Nikodem Szpak -- Talks

By topic (Articles + Talks) [version 2017, to be updated soon...]

Analog models in curved spaces: Quantum transport in deformed graphene

Talks & Posters

Analog models: QED and GR in optical lattices

  • Quantum simulation of spontaneous pair creation in 2D optical lattices
    with Leonhard Klar and Ralf Schützhold
    arXiv:1901.09880 [quant-ph]
     
  • Time reversal and quantum Loschmidt echo in optical lattices
    with Ralf Schützhold
    arXiv:1901.05941 [quant-ph]
  • Curved spacetimes in the lab
    arXiv:1410.1567 [quant-ph]
     
  • Optical lattice quantum simulator for QED in strong external fields: spontaneous pair creation and the Sauter-Schwinger effect
    with R. Schützhold
    New J. Phys. 14 (2012) 035001, quant-ph/1109.2426

Talks & Posters

"The appearance of mass in discrete analog models: graphene and optical lattices"

Nonlinear Wave Equations:

  • "Large data pointwise decay for defocusing semilinear wave equations" (with R. Bieli) - math.AP/1002.3623, submitted
  • "Simple proof of a useful pointwise estimate for the wave equation" - math-ph/0708.2801, submitted
  • "Weighted-$L^\infty$ and pointwise space-time decay estimates for wave equations with potentials and initial data of low regularity" - math-ph/0708.1185, submitted

Talks

  • Talk at the Erwin Schrödinger International Institute for Mathematical Physics (ESI) in Vienna, Workshop on Quantitative Studies of Nonlinear Wave Phenomena (Follow-up), January 2011
    "Dynamics near the threshold for blowup in nonlinear Klein-Gordon equations" - pdf
  • Talk at the University Duisburg-Essen, Faculty of Mathematics, Essen, November 2010
    "Pointwise decay estimates and asymptotics for semilinear wave equations with small and large data" - pdf
  • Talk at the Erwin Schrödinger International Institute for Mathematical Physics (ESI) in Vienna, Workshop on Quantitative Studies of Nonlinear Wave Phenomena, February 2010
    "Pointwise decay estimates and asymptotics for semilinear wave equations with small and large data" - pdf
  • Contributed talk at the 12th Marcel Grossmann Meeting, Paris, July 2009
    "On the nonlinear asymptotics of travelling gravitational waves in the harmonic gauge" - pdf
  • Talk at the Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), March 2009
    "Pointwise decay estimates and asymptotics for semilinear wave equations with small and large data" - pdf
  • Contributed talk at the 73th DPG Tagung in München, March 2009
    "Are gravitational waves essentially linear?" - pdf
  • Invited talk at the Institute of Theoretical Physics, Friedrich-Schiller-Universität Jena, February 2009
    "Nonlinear asymptotics in time-like and null directions" - pdf
  • Invited talk at the Institute of Theoretical Physics, University Vienna, January 2009
    "Pointwise decay estimates and asymptotics for semilinear wave equations" - pdf
  • Talk at the Mittag-Leffler Institute in Stockholm, Workshop on Geometry, Analysis, and General Relativity, September 2008
  • "Pointwise decay estimates and asymptotics for semilinear wave equations" - pdf

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  • Invited talk at the Mathematics Department at UCSD, La Jolla (San Diego, CA),  April 2008
  • "Pointwise estimates for nonlinear wave equations - late time tails and distortion of traveling waves" - pdf

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  • Contributed talk at the 72th Physikertagung (DPG) in Freiburg, March 2008
  • "Nonlinear effects of Einstein equations in the weak-field regime" - pdf

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  • Talk for the Numerical Relativity Group at the Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), March 2008
  • "Nonlinear asymptotic behaviour of weak waves" - pdf

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  • Invited talk at the Institute of Physics, General Relativity Department, Jagellonian University, Cracow (Poland), October 2007
  • "Stability, decay and perturbation theory for nonlinear wave equations" - pdf
  • Talk at the Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), June 2007
  • "Stability, decay and perturbation theory for nonlinear wave equations" - pdf
  • Contributed talk at the 16th International Conference on General Relativity and Gravitation, Durban (South Africa), 2001:
  • "Relaxation to unstable attractors in nonlinear wave equations" - jpg (scanned)
  • Contributed talk at the International Congress on Mathematical Physics (ICMP, Young Researchers Symposium), London, 2000:
  • "Relaxation to Unstable Attractors in Nonlinear Wave Equations" - review of my Master Thesis, 11 pages - ps
  • Contributed talk at the International Conference on Nonlinear Evolution Equations and Dynamical Systems (NEEDS), Gokova (Turkey), 2000:
  • "Relaxation to unstable attractors in nonlinear wave equations" - review of my Master Thesis, 13 pages - ps,
    published in TMPh (Theoretical and Mathematical Physics), Vol. 127, No. 3, pp. 817-826, 2001 - pdf

