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Nuclear Physics Seminars
Thursday, March 1, 2007
Physics Building, Room 204
Note special date.
Note special time.
[Host: Hank Thacker]
University of Michigan
"Holography with backreacted flavor"
The gauge/string holographic duality has opened a new window into the
non-perturbative regime of gauge theories.
I will present the construction of supergravity duals to N=2 supersymmetric gauge theories coupled with matter (quarks) in the fundamental representation of the gauge group. The supergravity solutions are obtained by taking the decoupling limit of D3/D7 (color/flavor) brane systems.
The backreaction of the flavor branes needs to be accounted for, as it allows to go beyond the quenched approximation on the dual gauge theory side. I will give the spectrum of mesons (bound states of quark-anti quark pairs) and discuss the effect of the backreacted flavor.
Lastly, I will present the supergravity dual to the finite temperature
gauge theory. This corresponds to a backreacted non-extremal D3/D7 system.
At finite temperature, the fundamental matter undergoes a first order
phase transition. I will discuss this phase transition from the perspective of the supergravity dual.
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