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- Sebastian MÃ¼ller, Stefan Heusler, Petr A. Braun, F. Haake, Alexander Altland
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2005

We argue semiclassically, on the basis of Gutzwiller's periodic-orbit theory, that full classical chaos is paralleled by quantum energy spectra with universal spectral statistics, in agreement withâ€¦ (More)

- Lukas Landau, Stephan Plugge, Eran Sela, Alexander Altland, Silvia Albrecht, Reinhold Egger
- Physical review letters
- 2016

Surface codes have emerged as promising candidates for quantum information processing. Building on the previous idea to realize the physical qubits of such systems in terms of Majorana bound statesâ€¦ (More)

- Alexander Altland
- Physical review letters
- 2006

At low values of external doping, graphene displays a wealth of unconventional transport properties. Perhaps most strikingly, it supports a robust "metallic" regime, with universal conductance of theâ€¦ (More)

- Alexander Altland, Andrej Fischer, Joachim Krug, Ivan G. Szendro
- Physical review letters
- 2011

We study the evolution of a population in a two-locus genotype space, in which the negative effects of two single mutations are overcompensated in a high-fitness double mutant. We discuss how theâ€¦ (More)

- Sven Gnutzmann, Alexander Altland
- Physical review letters
- 2004

We prove that the spectrum of an individual chaotic quantum graph shows universal spectral correlations, as predicted by random-matrix theory. The stability of these correlations with regard toâ€¦ (More)

- Alexander Altland, Victor Gurarie
- Physical review letters
- 2008

We formulate and approximately solve a specific many body generalization of the Landau-Zener problem. Unlike with the single particle Landau-Zener problem, our system does not abide in the adiabaticâ€¦ (More)

- Sven Gnutzmann, Alexander Altland
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2005

We investigate the spectral properties of chaotic quantum graphs. We demonstrate that the energy-average over the spectrum of individual graphs can be traded for the functional average over aâ€¦ (More)

- Alexander Altland, F. Haake
- Physical review letters
- 2012

We demonstrate effective equilibration for unitary quantum dynamics under conditions of classical chaos. Focusing on the paradigmatic example of the Dicke model, we show how a constructiveâ€¦ (More)

- Dmitry A Bagrets, Alexander Altland
- Physical review letters
- 2012

Proximity coupled spin-orbit quantum wires purportedly support midgap Majorana states at critical points. We show that, in the presence of disorder, these systems generate a second band centerâ€¦ (More)

- Alexander Altland, Reinhold Egger
- Physical review letters
- 2013

We study multiple helical nanowires in proximity to a common mesoscopic superconducting island, where Majorana fermion bound states are formed. We show that a weak finite charging energy of theâ€¦ (More)