## Invited Talks at International Conferences

- The force awakens in quantum Monte Carlo

10th Congress of the International Society for Theoretical Chemical Physics

July 11-17 2019, Tromso, Norway - Playing with geometry and variational optimization in quantum Monte Carlo

Stochastic methods in electronic structure theory

June 10-14 2019, Telluride, USA - Efficient structural and variational optimization in quantum Monte Carlo

16th International Conference of Quantum Chemistry

June 18-23 2018, Menton, France - Simple formalism for efficient derivatives and multi-determinant wave functions in QMC

Stochastic methods in electronic structure theory

July 17-21 2017, Telluride, USA - Extending the applicability of quantum Monte Carlo to large molecules

FemEx 2017

June 22-25 2017, Putten, The Netherlands - Extending the applicability of quantum Monte Carlo to large molecules

253st American Chemical Society Meeting

April 2-7 2017, San Francisco, USA - Excited states with quantum Monte Carlo: Dissecting polarization in biomolecules

Theory and Applications of Computational Chemistry 2016

Aug 28-Sept 2 2016, Seattle, USA - Multiscale modeling for excited states: Capturing polarization in biomolecules

International Society of Theoretical Chemical Physics IX Conference

July 17-22, 2016, Grand Forks, USA - Quantum Monte Carlo for excited states in complex environments

251st American Chemical Society Meeting

13-17 March, 2016, San Diego, USA - Studying excited states in biomolecules with quantum Monte Carlo: A polarizing issue

56th Sanibel meeting

February 14-19, 2016, St. Simons Island, USA - Excited-state modeling in complex environments: A polarizing issue

Workshop on " Excited States: Electronic Structure and Dynamics"

July 13-17, 2015, Telluride, USA - Excited states of biomolecules with quantum Monte Carlo: Don't believe everything you hear

Workshop on "Stochastic Electronic Structure"

June 8-11, 2015, Telluride, USA - Quantum Monte Carlo for excited states in complex environments

Workshop on "Advances in Electronic Structure Theory"

April 27-29, 2015, Paris, France - Computing excited states in complex environments ... You can't always get what you want

Pittsburgh Quantum Institute 2015: Quantum Coherence

April 15-17, 2015, Pittsburgh, USA - All work and no play ... Computing excited states in complex environments

International Conference on Theoretical and High Performance Computational Chemistry 2014

September 14-18, 2014, Beijing, China - Embedded wavefunctions for excited states: Which wavefunctions? Which embedding?

Low-scaling and Unconventional Electronic Structure Techniques Conference

June 1-5, 2014, Telluride, USA - Differential polarization effects with wave function/DFT embedding for excited states

Workshop on Density-based embedding for multiscale simulations

March 24-27, 2014, CECAM, Lausanne, Switzerland - Quantum Monte Carlo for excited state calculations

Winter School in Theoretical Chemistry: Theoretical Spectroscopy

December 16-19, 2013, Helsinki, Finland - Predictive calculations of excited states ... The good, the bad, and the ugly

New Frontiers in Electron Correlation

June 15-20, 2013, Telluride, USA - Size-extensive wave functions for quantum Monte Carlo: A linear scaling generalized valence bond approach

25th Workshop on Recent Developments in Electronic Structure Theory

June 5-8, 2012, Wake Forest University, USA - Excitations of (bio)organic molecules from quantum Monte Carlo

Workshop on Excited States and Non-Adiabatic Processes in Complex Systems

July 25-27, 2011, Girona, Spain - Excitation energies of photoactive biomolecules from quantum Monte Carlo

The International Chemical Congress of Pacific Basin Societies

December 15-20, 2010, Honolulu, Hawaii, USA - Excitations in photosensitive biomolecules from Quantum Monte Carlo

Quantum Monte Carlo Meets Quantum Chemistry: New approaches for Electron Correlation

June 15-18, 2010, Lugano, Switzerland - Quantum Monte Carlo for excited state calculations

DOE Workshop on Theories of Excited States in Molecules and Nanostructures

June 13-14, 2010, Baltimore, USA - Quantum Monte Carlo for excited state calculations

13th International Congress of Quantum Chemistry

June 22-27, 2009, Helsinki, Finland - Autofluorescent proteins in a new light: a quantum Monte Carlo study

Workshop on Ab Initio Modeling in Applied Biosciences

Dec 11-12, 2008, Uppsala University, Sweden - Autofluorescent proteins in a new light: a quantum Monte Carlo study

11th Asian Workshop on First-Principles Electronic Structure Calculations

Nov 2-5, 2008, National Sun Yat-sen University in Kaohsiung, Taiwan - Autofluorescent proteins: Are first-principle calculations predictive?

