Remarks on Non-BPS D-Branes
classification
✦ hep-th
keywords
d-branesd8-branenon-bpsaccountsappropriatebeenbrieflycertain
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Following Sen's discovery of various stable non-BPS D-branes, K-theory has been shown to be the appropriate mathematical framework for classifying conserved D-brane charges. The classification accounts for known D-branes and predicts some new ones including a D8-brane in type I superstring theory. After briefly reviewing these developments, we discuss certain issues pertaining to the D8-brane, which is unstable.
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