How come you can express the up and down spins

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Thread starter dudy
Start date Aug 16, 2010

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dudy

Thread starter
Aug 16, 2010

I don't understand the following regarding spin:
1. How come you can express the up and down spins in any given direction, using the |+>,|-> in the z direction?
2. Why do I need two vectors (|->,|+>) to express a quantity that can only be either (1) or (-1) ?

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AJ Bentley

Aug 16, 2010

Ah, you need Leonard Susskind's Lectures on YouTube.

http://www.youtube.com/watch?v=2h1E3YJMKfA"

Last edited by a moderator: Apr 25, 2017

How come you can express the up and down spins

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How come you can express the up and down spins

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