Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-12-25
Physics
High Energy Physics
High Energy Physics - Theory
PhD Thesis. 190 pages, multiple figures
Scientific paper
Using the gauge-gravity duality we study strongly coupled dynamics of fundamental flavours in large N_c gauge theories in a constant external field. We primarily focus on the effects of an external magnetic field. We use two holographic models realized in the Type IIB and Type IIA supergravity and present a comparative case study. In both these models, by studying the dynamics of probe branes, we explicitly demonstrate and discuss the magnetically induced chiral symmetry breaking effect ("magnetic catalysis") in the flavour sector. We also study the associated thermodynamics and the meson spectrum and realize e.g. Zeeman splitting, stability enhancement of the mesons in the presence of an external magnetic field etc. By studying the quasinormal modes of the probe brane fluctuation in the hydrodynamic limit we also obtain an analytic dispersion relation in the presence of a magnetic field in the Type IIA model. This dispersion relation consists of a propagating sound mode in the otherwise diffusive channel and is sourced by the quantum anomaly of the global U(1) current. We briefly discuss the effects of an external electric field and observe that the flavour bound states dissociate for sufficiently high electric fields and an electric current is induced.
No associations
LandOfFree
External Fields and the Dynamics of Fundamental Flavours in Holographic Duals of Large N Gauge Theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with External Fields and the Dynamics of Fundamental Flavours in Holographic Duals of Large N Gauge Theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and External Fields and the Dynamics of Fundamental Flavours in Holographic Duals of Large N Gauge Theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-93857