Nikodem Szpak -- Homepage

Dr. Nikodem Szpak

nikodem_szpak

ResearchGate

University Duisburg-Essen
Faculty of Physics
Duisburg, Germany

Currently: Postdoc at the University Duisburg-Essen, Faculty of Physics, Theoretical Physics, Group of Prof. J. König and SFB 1242, project B07

Research and scientific interests:

Conferences


Seminars:
Current teaching:
Newest papers:
  • Relaxation to persistent currents in a Hubbard trimer coupled to fermionic baths
    with Gernor Schaller, Ralf Schützhold and Jürgen König
    arXiv:2311.06331 [cond-mat.str-el]
     
  • Electronic transport in bent carbon nanotubes
    with Eric Kleinherbers and Thomas Stegmann
    Phys. Rev. B 107, 195424 (2023), arXiv:2302.01395 [cond-mat.mes-hall]

  • Quasi-particle propagation across semiconductor-Mott insulator interfaces
    with Jan Verlage, Friedemann Queisser, Jürgen König, Peter Kratzer, and Ralf Schützhold
    arXiv:2303.13507 [cond-mat.str-el]
Bachelor/Master:
  • Analogue relativistic fermions in optical lattices

Postdoc at the MPI for Gravitational Physics (Albert Einstein Institute), Golm/Potsdam (06-09)

PhD: Institut für Theoretische Physik, Physics Department, J. W. Goethe Universität Frankfurt (00-05)

M.Sc. in Theoretical Physics: Theory Department, Institute of Physics, Jagellonian University Cracow (95-99)

- Member (and Ex-Chairman) of The Scientific Association of Physics Students (Jagell. Univ.)
- Seminars

Graduate in Computer Sciences: WSIiZ - Academy of Computer Science and Management (93-96)

V Mathematical High School in Bielsko-Biala (91-95)

CV


[Email]

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Fakultät für Physik

Address
Lotharstr. 1
47057 Duisburg
Room
MC 325

Functions

  • Wissenschaftliche/r Mitarbeiter/in, Theoretische Physik

  • Mitglied, SFB 1242

The following publications are listed in the online university bibliography of the University of Duisburg-Essen. Further information may also be found on the person's personal web pages.

    Journal articles

  • Kleinherbers, Eric; Stegmann, Thomas; Szpak, Nikodem
    Electronic transport in bent carbon nanotubes
    In: Physical Review B Vol. 107 (2023) Nr. 19, 195424
  • Schaller, Gernot; Queisser, Friedemann; Szpak, Nikodem; König, Jürgen; Schützhold, Ralf
    Environment-induced decay dynamics of antiferromagnetic order in Mott-Hubbard systems
    In: Physical Review B Vol. 105 (2022) Nr. 11, 115139
  • Ortiz, Walter; Szpak, Nikodem; Stegmann, Thomas
    Graphene nanoelectromechanical systems as valleytronic devices
    In: Physical Review B Vol. 106 (2022) Nr. 3, 035416
  • Paredes-Rocha, Emmanuel; Betancur-Ocampo, Yonatan; Szpak, Nikodem; Stegmann, Thomas
    Gradient-index electron optics in graphene p-n junctions
    In: Physical Review B Vol. 103 (2021) Nr. 4, 045404
  • Kleinherbers, Eric; Szpak, Nikodem; König, Jürgen; Schützhold, Ralf
    Relaxation dynamics in a Hubbard dimer coupled to fermionic baths : Phenomenological description and its microscopic foundation
    In: Physical Review B Vol. 101 (2020) Nr. 12, 125131
  • Stegmann, Thomas; Szpak, Nikodem
    Current splitting and valley polarization in elastically deformed graphene
    In: 2D Materials Vol. 6 (2019) Nr. 1, pp. 015024
  • Stegmann, Thomas; Szpak, Nikodem
    Current flow paths in deformed graphene : from quantum transport to classical trajectories in curved space
    In: New Journal of Physics (NJP) Vol. 18 (2016) Nr. 5, pp. 053016
  • Linder, Malte; Schützhold, Ralf; Szpak, Nikodem; Sicking, Joachim; Schneider, Christian
    Pulse shape dependence in the dynamically assisted Sauter-Schwinger effect
    In: Physical review D Vol. 92 (2015) Nr. 8, pp. 085009
  • Szpak, Nikodem; Schützhold, Ralf
    Optical lattice quantum simulator for quantum electrodynamics in strong external fields : spontaneous pair creation and the Sauter-Schwinger effect
    In: New Journal of Physics (NJP) Vol. 14 (2012) pp. 035001
  • Bizon, Piotr; Chmaj, Tadeusz; Szpak, Nikodem
    Dynamics near the threshold for blowup in the one-dimensional focusing nonlinear Klein-Gordon equation
    In: Journal of mathematical physics Vol. 52 (2011) Nr. 10, pp. 103703
  • Szpak, Nikodem; Schützhold, Ralf
    Quantum simulator for the Schwinger effect with atoms in bichromatic optical lattices
    In: New Journal of Physics (NJP) Vol. 84 (2011) Nr. 5, 050101(R)
  • Szpak, Nikodem
    Asymptotics from Scaling for Nonlinear Wave Equations
    In: Communications in partial differential equations Vol. 35 (2010) Nr. 10, pp. 1876 - 1890
  • Bieli, Roger; Szpak, Nikodem
    Global Pointwise Decay Estimates for Defocusing Radial Nonlinear Wave Equations
    In: Communications in partial differential equations Vol. 36 (2010) Nr. 2, pp. 205 - 215
  • Szpak, Nikodem
    Late-time attractor for the cubic nonlinear wave equation
    In: Journal of mathematical physics Vol. 51 (2010) Nr. 8, pp. 082901
  • Szpak, Nikodem
    Comment on 'Late-time tails of a self-gravitating massless scalar field revisited'
    In: Classical and quantum gravity Vol. 26 (2009) Nr. 24, pp. 248001
  • Szpak, Nikodem
    Linear and nonlinear tails II : exact decay rates in spherical symmetry
    In: Journal of Hyperbolic Differential Equations (JHDE) Vol. 6 (2009) Nr. 1, pp. 107 - 125
  • Szpak, Nikodem
    Linear and nonlinear tails I : general results and perturbation theory
    In: Journal of Hyperbolic Differential Equations (JHDE) Vol. 5 (2008) Nr. 4, pp. 741 - 765
  • Szpak, Nikodem
    Spontaneous particle creation in time-dependent overcritical fields
    In: Journal of Physics A: Mathematical and Theoretical Vol. 41 (2008) Nr. 16, pp. 164059
  • Szpak, Nikodem
    Spontaneous particle creation within the external field approximation of QED
    In: Proceedings in Applied Mathematics and Mechanics: PAMM / Sixth International Congress on Industrial Applied Mathematics (ICIAM07) and GAMM Annual Meeting, 16-20 Juli 2007, Zürich Vol. 7 (2007) Nr. 1, Special Issue: Sixth International Congress on Industrial Applied Mathematics (ICIAM07) and GAMM Annual Meeting, pp. 1141401 - 1141402
  • Marecki, Piotr; Szpak, Nikodem
    Spontaneous emission of light from atoms : the model
    In: Annalen der Physik Vol. 14 (2005) Nr. 7, pp. 428 - 437
  • Szpak, Nikodem
    On the problem of “spontaneous pair creation” in strong electric fields
    In: Nuclear instruments & methods in physics research Vol. 2005 (2003) pp. 30 - 35
  • Szpak, Nikodem
    Relaxation to Intermediate Attractors in Nonlinear Wave Equations
    In: Relaxation to Intermediate Attractors in Nonlinear Wave Equations Vol. 127 (2001) Nr. 3, pp. 817 - 826
  • Articles

