 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 knowledgebased approach to highperformance 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.
 Highperformance 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 selfconsistent 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 DijkgraafVafa 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.

 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 Mtheory 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.
