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Unformatted text preview: P460  operators and H.O. 1 Operator methods in Quantum Mechanics Section 61 outlines some formalism dont get lost; much you understand define ket and bra vectors and dot product add in operators to this formalism. Let A be an operator dx x x x x x x ) ( ) (   ) (  ) ( * * = dx A dx A A A dx A A A A A dag dag = = = = = = * * * ) (   P460  operators and H.O. 2 Orthonormal States can usually define a set of orthonormal states n> (eigenfunctions). Can rotate to this basis (diagonalize operater) any other function can be made from these identical to 2D vectors . 1 oper unit n n n n n C n C n m states l orthonorma n n n n n n mn = = = = = = ( ) ( ) ( ) = + = = = + = + = 1 1 1 1 1 1 1 2 1 3 2 1 3 1 2 3 2 3 2 n n i r j i r n r r P460  operators and H.O. 3 Projection operator this defines the projection operator P n which when it acts on an arbitrary state projects it into the state n> so projection along vector n. Again for 2D vectors ) ( 1 1 ) ( matrix P n n as P n n m...
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This note was uploaded on 10/02/2009 for the course PHYS 460 taught by Professor Johnson,c during the Spring '08 term at Northern Illinois University.
 Spring '08
 Johnson,C
 mechanics, Quantum Physics

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