D-Brane Probes in the Matrix Model

Understand

Recently, a new approach to large N gauge theories, based on a generalization of the concept of D-brane probes to any gauge field theory, was proposed.

• In the present note, we compute the probe action in the one matrix model with a quartic potential.
• This allows to illustrate several non-trivial aspects of the construction in an exactly solvable set-up.
• One of our main goal is to test the bare bubble approximation.