On the Stability of D7 - anti-D7 Probes in Near-conformal Backgrounds

Understand

We investigate the perturbative stability of a nonsupersymmetric D7 - anti-D7 brane embedding in a particular class of type IIB backgrounds.

• These backgrounds are the gravitational duals of certain strongly-coupled gauge theories, that exhibit a nearly conformal regime (known as a walking regime).
• Previous studies in the literature have led to conflicting results as to whether the spectrum of fluctuations around the flavor D7 - anti-D7 embedding has a tachyonic mode or not.
• Here we reconsider the problem with a new analytical method and recover the previously obtained numerical results.