Magnetic Catalysis in Holographic QCD
Summary
In this thesis we study, by using the AdS/CFT correspondence, the
formation of a chiral condensate and the subsequent dependence on an
external magnetic field in large Nc QCD-like theories at finite tempera-
ture. This was done via two gravity duals, the AdS-soliton model and the
Improved Holographic QCD model to which a
avour sector was added by
introducing probe branes. In the case of the AdS-Soliton, a 6 dimensional
model with one spatial dimension compactified on a circle, a constructive
effect on the condensate was observed, a phenomenon coined "Magnetic
Catalysis". The second model proved to be substantially more difficult,
failing to give the desired chiral symmetry breaking solutions due to nu-
merical errors. Therefore an extensive discussion and outlook will be given
in order for future work to be able to overcome this problems.