Finite temperature closed bosonic string in a finite volume |
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| Affiliation: | 1. Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea;2. R&D Center, Changsung Co. Ltd., Incheon 405-100, Republic of Korea |
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| Abstract: | Paying attention to the modular invariance and using a covariant canonical gauge (the proper time gauge), we calculate the free energy of a noninteracting gas of closed bosonic strings in a 25-dimensional torus of finite size. The result differs in form from the modular non-invariant result of Polchinski, but can be shown to be equal to it. |
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