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Quantum criticality

Noise gets marginal

Thermal noise destroys the fragile correlations that characterize many-body systems at a quantum critical point. Theoretical work now shows that another generic form of noise acts differently: flicker noise may alter some properties of a quantum phase transition, but it can preserve the quantum critical state.

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Figure 1: Impact of thermal (equilibrium) and flicker 1/f (non-equilibrium) noise on a quantum critical point at the critical interaction strength gc.


  1. Sachdev, S. Quantum Phase Transitions (Cambridge Univ. Press, 1999).

    MATH  Google Scholar 

  2. Dalla Torre, E. G., Demler, E., Giamarchi, T. & Altman, E. Nature Phys. 10.1038/nphys1754 (2010).

  3. Winkler, K. et al. Phys. Rev. Lett. 98, 043201 (2007).

    ADS  Article  Google Scholar 

  4. Ni, K-K. et al. Science 322, 231–235 (2008).

    ADS  Article  Google Scholar 

  5. Blatt, R. & Wineland, D. J. Nature 453, 1008–1015 (2008).

    ADS  Article  Google Scholar 

  6. Diehl, S. et al. Nature Phys. 4, 878–883 (2008).

    ADS  Article  Google Scholar 

  7. Verstraete, F., Wolf, M. M. & Cirac, J. I. Nature Phys. 5, 633–636 (2009).

    ADS  Article  Google Scholar 

  8. Weimer, H., Müller, M., Lesanovsky, I., Zoller, P. & Büchler, H. P. Nature Phys. 6, 382–388 (2010).

    ADS  Article  Google Scholar 

  9. Krauter, H. et al. Preprint at (2010).

  10. Barreiro, J. T. et al. Preprint at (2010).

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Diehl, S. Noise gets marginal. Nature Phys 6, 721–722 (2010).

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