  • Szpak, Nikodem; Schaller, Gernot; Schützhold, Ralf; König, Jürgen
    Relaxation to persistent currents in a Hubbard trimer coupled to fermionic baths
    (2023)
  • Klar, Leonhard; Szpak, Nikodem; Schützhold, Ralf
    Quantum simulation of spontaneous pair creation in 2D optical lattices
    (2019)
  • Szpak, Nikodem; Schützhold, Ralf
    Time reversal and quantum Loschmidt echo in optical lattices
    (2019)
  • Szpak, Nikodem
    Curved spacetimes in the lab
    (2014)
  • Bieli, Roger; Szpak, Nikodem
    Large data pointwise decay for defocusing semilinear wave equations
    (2010)
  • Szpak, Nikodem
    Simple proof of a useful pointwise estimate for the wave equation
    (2007)
  • Szpak, Nikodem
    Weighted-L∞ and pointwise space-time decay estimates for wave equations with potentials and initial data of low regularity
    (2007)
  • Szpak, Nikodem
    Quasinormal mode expansion and the exact solution of the Cauchy problem for wave equations
    (2004)
  • Book articles / Proceedings papers

  • Szpak, Nikodem
    A Sheet of Graphene : Quantum Field in a Discrete Curved Space
    In: Relativity and gravitation: 100 years after Einstein in Prague / Bicak, Jiri; Ledvinka, Tomas (Eds.) 2014, pp. 583 - 590
  • Posters / Proceedings posters

