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- Thread starter Einstein's Cat
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a) If you multiply a vector by a complex scalar, it means you multiply each component in the vector by the scalar.

b) No, |A> + |A> = 2|A>.

- #3

Doc Al

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As far as the ket itself goes, multiplying it by some complex number has noIn Dirac's "The Principles of Quantum Mechanics," ket vectors are multipled by complex numbers (c1 |A> + c2 |A> = c1 + c2 |A>) and I was curious what affect this has a) on the ket vector and b) on the entire system?

When you are composing a state out of several different kets, then those coefficients

I think you missed a factor of 2 there.Also is (c1 |A> + c2 |A> = c1 + c2 |A>) equal to (|A> + |A> = |A>)?

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Thank you very much for your time; it's very helpful.

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