Week of 1/21/08

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{{Mathematica|filename=Griffiths_example2.2.nb|title=Mathematica version of Griffiths analytic example 2.2}}
 
{{Mathematica|filename=Griffiths_example2.2.nb|title=Mathematica version of Griffiths analytic example 2.2}}
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{{{{PDF|filename=1-25-08.pdf|title=Lecture notes 1/25/08.  Review of stationary states.  Fourier superposition.  Completeness and orthogonality of eigencuntions of Hermitian operators.}

Revision as of 17:23, 25 January 2008

Definition of complex (Hermitian) inner product


It's a matter of convention that the anti-linear term is the second one in the inner product:

 \langle u+v,w \rangle \equiv \langle u,w \rangle + \langle v,w \rangle

 \langle u,v+w \rangle  \equiv \langle u,v \rangle + \langle u,w \rangle

 \langle \alpha u,v \rangle  \equiv \alpha \langle u,v \rangle

 \langle u,\alpha v \rangle \equiv \alpha^* \langle u,v \rangle

 \langle u,v \rangle  \equiv \langle v,u \rangle ^*

 \langle u,u \rangle  = 0, with equality only if u \equiv 0

The basic example is the form

h(z,w) \equiv \sum z_i w^* _i

However, Griffiths uses a different convention with the complex conjugate on the first term: cf page 94. So, I will change mine to conform to his.



NB if z = x + Iy, then z * z = (xIy)(x + Iy) = x2 + y2 = zz *


Mathematica.png Download Animation of the superposition of two eigenstates for a 1D string


Pdf.png Download Lecture notes 1/21/08. Sep. of Variables of TDSE. Eigenstates. Stationary states.


Pdf.png Download Lecture notes 1/23/08. Review of Hermitian matrices/operators. Particle in an infinite square well.


Mathematica.png Download evolution of a gaussian particle in a box


Mathematica.png Download Mathematica version of Griffiths analytic example 2.2

{{{{PDF|filename=1-25-08.pdf|title=Lecture notes 1/25/08. Review of stationary states. Fourier superposition. Completeness and orthogonality of eigencuntions of Hermitian operators.}

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