Extra-electron in a Superconductor. Shapoval-de Gennes method

Lecture 22.

Strings

Epiloge.

Further Development
 

 Appendix 1

One-dimensional Classical Statistical Mechanics and
Quantum Mechanics of a Particle. Correlation functions.

Appendix 2

Random Walk with Random Traps

Appendix 3

Sinai Diffusion

Appendix 4
 

LECTURE  NOTES

PROBLEMS