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SUMMARY:A thermal quench induces spatial inhomogeneities in a holographic 
 superconductor - Zhang\, HQ (Chinese Academy of Sciences)
DTSTART:20130917T150000Z
DTEND:20130917T153000Z
UID:TALK47158@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Co-authors: Antonio M. Garcia-Garcia (Cambridge)\,  Hua Bi Zen
 g.\n\nHolographic duality is a powerful tool to investigate the far-from e
 quilibrium dynamics of superfluids and other phases of quantum matter. For
  technical reasons it is usually assumed that\, after a quench\, the far-f
 rom equilibrium fields are still spatially uniform.\nHere we relax this as
 sumption and study the time evolution of a holographic superconductor afte
 r a temperature quench but allowing spatial variations of the order parame
 ter amplitude. Even though the initial state and the quench are spatially 
 uniform we show the order parameter develops spatial oscillations with an 
 amplitude that increases with time until it reaches a stationary value for
  long times. The free energy of these inhomogeneous solutions is lower tha
 n that of the homogeneous ones. Therefore the former corresponds to the ph
 ysical configuration that could be observed experimentally. \n\n
LOCATION:Seminar Room 1\, Newton Institute
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