Fermions in Bosonic String Theories

Details Fermions in Bosonic String Theories Fermions in Bosonic String Theories

2001-07-19

arxiv.org/abs/hep-th/0107165v2

JHEP 0109:001,2001

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, 2 figs, harvmac ; v2, minor modifications, references added

Scientific paper

10.1088/1126-6708/2001/09/001

We generalize the Jackiw-Rebbi-Hasenfratz-'t Hooft construction of fermions from bosons to demonstrate the fermionic nature of certain bound states involving SU(N) instantons in even spatial dimensions and SO(N) instantons in $8k+1$ spatial dimensions. We use this result to identify several fermionic excitations in various perturbatively bosonic string theories. In some examples we are able to identify these fermions as excitations in known conformal field theories and independently confirm their fermionic nature. Examples of the fermions we find include certain 3-string junctions in type 0B theory, excitations of the 0-p system in type 0A theory, excitations of the stable D-particle of type O theory, and a rich spectrum of fermions in the bosonic string compactified on the SO(32) group lattice.

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