NONLINEAR DYNAMICS: QUANTUM CHAOS  
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	Georgia Tech PHYS 7224			Spring semester 2002  
	Predrag Cvitanovic'

	Lecture 21         Tue, Feb 21 2002 12:05-13:25 in Howey S106

Semiclassical scattering theory wrapped up
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We will write out the Gutzwiller-Voros determinant for 
2 Hamiltonian degrees of freedom, and start setting up the
first test of the theory, quantum resonances in multi-disk
scattering.

Reading:
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	Classical and Quantum Chaos	
        ---    www.nbi.dk/ChaosBook/postscript.html

	do not print yet (but browse) current drafts of 
chapter 23 - WKB quantization
  http://cns.physics.gatech.edu/ChaosBook/coauthors/chapters/WKB-2p.ps.gz
chapter 26 - Semicalssical chaotic scattering
  http://cns.physics.gatech.edu/ChaosBook/coauthors/chapters/scattering-2p.ps.gz

Problem set:
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Write an essay about quantum scattering in your own words,
based on your favourite QM textbooks and articles, explaing

S-matrix
quantum resonances as measured in real E (energy)
quantum resonances presented in complex E plane (optional)
Wigner time delay (optional)

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due Tue Feb 26 2002, in the class, or Predrag's mailbox or hand it to Y. Lan.