Talks & Seminars
Talks

  • Enabling Large Scale LAPW DFT Calculations by a Scalable Iterative Eigensolver [PDF]
    First Principle Methods and Applications for Computational Materials Science and Chemistry, SIAM Conference on Computational Science & Engineering, Salt lake City, Utah, USA. March 2015.
     
  • An optimized subspace iteration eigensolver applied to sequences of dense eigenproblems in ab initio simulations [PDF]
    8th International Workshop on Parallel Matrix Algorithms and Applications (PMAA14), Lugano, Switzerland July 2014.
     
  • A knowledge-based approach to high-performance computing in ab initio simulations [PDF]
    AICES Advisory Board Meeting, Aachen, Germany, July 2014.
     
  • An Optimized and Scalable Iterative Eigensolver for Sequences of Dense Eigenvalue Problems [PDF]
    13th Copper Mountain Conference on Iterative Methods, Copper Mountain, Colorado, USA, April 2014.
     
  • A Parallel and scalable iterative solver for sequences of dense eigenproblems arising in FLAPW. [PDF]
    10th International Conference on Parallel Processing and Applied Mathematics (PPAM 2013), Warsaw, Poland, September 2013.
     
  • Preconditioning Chebyshev subspace iteration applied to sequences of dense eigenproblems in ab initio simulations. [PDF]
    Numerical Analysis and Scientific Computation with Applications (NASCA13), Calais, France, June 2013.
     
  • Improving the performance of applied science numerical simulations: an application to Density Functional Theory. [PDF]
    Columbia University, New York, New York, USA, March 2013.
     
  • Parallel block Chebyshev subspace iteration algorithm optimized for sequences of correlated dense eigenproblems. [PDF]
    5th International Conference of the ERCIM Working group (ERCIM 2012), Oviedo, Spain, December 2012.
     
  • Block Iterative Eigensolvers for Sequences of Correlated Dense Eigenvalue Problems. [PDF]
    Parallel Matrix Algorithms and Applications (PMAA 2012). June 2012, Birbek University, London, UK.
     
  • Eigenproblems and Eigensolvers in Density Functional Theory. [PDF]
    Argonne Leadership Computing Facility, Argonne, Illinois, USA, April 2012.
     
  • Block Iterative Solvers and Sequences of Eigenproblems arising in Electronic Structure Calculations. [PDF]
    12th Copper Mountain Conference on Iterative Methods, Copper Mountain, Colorado, USA, Mar. 2012.
     
  • Estimating the number of eigenvalues in a interval using the eigenproblem resolvent.
    25th Umbrella Symposium, Aachen, Germany, June 2011.
     
  • Sequences of generalized eigenproblems in DFT [PDF]
    IMACS 10, Marrakech, Morocco, May 2011.
     
  • High-performance and matrix structure patterns exploitation in generalized eigenproblems arising in iterative cycle.
    ICNAAM '10, Island of Rhodes, Greece, Sep. 2010.
     
  • Improving performance of Density Functional Theory self-consistent cycle [PDF]
    Physics Department, RWTH, Aachen, Germany, July 2010.
     
  • The Hitchhiker Guide to the Theoretical Galaxy: from String Theory to Computational Physics
    Aachen Institute for Advanced Study in Computational Engineering Science, RWTH, Aachen, Germany, Nov. 2010.
     
  • Multiparametric Quantum Algebras and the Cosmological Constant
    Perimeter Institute for Theoretical Physics, Waterloo, Ontario, October 2005.
     
  • Who is afraid of another duality? Chiral rings and random Matrix models
    Physics Department, The University of Texas at Austin, June 2005.
     
  • Application of Dijkgraaf-Vafa theory to N=1 Supersymmetric theories
    Mathematics Department, The University of Texas at Austin, March 2004
     
  • MSSN and dynamical electroweak symmetry breaking
    Physics Department, 2nd University of Rome "Tor Vergata", February 1998.

Seminars

  • An Optimized and Scalable Iterative Solver for Sequences of ab initio Eigenvalue Problems.
    JSC, Forschungszentrum Juelich, May 2014
     
  • An Optimized and Scalable Iterative Solver for Sequences of Dense Eigenvalue Problems.
    University of Minnesota, Minneapolis, April 2014
     
  • Eigenproblems and Eigensolvers in ab initio Methods: an example of "reverse simulation".
    JSC, Forschungszentrum Juelich, June 2012
     
  • Eigenproblems and Eigensolvers in DFT [PDF]
    JSC, Forschungszentrum Juelich. Feb. 2012
     
  • An Introduction to Photovoltaics
    B&T main office, Rome, 2008
     
  • Series on Electroweak hierarchy in M-theory and String inspired inflation
    Physics Department, The University of North Carolina at Chapel Hill, 2007.
     
  • Can Quantum deSitter space have finite entropy?
    Physics Department, The University of North Carolina at Chapel Hill, 2006
     
  • Supersymmetry and its role in addressing the problem of the true vacuum.
    Physics Department, The University of Texas at Austin, 2004.
     
  • A topological aspect of dimensional deconstruction
    Physics Department, The University of Texas at Austin, 2002.
     

Courses

Winter and Summer Schools

  • Numerical methods for the eigenvalue problem in electronic structure computations. [PDF]
    Computing Solids: Models, ab initio methods and supercomputing, Forschungszentrum Juelich, March 2014
     

Workshops

  • Quantum Theory of Materials: an Introduction to Density Functional Theory and its Computational Challenges [PDF]
    EU Regional School, Aachen, Germany, Nov. 2011
     

Teaching Assistant

  • Supersymmetry
    Physics Department, The University of Texas at Austin
     
  • Quantum Field Theory II
    Physics Department, The University of Texas at Austin
     
  • Introduction to Particle Physics
    Physics Department, The University of Texas at Austin
     
  • Quantum Field Theory I
    Physics Department, The University of Texas at Austin
     

Instructor/Lecturer

  • Laboratory of Mechanics and Thermodynamics
    Physics Department, The University of Texas at Austin
     
  • Laboratory of Electromagnetism and Optics
    Physics Department, The University of Texas at Austin
     
  • Microelectronics and Telecommunication Systems
    NATO Navy Communication Center "La Maddalena"