Details

Autor(en) / Beteiligte

• Diehl, Sebastian
• Tomadin, Andrea
• Micheli, Andrea
• Fazio, Rosario
• Zoller, Peter

Titel

Dynamical phase transitions and instabilities in open atomic many-body systems

Ist Teil von

• Physical review letters, 2010-07, Vol.105 (1), p.015702-015702, Article 015702

Ort / Verlag

United States

Erscheinungsjahr

2010

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We discuss an open driven-dissipative many-body system, in which the competition of unitary Hamiltonian and dissipative Liouvillian dynamics leads to a nonequilibrium phase transition. It shares features of a quantum phase transition in that it is interaction driven, and of a classical phase transition, in that the ordered phase is continuously connected to a thermal state. We characterize the phase diagram and the critical behavior at the phase transition approached as a function of time. We find a novel fluctuation induced dynamical instability, which occurs at long wavelength as a consequence of a subtle dissipative renormalization effect on the speed of sound.