Write the inner product of the state vector in a atom orbital

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SUMMARY

The discussion focuses on the inner product of state vectors in atomic orbitals, specifically examining two atomic orbitals with wave functions σ(r) and μ(r) in diatomic molecules. These orbitals are orthogonal and normalized, with creation operators x, y, and vacuum |0>. The participants explore how to express σ(r) and μ(r) using bra vectors and derive energy eigenvalues using the Linear Combination of Atomic Orbitals (LCAO) approach, where V = <0|xHy|0> represents a real matrix element related to the energies ε^a and ε^b of the respective orbitals.

PREREQUISITES
  • Understanding of quantum mechanics and atomic orbitals
  • Familiarity with wave functions and bra-ket notation
  • Knowledge of creation operators in quantum field theory
  • Concept of Linear Combination of Atomic Orbitals (LCAO)
NEXT STEPS
  • Study the derivation of energy eigenvalues in the Linear Combination of Atomic Orbitals (LCAO) method
  • Learn about the properties of orthogonal and normalized wave functions
  • Explore the application of creation operators in quantum mechanics
  • Investigate the significance of matrix elements in quantum mechanics
USEFUL FOR

Students of quantum mechanics, physicists working with atomic structures, and anyone interested in the mathematical formulation of molecular orbitals.

rishhary
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Consider 2 atomic orbitals with wave function a: σ(r), b: μ(r) in a diatomic molecules. σ(r) (or μ(r)) is localized around an atom a (or b) and is relevant for the discussion of the molecular orbital. These orbitals are orthogonal and normalised. The creation operators are x, y and vacuum, |0>.

a ) A wave function for the orbital on each atom is represented by the creation operator. Using the bra vector <r| write σ(r), μ(r) in the inner product of the state vectors. b) Let ε^a (or ε^b) be the energy of a: σ(r), b: μ(r) respectively and V = <0|xHy|0> be a real matrix element. Obtain the energy eigen values in this Linear combination of atomic orbitals approach.

These questions are from a sample exam papers of my course and I tried solving them but I am not sure of my answer so I decided to post it here so I can get some feedback and cross-check my solution. Thank you
 
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rishhary said:
These questions are from a sample exam papers of my course and I tried solving them but I am not sure of my answer so I decided to post it here so I can get some feedback and cross-check my solution. Thank you
Please post your solution here (and use the homework template), otherwise you cannot get feedback on it.
 

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