Identity Projector and D-brane in String Field Theory

Details Identity Projector and D-brane in String Field Theory Identity Projector and D-brane in String Field Theory

2001-06-04

arxiv.org/abs/hep-th/0106027v3

Phys.Lett. B514 (2001) 407-412

Physics

High Energy Physics

High Energy Physics - Theory

Latex 11 pages 1 figure (v2) new references and comments, typo correction (v3) another comment, English correction

Scientific paper

10.1016/S0370-2693(01)00841-3

We study the identity projectors of the string field theory in the generic
BCFT background. We explain how it can be identified as the projector in the
linking algebra of the noncommutative geometry. We show that their
(regularized) trace is exactly given by the boundary entropy which is
proportional to the D-brane tension.

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