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摘要
En 中文
I survey the recent construction of a family of new twistor string theories which are free from world-sheet anomalies and give the space-time spectra of Einstein supergravities, with second order field equations instead of the higher derivative conformal supergravities that arose from earlier twistor strings. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Keyword:
classical theories of gravity
topological strings
superstrings and heterotic strings
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期刊
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被引数:
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