Chapter 3. External Sources, Correlations & Perturbation Theory

  •    3.1. External Sources       ( Aug 15, 2016 )
  •    3.2. Green Function of Harmonic Oscillator       ( Jul 20, 2016 )
  •          Mathematica code for §3.2
  •    3.3. Green Functions of First Order Differential Equation       ( Jul 31, 2016 )
  •          Mathematica code for §3.3
  •    3.4. Summing Spectral Representation of Green Function       ( Aug 14, 2016 )
  •    3.5. Wronski Construction for Periodic & Antiperiodic Green Functions       ( Aug 14, 2016 )
  •    3.6. Time Evolution Amplitude in Presence of Source Term       ( Aug 02, 2016 )
  •          Mathematica code for §3.6
  •    3.7. Time Evolution Amplitude at Fixed Path Average       ( Aug 03, 2016 )
  •          Mathematica code for §3.7
  •    3.8. External Source in Quantum Statistical PathIntegral       ( Sep 02, 2016 )
  •          Mathematica code for §3.8
  •    3.9. Lattice Green Function       ( Aug 10, 2016 )
  •    3.10. Correlation Functions Generating Functional & Wick Expansion       ( Aug 15, 2016 )
  •    3.11. Correlation Functions of Charged Particle in Magnetic Field & Harmonic Potential       ( Aug 16, 2016 )
  •    3.12. Correlation Functions in Canonical Path Integral       ( Sep 07, 2016 )
  •          Mathematica code for §3.12
  •    3.13. Particle in Heat Bath       ( Sep 03, 2016 )
  •    3.14. Heat Bath of Photons       ( Sep 02, 2016 )
  •    3.15. Harmonic Oscillator in Ohmic Heat Bath       ( Sep 05, 2016 )
  •          Mathematica code for §3.15
  •    3.16. Harmonic Oscillator in Photon Heat Bath       ( Sep 06, 2016 )
  •    3.17. Perturbation Expansion of Anharmonic Systems       ( Sep 07, 2016 )
  •    3.18. Rayleigh-Schrodinger & Brillouin-Wigner Perturbation Expansion       ( Sep 13, 2016 )
  •          Mathematica code for §3.12
  •          Mathematica code for §3.18
  •    3.19. Level Shifts & Perturbed Wave Functions from Schrodinger Equation       ( Sep 14, 2016 )
  •    3.20. Calculation of Perturbation Series via Feynman Diagrams       ( Sep 20, 2016 )
  •          Mathematica code for §3.20
  •    3.21. Perturbative Definition of Interacting Path Integrals       ( Sep 22, 2016 )
  •    Chap.3.zip       ( Sep 22, 2016 )

    Appendix 3

  •    A3B. Energy Shifts for g x4 Interaction       ( Sep 12, 2016 )
  •          Mathematica code for Appendix 3B
  •    A3D. Feynman Integrals for finite T       ( Sep 21, 2016 )
  •          Mathematica code for Appendix 3D


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