THE ZERO TENSION LIMIT OF THE VIRASORO ALGEBRA AND THE CENTRAL EXTENSION

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Duration: 3 min 30 s
Description: We argue that the Virasoro algebra for the closed bosonic string can be cast in a form which is suitable for the limit of vanishing string tension. In this form the limit of the Virasoro algebra gives the null string algebra. The anomalous central extension is seen to vanish as well when T→0.
Fedele Lizzi
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