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2 Nov 2009: Degeneracy 2 2 6 2 6 2 10 6 2 10 Cumulative 2 4 10 12 18 20 30 36 38 48. ... Cumulative 2 4 10 12 18 20 30 36 38 48.

8 Oct 2009: Synopsis: Lectures 20-24. 15 Scattering theory. Elastic and inelastic scattering; method of particle waves; Bornapproximation; scattering of identical particles.

18 Nov 2009: 20 (mass m and asymptotic speed v0), incident upon a. target with a central potential V (r). ... k cot δ0 = 1a0. 12r0k. 2 ,. where a0 = (1 tan γγ )R, with γ = U1/20 R, defines the scattering length, and r0 is.

8 Oct 2009: 20-21 Scattering theory I: Basics; elastic and inelastic scattering; methodof particle waves; Born approximation; scattering of identical particles.

8 Oct 2009: 3.1. OPERATORS 20. 3.1 Operators. An operator  is a “mathematical object” that maps one state vector, |ψ〉,into another, |φ〉, i.e.

9 Nov 2009: Degeneracy 2 2 6 2 6 2 10 6 2 10 Cumulative 2 4 10 12 18 20 30 36 38 48.

8 Oct 2009: a 20% admixture of the first excited state. Then the wavefunction isoff by ca. ... 20%, but the energy estimate will be too high by only 0.04(E1E0),usually a much smaller error!

8 Oct 2009: E = ma2V 20. 2!2. Indeed, the solution is unique. An attractive δ-function potential hosts onlyone bound state. '

27 Nov 2009: non-examinable in this course. Synopsis: Lectures 20-24. 15 Scattering theory†Elastic and inelastic scattering; †method of particle waves; †Bornseries expansion; Born approximation from Fermi’s Golden rule;†scattering of

22 Nov 2009: σz =(. 0 11 0. ), σ+ =. (0 20 0. ),