Feynman diagram Outline Motivation Feynman
Description: Feynman diagram Outline Motivation Feynman integral Pertubation Thoery in Quantum Mechanics Pertubation Thoery in Quantum Field Theory Green Function Feynman Diagram Experimental Connection Motivation Compared with experiments Amplitude of
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slide1. Feynman diagram<br>
slide2. Outline Motivation
Feynman integral
Pertubation Thoery in Quantum Mechanics
Pertubation Thoery in Quantum Field Theory
Green Function
Feynman Diagram
Experimental Connection<br>
slide3. Motivation Compared with experiments
Amplitude of final states from collision of two initial particles
Cross section of collision
Graphical representation and simplicity<br>
slide4. Pertubation Thoery in Quantum Mechanics Idea of Pertubation theory
H = H_0 + H_I
Acquire information from H_0
Getting new eigenvector<br>
slide5. Pertubation Thoery in Quantum Mechanics Dyson series
How wave function evolute by time when H = H_0 + H_I<br>
slide6. Pertubation Thoery in Quantum Field Theory Idea of Quantum Field Theory
Number of particle
Take particle and wave as the same
Solution (Feynman path integral approach)<br>
slide7. Pertubation Thoery in Quantum Field Theory <final| exp( int_ (dt H_I)) |initial><br>
slide8. Green function Ideal of Green function
Two point Green function
Four point Green function as combination of two point green function<br>
slide9. Green function Ideal of Green function
Four point Green function as combination of two point green function<br>
slide10. Feynman Diagram Green function + time evolution of field
Graphical representation<br>
slide11. Feynman Diagram Feynman rule: example of lampta Phy^4 theory<br>
slide12. Feynman Diagram Re-intepretation of anti-particle
Anti-particle in Dirac equation
Anti-charge and positive energe<br>
slide13. Experimental Connection Cross section
What’s cross section?
Connection of cross section and experiment<br>
slide14. Experimental Connection Calculating cross section
Amplitude
Cross section<br>
slide2. Outline Motivation
Feynman integral
Pertubation Thoery in Quantum Mechanics
Pertubation Thoery in Quantum Field Theory
Green Function
Feynman Diagram
Experimental Connection<br>
slide3. Motivation Compared with experiments
Amplitude of final states from collision of two initial particles
Cross section of collision
Graphical representation and simplicity<br>
slide4. Pertubation Thoery in Quantum Mechanics Idea of Pertubation theory
H = H_0 + H_I
Acquire information from H_0
Getting new eigenvector<br>
slide5. Pertubation Thoery in Quantum Mechanics Dyson series
How wave function evolute by time when H = H_0 + H_I<br>
slide6. Pertubation Thoery in Quantum Field Theory Idea of Quantum Field Theory
Number of particle
Take particle and wave as the same
Solution (Feynman path integral approach)<br>
slide7. Pertubation Thoery in Quantum Field Theory <final| exp( int_ (dt H_I)) |initial><br>
slide8. Green function Ideal of Green function
Two point Green function
Four point Green function as combination of two point green function<br>
slide9. Green function Ideal of Green function
Four point Green function as combination of two point green function<br>
slide10. Feynman Diagram Green function + time evolution of field
Graphical representation<br>
slide11. Feynman Diagram Feynman rule: example of lampta Phy^4 theory<br>
slide12. Feynman Diagram Re-intepretation of anti-particle
Anti-particle in Dirac equation
Anti-charge and positive energe<br>
slide13. Experimental Connection Cross section
What’s cross section?
Connection of cross section and experiment<br>
slide14. Experimental Connection Calculating cross section
Amplitude
Cross section<br>