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T: Fachverband Teilchenphysik

T 22: Quantenfeldtheorie

T 22.5: Vortrag

Mittwoch, 29. Februar 2012, 17:45–18:00, VG 3.101

On stability and transport of cold holographic matter — •Shu Lin¹, Johanna Erdmenger¹, Jonathan Shock¹, Steffen Müller¹, Andy O’Bannon², and Martin Ammon³ — ¹Max-Planck-Institut für Physik, Munich, Germany — ²University of Cambridge, Cambridge, UK — ³University of California, Los Angeles, USA

In the framework of gauge/gravity duality, we have studied the stability of N=4 supersymmetric Yang-Mills theory with N=2 hypermultiplet at zero temperature and finite density. The system is analogous to the ground state of large N_c QCD at finite baryon density. While experience from large N_c suggests the formation of chiral density wave, our systematic study of the meson spectrum shows no sign of instability. Furthermore, we find a peculiar diffusion mode in the dispersion, which exists at zero temperature.