Electric and thermal conductivity 13  Consider 2+1D relativistic system at finite chemical potential and zero momentum, close to equilibrium  Introd
{"Image DocumentName": "Electric and thermal conductivity", "Image ImageDescription": "Consider 2+1D relativistic system at finite chemical potential and zero momentum, close to equilibrium. Introduce global U(1) field in field theory (neglect photons) Corresponds to Maxwell field in bulk. Electric and thermal current sourced by electric field and thermal gradient (NB: linear response around equilibrium) Note: heat is transported by charge -> gradient causes current. Relate operator (J and Q) to field deformation (A and g) S. Hartnoll, Lectures on holographic methods for condensed matter physics (2009)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}