Keldysh field theory for nonequilibrium condensation in a parametrically pumped polariton system
arXiv:1601.01787 · doi:10.1103/PhysRevB.93.195306
Abstract
We develop a quantum field theory for parametrically pumped polaritons using Keldysh Green's function techniques. By considering the mean-field and Gaussian fluctuations, we find that the low energy physics of the highly non-equilibrium phase transition to the optical parametric oscillator regime is in many ways similar to equilibrium condensation. In particular, we show that this phase transition can be associated with an effective chemical potential, at which the system's bosonic distribution function diverges, and an effective temperature. As in equilibrium systems, the transition is achieved by tuning this effective chemical potential to the energy of the lowest normal mode. Since the occupations of the modes are available, we determine experimentally observable properties, such as the luminescence and absorption spectra.
16 pages, 14 figures
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- Kibble-Zurek mechanism in driven-dissipative systems crossing a non-equilibrium phase transition
- Tuning across Universalities with a Driven Open Condensate
- Emergent Finite Frequency Criticality of Driven-Dissipative Correlated Lattice Bosons
- Coherently driven microcavity-polaritons and the question of superfluidity
- Spinor polariton condensates under nonresonant pumping: Steady states and elementary excitations
- Dark-bright solitons in spinor polariton condensates under nonresonant pumping
- Keldysh field theory of dynamical exciton condensation transitions in nonequilibrium electron-hole bilayers
- Cavity Higgs-Polaritons
- Properties of the signal mode in the polariton OPO regime
- Unconventional Berezinskii-Kosterlitz-Thouless Transition in the Multicomponent Polariton System
- Mean field study of 2D quasiparticle condensate formation in presence of strong decay
- Adiabatic perturbation theory of nonequilibrium light-controlled superconductivity
- Driven-Dissipative Bose-Einstein Condensation and the Upper Critical Dimension
- Polaritonic linear dynamic in Keldysh formalism
- Condensation in hybrid superconducting cavity-microscopic spins systems with finite-bandwidth drive