Eigenvalues and eigenvectors of observables

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Homework Help Overview

The discussion revolves around calculating the eigenvalues and eigenvectors of a Hamiltonian operator represented in terms of bra-ket notation. The subject area includes quantum mechanics and linear algebra concepts related to operators and their properties.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants express uncertainty about converting bra-ket notation into matrix form and how to represent the states as matrices. Questions arise regarding the orthonormality of the states involved and the calculation of matrix elements.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the representation of states and the relationship between the Hamiltonian and its eigenstates. Some guidance has been offered regarding the basis states, but no consensus has been reached on the specific methods to proceed.

Contextual Notes

Participants are navigating the conversion of abstract quantum states into a more concrete matrix representation, which may involve assumptions about the properties of the states and the Hamiltonian operator.

Fixxxer125
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Homework Statement



Calculate the Eigenvalues and eigenvectors of
H= 1/2 h Ω ( ]0><1[ + ]1><0[ )

Homework Equations



I know H]λ> = λ]λ>


The Attempt at a Solution


I don't know if I am meant to concert my bra's and ket's into matrices, and if so how to represent these as matrices?
 
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Fixxxer125 said:

Homework Statement



Calculate the Eigenvalues and eigenvectors of
$$\hat{H} = \frac{1}{2}\hbar\Omega (|0\rangle\langle 1| + |1\rangle\langle 0| )$$

Homework Equations



I know ##\hat{H}|λ\rangle = λ|λ\rangle##.


The Attempt at a Solution


I don't know if I am meant to concert my bra's and ket's into matrices, and if so how to represent these as matrices?
Are the states ##| 0 \rangle ## and ##| 1 \rangle## orthonormal? If so, just calculate the matrix elements ##\langle i |\hat{H}|j \rangle##.
 
Thanks! In the solution given the Eigenstates are given in terms of the |0⟩ and |1⟩ states in the Hamiltonian. How do I know what these states are in terms of matrices so I can write the eigenstates in terms of these? Cheers
 
Those two states are the basis you're using, so...
 

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