Workshop on Time-Dependent Density-Functional Theory: Prospects and Applications

Sep 10-15, 2008, Benasque Center for Science, Benasque, Spain - Quantum Monte Carlo for electronic structure problems

Summer School: Quantum Monte Carlo from minerals and materials to molecules

July 9-19, 2007, University of Illinois at Urbana-Champaign, USA - Excitation energies of photoactive biomolecules from quantum Monte Carlo

Progress in ab-initio modelling of biomolecules: Towards computational spectroscopy

Apr 2-4, 2007, Universitá di Roma ''La Sapienza'', Italy - Quantum Monte Carlo methods in electronic structure theory

Forward Look Workshop on European Computational Physics

Nov 13-14, 2006, Forschungszentrum Juelich, Germany - Excitations in (bio)molecules from quantum Monte Carlo

11th Nanoquanta Workshop on Electronic Excitations

Sep 19-22, 2006, Houffalize, Belgium - Excitations in biomolecules from quantum Monte Carlo

Progress in Ab-initio Modeling of Biomolecules: Methods and Applications

Jul 3-7, 2006, Lorentz Center, Leiden, The Netherlands - Quantum Monte Carlo methods for electronic structure problems

Spring School 2006: Computational Methods in Condensed Matter Physics

Mar 6-17, 2006, Forschungszentrum Juelich, Germany - Excited states in quantum Monte Carlo: a self-consistent
scheme for wave function optimization

Psi-k 2005 Conference toward atomistic materials design

Sep 17-21, 2005, Schwäbisch Gmünd, Germany - Quantum Monte Carlo methods for many-body systems

Summer School on Fundamental Problems in Statistical Physics XI

Sep 4-17, 2005, Leuven, Belgium - Quantum Monte Carlo for ground and excited-state calculations

Symposium of the Deutsche Forschungsgemeinschaft Programme

Modern and Universal First-principles Methods for Many-electron Systems in Chemistry and Physics

Jul 4-6, 2005, Bonn, Germany - Quantum Monte Carlo for excited states of photoactive molecules

XII Workshop on Computational Material Science: Total Energy and Force Methods

Jan 12-15, 2005, Trieste, Italy - Wave function optimization for accurate quantum Monte Carlo
calculations

Conference on Computational Physics 2004

Sep 1-4, 2004, Genova, Italy - Ground and excited-state quantum Monte Carlo energies:
the importance of wave function optimization

16th Workshop on Recent Developments in Electronic Structure Methods

May 28-30, 2004, Rutgers University, New Jersey, USA - Lectures on Variational Monte Carlo for molecular systems

School on Continuum Quantum Monte Carlo Methods

Jan 12-23, 2004, Trieste, Italy - Quantum Monte Carlo study of photoactive molecules

American Chemical Society National Meeting

Sep 7-11, 2003, New York, USA - Surface physics with quantum Monte Carlo

Workshop on ''Ab-initio Many-Body Theory for Correlated Electron Systems''

Aug 25-29, 2003, Trieste, Italy - Quantum Monte Carlo calculations on materials

Physics School ''Modeling and Simulation in Micro-Nano Technologies and Material Engineering''

Apr 7-11, 2003, Toulouse, France - Quantum Monte Carlo pseudopotential calculations for reactions on Si
surfaces

March Meeting of the American Physical Society

Mar 3-7, 2003, Austin, Texas, USA - Quantum Monte Carlo study of H2 dissociation on Si(001)

43rd Sanibel Symposium

Feb 22-Mar 1, 2003, St. Augustine, Florida, USA - Hydrogen adsorption on Si(001): a quantum Monte Carlo study

European Physical Society, CMMP 2002

Apr 7-11, 2002, Brighton, England - Quantum Monte Carlo calculations of hydrogen adsorption on Si(001)

European Materials Research Society, Spring Meeting 2002

June 18-21, 2002, Strasbourg, France - Forces in quantum Monte Carlo from correlated sampling

March Meeting of the American Physical Society

Mar 12-16, 2001, Seattle, WA, USA - The puzzle of H2 on Si(001): a quantum Monte Carlo study

X Workshop on Computational Material Science: Total Energy and Force Methods

Jan 11-13, 2001, Trieste, Italy - Correlated sampling for the computation of forces in quantum Monte Carlo

Pacifichem 2000, IV International Chemical Congress of Pacific Basin Societies

Dec 14-19, 2000, Honolulu, Hawaii, USA - Energy derivatives in quantum Monte Carlo: Forces and optimization

Psi-k 2000 Conference on Ab Initio Calculations of Complex Processes in Materials

Aug 22-26, 2000, Schwäbisch Gmünd, Germany - Computation of forces in quantum Monte Carlo

XII Workshop on Recent Developments in Electronic Structure Methods

May 19-22, 2000, Georgia Institute of Technology, Atlanta, GA, USA - Correlation effects in Compton profiles of Lithium

Workshop on Physics of Insulators

June-July 1998, Aspen Center for Physics, Aspen, Colorado, USA - Momentum distribution and Compton profiles of solid Lithium

Workshop on Numerical Methods for Strongly Interacting Quantum Systems

Nov-Dec 1997, Institute for Nuclear Theory, University of Washington, Seattle, WA, USA - Excitation energies from density functional perturbation theory

