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Unformatted text preview: J at the beginning of Chapter 2 useful, but you should also keep in mind that equation 2.2 for instance assumes Minkowski space, which is not what we have here; 2. the problem tells you that n is the number density of standard candles today, and that the candles are neither created nor destroyed as you go backward (or forward) in time you should think carefully what this means for the proper number density versus comoving number density (one stays constant but the other changes with time)....
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This note was uploaded on 02/23/2010 for the course PHYS 3002 taught by Professor Lam during the Spring '10 term at Columbia.
 Spring '10
 Lam
 Physics

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