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  Quantum Electrodynamical Bloch Theory with Homogeneous Magnetic Fields

Rokaj, V., Penz, M., Sentef, M. A., Ruggenthaler, M., & Rubio, A. (2019). Quantum Electrodynamical Bloch Theory with Homogeneous Magnetic Fields. Physical Review Letters, 123(4): 047202. doi:10.1103/PhysRevLett.123.047202.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-15D8-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-6D5E-A
Genre: Journal Article

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 Creators:
Rokaj, V.1, Author              
Penz, M.1, Author              
Sentef, M. A.2, Author              
Ruggenthaler, M.1, Author              
Rubio, A.1, 3, Author              
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
3Center for Computational Quantum Physics (CCQ), Flatiron Institute, ou_persistent22              

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 Abstract: We propose a solution to the problem of Bloch electrons in a homogeneous magnetic field by including the quantum fluctuations of the photon field. A generalized quantum electrodynamical (QED) Bloch theory from first principles is presented. In the limit of vanishing quantum fluctuations we recover the standard results of solid-state physics, the fractal spectrum of the Hofstadter butterfly. As a further application we show how the well known Landau physics is modified by the photon field and that Landau polaritons emerge. This shows that our QED-Bloch theory does not only allow to capture the physics of solid-state systems in homogeneous magnetic fields, but also novel features that appear at the interface of condensed matter physics and quantum optics.

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Language(s): eng - English
 Dates: 2018-12-062018-08-062019-07-232019-07-26
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: arXiv: 1808.02389
DOI: 10.1103/PhysRevLett.123.047202
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Project name : We would like to thank M. Altarelli, J. Faist, H. Huebener, A. Imamoglu, J. Kaye, and A. Millis for insightful discussions. M. P. acknowledges support by the Erwin Schrödinger Fellowship No. J 4107-N27 of the FWF (Austrian Science Fund). M. A. S. acknowledges financial support by the DFG through the Emmy Noether programme (No. SE 2558/2-1). A. R. acknowledges financial support by the European Research Council (No. ERC-2015-AdG-694097). The Flatiron Institute is a division of the Simons Foundation.
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: 6 Volume / Issue: 123 (4) Sequence Number: 047202 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1