  • Szpak, Nikodem; Stegmann, Thomas;
    Current flow paths in deformed graphene: from quantum transport to classical trajectories in curved space
    Graphene Week 2016, Warsaw, Poland, 13/06/2016 - 17/06/2016,
    (2016)
  • Szpak, Nikodem;
    Transport Phenomena in Deformed Graphene: Magnetic Field vs Curvature
    Graphene Week 2015, Manchester, UK, 22 – 26 June 2015,
    (2015)
  • Szpak, Nikodem;
    Quantum Transport in Deformed Graphene via Dirac Equation in Curved Space
    Graphene International Conference 2014, Toulouse, France, 6th - 9th of May 2014,
    (2014)
  • Szpak, Nikodem;
    Quantum Transport in Deformed Graphene vs Dirac Equation in Curved Space
    Graphene Week 2014, Gothenburg, Sweeden, 23-27 June,
    (2014)
  • Szpak, Nikodem;
    Quantum simulation of relativistic fields interacting with artificial gravity in 2D optical lattices
    Physikzentrum Bad Honnef, workshop "Discrete and Analogue Quantum Simulators", Feb. 2014,
    (2014)
  • Szpak, Nikodem;
    Quantum simulation of relativistic fields interacting with artificial gravity in 2D optical lattices
    Physikzentrum Bad Honnef, workshop "Quo vadis BEC? V'", Dec. 2014,
    (2014)
  • Szpak, Nikodem;
    A sheet of graphene - quantum fields in a discrete curved space
    Relativity and Gravitation – 100 Years after Einstein in Prague June 25 – 29, 2012, Prague, Czech Republic,
    (2012)
  • Szpak, Nikodem;
    A sheet of graphene – quantum field in a discrete curved space
    raphene International Conference 2012, Brussels, 10-13 April 2012,
    (2012)
  • Szpak, Nikodem;
    Optical lattice based quantum simulators for relativistic field theories
    ICAP 2012: 23rd International Conference on Atomic Physics, 23 Jul 2012 bis 27 Jul 2012,
    (2012)
  • Lectures

  • Szpak, Nikodem; Stegmann, Thomas;
    Current flow paths in deformed graphene: from quantum transport to classical trajectories in curved space
    Graphene Week 2016, Warsaw, Poland, 13/06/2016 - 17/06/2016,
    (2016)
  • Szpak, Nikodem; Kleinherbers, Eric; Dwedari, Magdulin; Korsten, Lennart;
    Electronic transport in deformed nanotubes and in presence of magnetic field
    80. Jahrestagung der DPG und DPG-Frühjahrstagung, Regensburg, 6. - 11. März 2016,
    (2016)
  • Szpak, Nikodem;
    The effects of curvature in deformed optical lattices
    DPG-Frühjahrstagung Hannover, 29. Februar - 4. März 2016,
    (2016)
  • Szpak, Nikodem;
    Quantum simulation of curvature in finite size optical lattices
    Institute of Physics, Atomic Optics Department, Jagellonian University, Cracow, Poland, Oct. 2015,
    (2015)
  • Szpak, Nikodem;
    Quantum simulation of curvature in finite size optical lattices
    DPG-Frühjahrstagung Heidelberg, 23. - 27. März 2015,
    (2015)
  • Szpak, Nikodem; Stegmann, Thomas;
    Transport in deformed graphene: Magnetic field versus curvature
    79. Jahrestagung der DPG und DPG-Frühjahrstagung Berlin, 15. - 20. März 2015,
    (2015)
  • Sicking, Joachim; Schützhold, Ralf; Szpak, Nikodem;
    Pulse shape dependence in the dynamically assisted Sauter-Schwinger effect
    78. Jahrestagung der DPG und DPG-Frühjahrstagung Berlin, 17. - 21. März 2014,
    (2014)
  • Szpak, Nikodem;
    Quantum simulation of relativistic fields interacting with artificial gravity in 2D optical lattices
    Physikzentrum Bad Honnef, workshop "Discrete and Analogue Quantum Simulators", Feb. 2014,
    (2014)
  • Szpak, Nikodem;
    Quantum simulation of relativistic quantum fields interacting with artificial gravity in 2D optical lattices
    78. Jahrestagung der DPG und DPG-Frühjahrstagung Berlin, 17. - 21. März 2014,
    (2014)
  • Szpak, Nikodem;
    Quantum simulation of curved spaces in optical lattices containing topological defects
    DPG-Frühjahrstagung Hannover, 18. - 22. März 2013,
    (2013)
  • Szpak, Nikodem;
    A sheet of graphene - quantum fields in a discrete curved space
    DPG-Frühjahrstagung Göttingen, 27. Februar - 2. März 2012,
    (2012)
  • Szpak, Nikodem;
    Curvature, Defects, Geometry in Graphene and Optical Lattices
    Mini-Symposium on Graphene, Univ. Duisburg-Essen, Dec. 2012,
    (2012)
  • Szpak, Nikodem;
    Optical lattice based quantum simulators for relativistic field theories
    DPG-Frühjahrstagung Stuttgart, 12. - 16. März 2012,
    (2012)
  • Szpak, Nikodem;
    The appearance of mass in discrete analog models: graphene and optical lattices
    Physikzentrum Bad Honnef, workshop "Strong interactions beyond the standard model", Feb. 2012,
    (2012)
  • Szpak, Nikodem;
    Appearance of mass in lattice models
    Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), April 2011,
    (2011)
  • Szpak, Nikodem; Schützhold, Ralf;
    Strong-field-QED analogue on the lattice
    75. Jahrestagung der DPG und DPG Frühjahrstagung Dresden, 13. - 18. März 2011,
    (2011)
  • Szpak, Nikodem;
    Strong-field-QED effects in an optical lattice
    DPG Frühjahrstagung Karlsruhe, 28. März - 1. April 2011,
    (2011)
  • Szpak, Nikodem; Kleinherbers, Eric; Schützhold, Ralf; Stegmann, Thomas;
    Current flow paths in deformed graphene and carbon nanotubes
    Current flow paths in deformed graphene and carbon nanotubes,
    (2007)