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Monstrous branes

Ben Craps, Matthias R. Gaberdiel, Jeffrey A. Harvey

hep-tharXiv:hep-th/0202074

Abstract

We study D-branes in the bosonic closed string theory whose automorphism group is the Bimonster group (the wreath product of the Monster simple group with Z2). We give a complete classification of D-branes preserving the chiral subalgebra of Monster invariants and show that they transform in a representation of the Bimonster. Our results apply more generally to self-dual conformal field theories which admit the action of a compact Lie group on both the left- and right-moving sectors.

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