Spherical D-brane by tachyon condensation

Tsuguhiko Asakawa; So Matsuura

doi:10.1093/ptep/pty006

Spherical D-brane by tachyon condensation

Tsuguhiko Asakawa
, So Matsuura

Faculty of Business and Commerce

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We find a novel tachyon condensation which provides a D-brane system with spherical worldvolume in the flat spacetime. The tachyon profile is a deformation of a known D0-brane solution on non-BPS D3-branes in type IIA superstring theory, which realizes a bound state of a spherical D2-brane and a D0-brane. The D0-brane is resolved into the sphere as a U(1) monopole flux of the unit magnetic charge. We show that the system has the correct tension and the RR-coupling. Although the low-energy effective action of the system is the same as that of the dual description of the fuzzy sphere solution of multiple D0-branes, our system cannot be equivalent to the fuzzy sphere. The use of projective modules in describing the tachyon condensation is emphasized.

Original language	English
Article number	006
Journal	Progress of Theoretical and Experimental Physics
Volume	2018
Issue number	3
DOIs	https://doi.org/10.1093/ptep/pty006
Publication status	Published - 2018 Mar 1

ASJC Scopus subject areas

General Physics and Astronomy

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10.1093/ptep/pty006

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AB - We find a novel tachyon condensation which provides a D-brane system with spherical worldvolume in the flat spacetime. The tachyon profile is a deformation of a known D0-brane solution on non-BPS D3-branes in type IIA superstring theory, which realizes a bound state of a spherical D2-brane and a D0-brane. The D0-brane is resolved into the sphere as a U(1) monopole flux of the unit magnetic charge. We show that the system has the correct tension and the RR-coupling. Although the low-energy effective action of the system is the same as that of the dual description of the fuzzy sphere solution of multiple D0-branes, our system cannot be equivalent to the fuzzy sphere. The use of projective modules in describing the tachyon condensation is emphasized.

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Spherical D-brane by tachyon condensation

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