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  • Invited talk at the International Conference on "Informatics Systems", Bielsko-Biala (Poland), 1999:
  • "Critical phenomena in nonlinear field equations" - very short review of my Master Thesis, 4 pages  - ps
  • My Master Thesis (Jagellonian University Cracow, Poland, 1999):
  • "Relaxation to Unstable Attractors in Nonlinear Wave Equations" (in polish only) - ps
  • Contributed talk at the International Conference of Physics Students (ICPS), Helsinki, 1999:
  • "Universality of late-time dynamics for nonlinear wave equations"

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Quasinormal modes & spectral decompositon of the gravitational radiation:

  • "Quasinormal mode expansion and the exact solution of the Cauchy problem for wave equations" - gr-qc/0411050

Talks

  • Talk at the Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), September 2009
    "Dynamical vs traditional theory of quasinormal modes"
  • Invited talk at the Institute of Physics, General Relativity Department, Jagellonian University, Cracow (Poland), April 2009
  • "Zjawisko Stokesa zagrozeniem dla teorii modow quasi-normalnych" (The Stokes phenomenon -- an endangerment for the theory of quasinormal modes)
  • Talk at the Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), May 2005
  • "Global representation of solutions to wave equations with a potential (e.g. Einstein eqs. linearized around a stationary metric) by means of quasi-normal and other modes." - pdf
  • Contributed talk at the 69th Physikertagung (DPG) in Berlin, 2005:
  • "Quasinormal mode expansion and the exact solution of the Cauchy problem for wave equations" - pdf
  • 17th International Conference on General Relativity and Gravitation, Dublin (Ireland), 2004
  • "Quasinormal mode expansion for solutions of the wave equations" - poster - pdf
  • Talk at the Albert Einstein Institute (Max-Planck-Institute for Gravitational Physics) in Golm (Germany), July 2004
  • "Quasinormal mode expansion and an exact solution of the Cauchy problem for wave equations" - pdf
  • Talk at the 68th Physikertagung (DPG) in Ulm, 2004:
  • "Quasinormal mode expansion for solutions of the wave equation with a potential" - pdf
  • Invited talk at the Institute of Physics, General Relativity Department, Jagellonian University, Cracow (Poland), October 2003
  • "Rozklad rozwiazan rownan falowych z potencjalem na mody quasi-normalne" (Quasinormal mode expansion for solutions of the wave equation with a potential) - jpg (scanned) (in polish)

Strong Field Phenomena of QED: Spontaneous Pair Creation

  • "'Spontaneous pair creation' in strong electric fields of Highly Charged Ions" - NIMB (Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms), Vol: 205, May, 2003, pp: 30-35

Talks

  • Invited talk at the Institute of Theoretical Physics, Duisburg-Essen University, February 2009
    "Spontaneous particle creation in strong time-dependent external fields of QED" - pdf
  • Invited talk at the Institute of Theoretical Physics, Friedrich-Schiller-Universität Jena, February 2009
    "Spontaneous particle creation in strong time-dependent external fields of QED" - pdf
  • Invited talk at the Department of Mathematics, University Cergy-Pontoise (by Paris), Dec. 2006:
  • "Spontaneous particle creation in time-dependent external fields of QED" - pdf
  • Disputation talk (doctoral thesis defence), Goethe University Frankfurt, March 2006
  • "Spontaneous particle creation in time-dependent overcritical fields of QED" - pdf
  • Invited talk at the Mathematics Institute, University of Tübingen, June 2005
  • "Spontaneous particle creation within the external field approximation of QED" - pdf
  • Contributed talk at the 69th Physikertagung (DPG) in Berlin, 2005:
  • "Spontaneous particle creation within the external field approximation of QED" - pdf
  • Invited talk at the Institute of Physics, Field Theory Department, Jagellonian University, Cracow (Poland), October 2004
  • "Zjawisko spontanicznej kreacji czastek w silnych zewnetrznych polach w QED"
  • Contributed talk at QMath9 (conference on mathematical problems in quantum physics), Giens (France), September 2004
  • "Spontaneous particle creation within the external field approximation of QED" - pdf
  • Contributed talk at the 68th Physikertagung (DPG) in Ulm, 2004:
  • "Spontaneous particle creation within the external field approximation of QED" - pdf
  • Invited talk at the Institute for Theoretical Physics, Justus-Liebig-University Giessen, February 2004
  • "On the problem of 'spontaneous pair creation' in strong electric fields' - pdf
  • XIV International Congress on Mathematical Physics, ICMP 2003, Lisbon:
  • "On the problem of 'spontaneous pair creation' in strong electric fields" - poster - pdf,  draft paper - ps
  • Contributed talk at the 67th Physikertagung (DPG) in Hannover, 2003:
  • "On the problem of 'spontaneous pair creation' in strong electric fields" - pdf
  • 11th International Conference on the Physics of Highly Charged Ions, Caen (France), 2002:
  • "'Spontaneous pair creation' in strong electric fields of Highly Charged Ions"- poster - pdf,
    published in NIMB (Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms), Vol: 205, May, 2003, pp: 30-35
  • International Conference on Theoretical Physics TH-2002 in Paris, 2002:
  • "On the problem of 'spontaneous pair creation' in strong electric fields" - poster -  ps

Theoretical atomic physics:

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