Spherical D-brane by Tachyon Condensation

Understand

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.