How Do You Find \left\langle\psi|a_1\right\rangle in Matrix Representation?

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SUMMARY

The discussion focuses on finding the matrix representation of the inner product \left\langle\psi|a_1\right\rangle. The user questions whether \left\langle\psi|a_1\right\rangle is equal to the complex conjugate of \left\langle a_1|\psi\right\rangle, confirming the relationship as \left\langle\psi|a_1\right\rangle=(\left\langle a_1|\psi\right\rangle)^*. The context involves operators represented in a given basis, specifically using the notation A_{i,j}=\left\langle a^{(j)}|A|a^{(i)}\right\rangle. The user expresses urgency due to an upcoming midterm and seeks clarification on this specific aspect of quantum mechanics.

PREREQUISITES
  • Understanding of quantum mechanics, specifically bra-ket notation
  • Familiarity with complex conjugates in linear algebra
  • Knowledge of operator representation in quantum mechanics
  • Basic grasp of matrix representations in quantum mechanics
NEXT STEPS
  • Study the properties of inner products in quantum mechanics
  • Learn about the implications of complex conjugation in bra-ket notation
  • Explore operator representation and matrix elements in quantum mechanics
  • Review examples of calculating inner products in different bases
USEFUL FOR

Students of quantum mechanics, particularly those preparing for exams, and anyone seeking to deepen their understanding of inner products and operator representations in quantum systems.

richyw
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Homework Statement



This is quite a long problem, and I have most of it figured out, but I am getting stuck on the very last part of the problem. My problem is I do not understand how to find [itex]\left\langle\psi|a_1\right\rangle[/itex] in the very last line. Is [itex]\left\langle\psi|a_1\right\rangle=(\left\langle a_1|\psi\right\rangle)^*[/itex]

Homework Equations



In a given basis [itex]\left\langle a^{(i)}\right|[/itex], operators are represented by [itex]A_{i,j}=\left\langle a^{(j)}|A|a^{(i)}\right\rangle[/itex]

The Attempt at a Solution



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Last edited:
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oh dang. this doesn't recognize braket package! just one sec
 
ok. so sorry for posting so much stuff. but this is the only part of the question I cannot figure out and I do not have a chance to talk to anyone before the mid term. so if someone would take the time to look at it I would be very greatful.
 

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