A First Course in String Theory

14.1 Counting bosonic states

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Let , the number of ways to put indistinguishable balls into boxes.

p.318 “For open bosonic strings , …”

When , , the cases are:

1. four ‘s:

2. one and two ‘s:

3. two ‘s:

4. one and one :

5. one :

Total number of possible states for is 25650.

— Me@2015-08-13 12:05:57 PM

2015.08.13 Thursday (c) All rights reserved by ACHK