Tunneling D0-branes

Understand

In the D0-D4-brane system, D0-branes do not tunnel.

• Instead, they form bound states with the D4-brane, whose ground states are exact.
• However, the D0-brane quantum mechanics contains a BPS instanton.
• To what does this solution correspond? We find that such a tunneling solution provides non-perturbative corrections to the Berry phase connection for the first-excited states as the D4-branes are moved adiabatically.