Российский Квантовый Центр Russian Quantum Center

Georg Rohringer / Georg Rohringer


E-mail: grohringer AT gmail.com

Positions / Должности

  • Postdoc at Russian Quantum Center. Сотрудник группы Российского Квантового Центра.
  • PhD in Physics Кандидат физико-математических наук

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    Research interests / Научные интересы

    • Physics of strongly correlated electron systems: Spectral properties and response functions of strongly correlated electron systems, nonlocal correlations, Mott metal-to-insulator transitions.
    • Method development in Quantum Field Theory of condensed matter: Diagrammatic extensions of DMFT (DΓA, 1PI, DMF2RG), algorithms for calculations of generalized two-particle correlation functions and vertex corrections.
    • Magnetic Phase Transitions: Phase diagrams and critical properties of strongly correlated electron systems at finite and zero temperature (classical and quantum criticality).
    • Nonequilibrium physics in many-electron systems: Relaxation behavior of strongly correlated lattice and impurity models after quantum quenches, coincidence spectroscopy.

    Other activities / Научная деятельность

    • Reviewer for Physical Review Letters and Physical Review B

    Awards / Награды

    • December 2003 “Leistungstipendium” of the Vienna University of Technology
    • September 2010 “Fo ̈rderstipendium” of the Vienna University of Technology

    Publications / Публикации

    Impact of nonlocal correlations over different energy scales: A Dynamical Vertex Approximation study
    G. Rohringer and A. Toschi
    Phys. Rev. B, 94, 125144 (2016)
    arXiv: arXiv:1604.08748

    Parquet decomposition calculations of the electronic self-energy
    O. Gunnarsson, T. Schfer, J. P. F. LeBlanc, J. Merino, G. Sangiovanni, G. Rohringer, and A. Toschi
    Phys. Rev. B, 93, 245102 (2016), editorial suggestion
    arXiv:1604.01614

    Nonlocal correlations and spectral properties of the Falicov-Kimball model
    T. Ribic, G. Rohringer, and K. Held
    Phys. Rev. B, 93, 195105 (2016)
    arXiv:1602.07161

    Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
    O. Gunnarsson, T. Sch ̈afer, J. P. F. LeBlanc, E. Gull, J. Meriono, G. Sangiovanni, G. Rohringer, and A. Toschi
    Phys. Rev. Lett., 114, 236402 (2015)
    arXiv:1411.6947

    Dynamical vertex approximation in its parquet implementation: application to Hubbard nano-rings
    A. Valli, T. Sch ̈afer, P. Tunstr ̈om, G. Rohringer, S. Andergassen, G. Sangiovanni, K. Held, and A. Toschi
    Phys. Rev. B, 91, 115115 (2015)
    arXiv:1410.4733

    Fate of the false Mott-Hubbard transition in two dimensions
    T. Scha ̈fer, F. Geles, D. Rost, G. Rohringer, E. Arrigoni, K. Held, N. Blu ̈mer, M. Aichhorn, and A. Toschi
    Phys. Rev. B, 91, 125109 (2015)
    arXiv:1405.7250

    From infinite to two dimensions through the functional renormalization group
    C. Taranto, S. Andergassen, J. Bauer, K. Held, A. Katanin, W. Metzner, G. Rohringer, and A. Toschi
    Phys Rev. Lett., 112, 196402 (2014)
    arXiv:1307.3475

    One- particle irreducible functional approach: A route to diagrammatic extensions of dy- namical mean-field theory
    G. Rohringer, A. Toschi, H. Hafermann, K. Held, V. Anisimov, and A. Katanin
    Phys. Rev. B, 88, 115112 (2013)
    arXiv:1301.7546

    Divergent Precursors of the Mott-Hubbard Transition at the Two-Particle Level
    T. Scha ̈fer, G. Rohringer, O. Gunnarsson, S. Ciuchi, G. Sangiovanni, and A. Toschi
    Phys. Rev. Lett., 110, 246405 (2013)
    arXiv:1303.0246

    Local Electronic Correlation at the Two-Particle level
    G. Rohringer, A. Valli, and A.Toschi
    Phys. Rev. B. 86, 125114 (2012)
    arXiv:1202.2796

    Critical Properties of the Half- Filled Hubbard Model in Three Dimensions
    G. Rohringer, A. Toschi, A.A. Katanin, and K. Held
    Phys. Rev. Lett. 107, 256402 (2011)
    arXiv:1104.1919

    Ab initio calculations with the dynamical vertex approximation
    A. Toschi, G. Rohringer, A. Katanin, and K. Held
    Annalen der Physik, 523, 698 (2011)
    arXiv:1104.2188

    Hedin Equations, GW, GW+DMFT, and All That
    K. Held, C. Taranto, G. Rohringer, and A. Toschi
    Lecture Notes of the Autumn School 2011 Hands-on LDA+DMFT, Forschungszentrum Ju ̈lich GmbH (publisher) (2011)
    arXiv:1109.3972

    Optical spectral weight in cuprates: A DMFT study
    G. Rohringer, A. Toschi, G. Sangiovanni, and K. Held
    Junior Scientist Conference 2010, 217

    High-Temperature Optical Spec- tral Weight and Fermi-liquid Renormalization of Bi-Based Cuprate Superconductors
    D. Nicoletti, O. Limaj, P. Calvani, G. Rohringer, A. Toschi, G. Sangiovanni, M. Capone, K. Held, S. Ono, Yoichi Ando, and S. Lupi
    Phys. Rev. Lett. 105, 077002 (2010)
    arXiv:1003.3345



Lecture Courses | Курсы лекций