IX Workshop on Recent Developments in Electronic Structure Methods

May 31-June 2, 1997, Cornell University, Ithaca, NY, USA - Quantum Monte Carlo, local density and generalized gradient approximations

Workshop on Real atoms and solids, core and valence electrons,

April 8-10, 1997, Universitá di Roma ''La Sapienza'', Italy

## Invited Seminars

- A rigorous framework to model photo-excitations in quantum Monte Carlo

Mini-Symposium on Uncertainty in Quantum Chemistry

May 16, 2019, Center for Multiscale Theory and Computation, Muenster, Germany - "Exciting" news in quantum Monte Carlo

KNCV/Computational and Theoretical Chemistry kick-off meeting

March 26, 2019, Amsterdam, The Netherlands - A rigorous ab initio framework to model photo-excitations in quantum Monte Carlo

Physics@Veldhoven 2019

January 22-23, 2019, Veldhoven, The Netherlands - Using the force in quantum Monte Carlo

November 28, 2018, Chemistry Department, Cambridge University, England (A. Thom) - Introduction to quantum Monte Carlo methods

Winter school of the Finnish Doctoral Training Network in Condensed Matter and Material Physics

November 27-28, 2017, Tampere, Finland (T. Rantala) - Excitations of (bio)organic molecules from quantum Monte Carlo

January 29, 2014, Center for Multiscale Theory and Computation, University of Muenster, Germany (J. Neugebauer) - Predictive calculations of excited states: A mirage?

November 3, 2013, Institute of Physical Chemistry, KIT Karlsruhe, Germany (C. Jacob) - Solving the Schrödinger equation by random walks: Introduction to quantum Monte Carlo methods

August 26-31, 2013, Convergent Distributed Environment for Computational Spectroscopy Summer School, Geneva, Switzerland (T. Wesolowski) - Solving the Schrödinger equation by random walks: Introduction to quantum Monte Carlo methods

December 12-16, 2011, Winter School for Theoretical Chemistry and Spectroscopy, Han-sur-Lesse, Belgium (B. Ensing). - Solving the Schrödinger equation by random walks: Introduction to quantum Monte Carlo methods

May 16-17, 2011, Chemistry Department, Torino, Italy (R. Dovesi) - Quantum Monte Carlo for photochemistry

Winter Modeling 2010, Meeting of the Italian Chemical Society

February 26, 2010, Scuola Normale Superiore di Pisa, Italy (V. Barone) - Photoactive biomolecules: Are first-principle calculations predictive?

Scientific meeting on Chemistry related to Physics and Material Sciences, NWO/CW

February 15-16, 2010, Veldhoven, The Netherlands - Autofluorescent proteins: Do first-principle calculations have predictive power?

June 26, 2008, Amsterdam Center for Multiscale Modeling, The Netherlands (P. Bolhuis) - Quantum Monte Carlo methods in electronic structure theory

Multi-scale Computational Chemistry, Spring meeting of the Swiss Association of Computational Chemistry

March 28, 2008, University of Fribourg, Switzerland (C. Daul) - Excitations in (bio)molecules from quantum Monte Carlo

March 27, 2008, Competence Center for Computational Chemistry, Zurich, Switzerland (H.P. Luethi) - Autofluorescent proteins: Do first-principle calculations have predictive power?

March 4, 2008, Paul Scherrer Institute, Zurich, Zwitzerland (R. Morf) - Photoactive molecules in a new theoretical light

May 24, 2007, Institute of Physical Chemistry, Aachen, Germany (A. Luchow) - Excited states in quantum Monte Carlo: a self-consistent scheme for wave function optimization

Oct 18, 2005, Vrije Universiteit, Theoretical Chemistry, Amsterdam, The Netherlands (E.J. Baerends) - Quantum Monte Carlo calculations of excitations in photoactive molecules

Nov 18, 2004, Ecole Polytechnique, Laboratoire des Solides Irradies, Paris, France (L. Reining) - Excitations in photoactive molecules from quantum Monte Carlo

Jun 23, 2004, Chemistry Department, Ruhr-Universitaet Bochum, Germany (D. Marx) - Photoactive molecules: do first-principle calculations have predictive power?

Apr 15, 2004, Institute for Theoretical Physics, Utrecht, The Netherlands (B. Farid) - Correlated calculations of hydrogen interaction with the Si(001) surface

Nov 9, 2000, Cavendish Laboratory, Cambridge, England (R. Needs) - Prospects for quantum Monte Carlo molecular dynamics

Apr 27, 2000, Fritz-Haber Institute, Berlin, Germany (P. Kratzer) - Recent developments in quantum Monte Carlo: calculation of forces and
optimized wave functions

Mar 2, 2000, Universitè Pierre et Marie Curie, Paris, France (A. Savin) - Compton profiles of Lithium: a quantum Monte Carlo approach

Nov 14, 1997, University of Purdue, West Lafayette, Indiana, USA (G. Giuliani) - What's right and what's wrong about present day density functionals

Feb 26, 1997, University of Missouri, Columbia, Missouri, USA (G. Vignale)