Stability of D brane Anti D brane Systems in Confining Gauge Theories

Understand

We study the stability of a special form of D brane embedding which is regarded as a bound state of D$_n$ and anti-D$_n$-brane embedded in a 10D supergravity background which is dual to a confining gauge theory.

• For D5 branes with $U(1)$ flux, their bound state configuration can be regarded as the baryonium vertex.
• For D branes of $n=6$ and 8 without the $U(1)$ flux, their bound states have been used to introduce flavor quarks in the dual supersymmetric Yang-Mills theory.
• In any case, it would be important to assure that they are free from tachyon instability.