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- W2077406901 startingPage "1917" @default.
- W2077406901 abstract "We investigate the theory of a closed bosonic string propagating in a background consisting of a condensate of its massless modes. At the classical level, the Virasoro operators and the Hamiltonian are identified and their Poisson-brackets algebra verified. The massless-mode vertex operators for a string in background fields are constructed from the requirement that they have the appropriate Poisson brackets with the Virasoro operators. In the quantum theory, a weak-field expansion of the Virasoro operators is used. The commutators of the Virasoro operators are explicitly evaluated to first order in the weak-field expansion using the Bjorken-Johnson-Low procedure. The equations of motion to first order in weak fields are seen to follow from the requirement of the closure of the Virasoro algebra on the two-dimensional world sheet." @default.
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- W2077406901 date "1987-03-15" @default.
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- W2077406901 title "Strings in curved space-time: Virasoro algebra in the classical and quantum theory" @default.
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- W2077406901 doi "https://doi.org/10.1103/physrevd.35.1917" @default.
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