Keldysh field theory for driven open quantum systems

Recent experimental developments in diverse areas-ranging from cold atomic gases to light-driven semiconductors to microcavity arrays-move systems into the focus which are located on the interface of quantum optics, many-body physics and statistical mechanics. They share in common that coherent and driven-dissipative quantum dynamics occur on an equal footing, creating genuine non-equilibrium scenarios without immediate counterpart in equilibrium condensed matter physics. This concerns both their non-thermal stationary states and their many-body time evolution. It is a challenge to theory to identify novel instances of universal emergent macroscopic phenomena, which are tied unambiguously and in an observable…

• DF
  Deutsche Forschungsgemeinschaft

  Awards: ZUK 64, ZUK 81
• AS
  Austrian Science Fund

  Award: START grant Y 581-N16
• ER
  European Research Council
• DO
  Division of Physics

  Award: NSF PHY11-25915