Homepage Clemens Neuenhahn

From Institute for Theoretical Physics II / University of Erlangen-Nuremberg

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My recent work has focused on thermalization and non-equilibrium properties of isolated many-body quantum systems, e.g., spinless 1D fermions or the quantum sine-Gordon model.

In recent years, the groundbreaking experimental achievements in systems of cold atoms, inspired the theoretical (re-)investigation of the foundations of statistical physics. In particular, the possibility of experimentally studying equilibration in quantum many-body systems, largely isolated from their surrounding environment, directed the attention again to some of the most fundamental but still only partly resolved puzzles of physics. For instance, given an isolated many-body system with a very large number of components: Does, in general, this system indeed thermalize as a result of an arbitrarily small perturbation (e.g. a residual inter-particle interaction) approaching the thermodynamic limit?

In addition, I am also interested in decoherence and dephasing in open quantum systems.


  • Quantum simulation of expanding space-time with tunnel-coupled condensates

Clemens Neuenhahn and Florian Marquardt, arXiv: 1208.2255v1 (2012) Journal

  • Localized phase structures growing out of quantum fluctuations in a quench of tunnel-coupled atomic condensates

Clemens Neuenhahn, Anatoli Polkovnikov and Florian Marquardt, Phys. Rev. Lett. 109, 085304 (2012) Journal

  • Thermalization of Interacting Fermions and Delocalization in Fock space

Clemens Neuenhahn and Florian Marquardt, Phys. Rev. E (R) 85, 060101 (2012) Journal

  • Electron-Plasmon scattering in chiral 1D systems with nonlinear dispersion

Markus Heyl, Stefan Kehrein, Florian Marquardt and Clemens Neuenhahn, Phys. Rev. B 82, 033409 (2010) Journal PDF Cite

  • Recent progress in open quantum systems: Non-Gaussian noise and decoherence in fermionic systems

C. Neuenhahn, B. Kubala, B. Abel, and F. Marquardt, physica status solidi (b) 246, 1018 (2009)Journal PDFCite

  • Universal Dephasing in a Chiral 1D Interacting Fermion System

Clemens Neuenhahn and Florian Marquardt, Phys. Rev. Lett. 102, 046806 (2009) Journal PDF Cite

  • Dephasing by electron-electron interactions in a ballistic Mach-Zehnder interferometer

C. Neuenhahn and F. Marquardt, New Journal of Physics 10, 115018 (2008) Journal PDF Cite

  • Self-Induced Oscillations in an Optomechanical System driven by Bolometric Backaction

Constanze Metzger, Max Ludwig, Clemens Neuenhahn, Alexander Ortlieb, Ivan Favero, Khaled Karrai, and Florian Marquardt, Phys. Rev. Lett. 101, 133903 (2008) Journal PDF Cite


Email: clemens.neuenhahn (at) physik.uni-erlangen.de