Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Sieberer, L. M."'
Publikováno v:
Phys. Rev. Lett. 120, 216801 (2018)
The topological phases of periodically-driven, or Floquet systems, rely on a perfectly periodic modulation of system parameters in time. Even the smallest deviation from periodicity leads to decoherence, causing the boundary (end) states to leak into
Externí odkaz:
http://arxiv.org/abs/1711.06188
Publikováno v:
Phys. Rev. X 7, 041006 (2017)
Driven-dissipative systems in two dimensions can differ substantially from their equilibrium counterparts. In particular, a dramatic loss of off-diagonal algebraic order and superfluidity has been predicted to occur due to the interplay between coher
Externí odkaz:
http://arxiv.org/abs/1704.06609
Publikováno v:
Phys. Rev. B 94, 104521 (2016)
A comprehensive theory of the Kosterlitz-Thouless transition in two-dimensional superfluids in thermal equilibrium can be developed within a dual representation which maps vortices in the superfluid to charges in a Coulomb gas. In this framework, the
Externí odkaz:
http://arxiv.org/abs/1604.01043
Publikováno v:
Phys. Rev. B 94, 104520 (2016)
We investigate the superfluid properties of two-dimensional driven Bose liquids, such as polariton condensates, using their long-wavelength description in terms of a compact Kardar-Parisi-Zhang (KPZ) equation for the phase dynamics. We account for to
Externí odkaz:
http://arxiv.org/abs/1604.01042
Publikováno v:
Universal Themes of Bose-Einstein Condensation, N.P. Proukakis, D.W. Snoke and P.B. LIttlewood (Eds.) (Cambridge University Press, 2017)
We review recent results on the coherence and superfluidity of driven dissipative condensates, i.e., systems of weakly-interacting non-conserved Bosons, such as polariton condensates. The presence of driving and dissipation has dramatically different
Externí odkaz:
http://arxiv.org/abs/1601.04495
Publikováno v:
Rep. Prog. Phys. 79, 096001 (2016)
Recent experimental developments in diverse areas - ranging from cold atomic gases over light-driven semiconductors to microcavity arrays - move systems into the focus, which are located on the interface of quantum optics, many-body physics and stati
Externí odkaz:
http://arxiv.org/abs/1512.00637
Publikováno v:
Phys. Rev. B 92 (2015) 134307
The time evolution of an extended quantum system can be theoretically described in terms of the Schwinger-Keldysh functional integral formalism, whose action conveniently encodes the information about the dynamics. We show here that the action of qua
Externí odkaz:
http://arxiv.org/abs/1505.00912
Publikováno v:
Phys. Rev. B 89, 134310 (2014)
We present a comprehensive analysis of critical behavior in the driven-dissipative Bose condensation transition in three spatial dimensions. Starting point is a microscopic description of the system in terms of a many-body quantum master equation, wh
Externí odkaz:
http://arxiv.org/abs/1309.7027
Publikováno v:
Phys. Rev. Lett. 110, 195301 (2013)
We explore the nature of the Bose condensation transition in driven open quantum systems, such as exciton-polariton condensates. Using a functional renormalization group approach formulated in the Keldysh framework, we characterize the dynamical crit
Externí odkaz:
http://arxiv.org/abs/1301.5854
Autor:
Sieberer, L. M., Baranov, M. A.
We examine collective modes, stability, and BCS pairing in a quasi-two-dimensional gas of dipolar fermions aligned by an external field. By using the (conserving) Hartree-Fock approximation, which treats direct and exchange interactions on an equal f
Externí odkaz:
http://arxiv.org/abs/1110.3679