Conferences and seminars : 

International Congress of Mathematical Physics,
Geneva, Switzerland, August 27, 2021.
 Conference
Analytic and algebraic methods in physics,
Prague, Czech Republic, September 1013, 2019.
Invited Talk: Spectral and scattering theory of onedimensional coupled photonic crystals.
 Mathematical Physics Seminar,
Pontifical Catholic University of Chile, Santiago, Chile, August 14, 2019.
Invited Talk: Ruled strips with asymptotically diverging twisting.

IWOTA 2019,
Instituto Superior Técnico, Lisbon, Portugal, July 2226, 2019.
Invited Talk:
Ruled strips with asymptotically diverging twisting.

Workshop on Analysis in Kagurazaka 2019,
Tokyo University of Science, Tokyo, Japan, January 26, 2019.
Plenary Talk:
Quantum time delay for unitary operators.

Special Mathematics Seminar,
Nagoya University, Nagoya, Japan, January 24, 2019.
Invited Talk: Ruled strips with asymptotically diverging twisting.

Results in Contemporary Mathematical Physics,
Santiago, Chile, December 1721, 2018.

Random Physical Systems,
Puerto Natales, Chile, December 1115, 2018.

Vulgarization Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, October 1, 2018.
Invited Talk:
¿Qué es la desconocida en la ecuación de Einstein?

Vulgarization Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, September 28, 2018.
Invited Talk: ¿Qué es la desconocida en la ecuación de Einstein?

XXXI Jornada de Matemática de la Zona Sur,
Valdivia, Chile, April 2527, 2018.
Invited Talk: Quantum time delay for unitary propagators.
 Mathematical Physics Seminar,
Pontifical Catholic University of Chile, Santiago, Chile, April 4, 2018.
Invited Talk: Quantum time delay for unitary propagators.
 Operator Theory Seminar,
University of Kyoto, Japan, February 2, 2018.
Invited Talk: Quantum time delay for unitary propagators.

MAFIA Seminar, Czech Technical University, Prague, Czech Republic,
December 12, 2017.
Invited Talk: Quantum time delay for unitary propagators.

Colloquium, University of Concepción, Concepción, Chile,
November 22, 2017.
Invited Talk:
Spectral analysis of quantum walks with an anisotropic coin.

Mathematical Congress of the Americas 2017,
Montreal, Canada, July 2428, 2017.
Invited Talk: Spectral analysis of quantum walks with an anisotropic coin.

Colloquium, University of Talca, Talca, Chile, May 25, 2017.
Invited Talk: Spectral analysis of quantum walks with an anisotropic coin.

Top MathΦ Workshop, Santiago, Chile, April 2427 & May 25, 2017.
Plenary Talk:
Spectral properties of horocycle flows for compact surfaces of constant negative
curvature.
 Conference
Spectral Days 2017,
Stuttgart, Germany, April 37, 2017.
Plenary Talk: Spectral analysis of quantum walks with an anisotropic coin.

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, March 23, 2017.
Invited Talk: Spectral analysis of quantum walks with an anisotropic coin.
 Mathematical Physics Seminar,
Shinshu University, Matsumoto, Japan, February 9, 2017.
Invited Talk:
TwoHilbert spaces Mourre theory for the LaplaceBeltrami operator on manifolds
with asymptotically cylindrical ends.
 Operator Theory Seminar,
University of Kyoto, Japan, January 27, 2017.
Invited Talk:
Spectral and scattering properties at thresholds for the Laplacian in a halfspace
with a periodic boundary condition.
 Differential Equations Seminar,
Nagoya University, Japan, January 23, 2017.
Invited Talk: Spectral properties of horocycle flows for compact surfaces of constant negative
curvature.
 Conference
Spectral Theory of Dynamical Systems and Related Topics,
CIRM, France, October 1014, 2016.
Invited Talk:
Degree, mixing, and absolutely continuous spectrum of cocycles with values
in compact Lie groups.

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, June 23, 2016.
Invited Talk:
Degree, mixing, and absolutely continuous spectrum of cocycles with values
in compact Lie groups (part 2).

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, June 16, 2016.
Invited Talk:
Degree, mixing, and absolutely continuous spectrum of cocycles with values
in compact Lie groups (part 1).
 Conference
Analytic and algebraic methods in physics,
Prague, Czech Republic, June 69, 2016.
Invited Talk:
Commutator criteria for strong mixing.

Mathematical Physics Seminar
University of São Paulo, São Paulo, Brazil, January 21, 2016.
Invited Talk: Commutator criteria for strong mixing.
 Conference
Ergodic Theory of Dynamical Systems, Będlewo, Poland,
November 2228, 2015.
Invited Talk: Spectral properties of horocycle flows for surfaces of negative
curvature.

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, November 5, 2015.
Invited Talk: Spectral properties of horocycle flows for surfaces of negative
curvature.

Vulgarization Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, October 23, 2015.
Invited Talk: ¿Qué es la desconocida en la ecuación de Einstein?
 Conference
Frontiers of linear dynamics, CIRM, France, September 28October 2, 2015.
Invited Talk: Commutator criteria for strong mixing.

Vulgarization Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, September 21, 2015.
Invited Talk: ¿Qué es la desconocida en la ecuación de Einstein?

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, August 27, 2015.
Invited Talk: Spectral and scattering properties at thresholds for the Laplacian in a
halfspace with a periodic boundary condition.

Summer School on Current Topics in Mathematical Physics,
Viña del Mar, Chile, August 37, 2015.

XVIII International Congress on Mathematical Physics,
Santiago, Chile, July 27  August 1, 2015.

Seminar of PDE and Spectral Theory, LMU, Munich, Germany, June 18,
2015.
Invited Talk: Commutator criteria for strong mixing.

Seminar of PDE and Spectral Theory, LMU, Munich, Germany, June 16,
2015.
Invited Talk: Spectral and scattering properties at thresholds for the Laplacian in a halfspace
with a periodic boundary condition.
 Himeji Conference on Partial Differential Equations,
Himeji, Japan, March 57, 2015.
Plenary Talk: Commutator criteria for strong mixing.
 7th Nagoya Workshop on Differential Equations,
Nagoya, Japan, March 35, 2015.
Plenary Talk: Spectral and scattering properties at thresholds for the Laplacian in a
halfspace with a periodic boundary condition.

CDSNS Colloquium, Georgia Tech, Atlanta, USA, February 23, 2015.
Invited Talk:
Commutator methods for the spectral analysis of time changes of horocycle flows.

Doppler Institute Seminar, Doppler Institute, Prague, Czech Republic, January 6, 2015.
Invited Talk:
Resolvent expansions and continuity of the scattering matrix at embedded thresholds:
the case of quantum waveguides.

LXXXIII SOMACHI conference, Termas de Quinamávida, Chile, December 46, 2014.
Invited Talk: Commutator criteria for strong mixing.
 Conference
Spectral Theory and Mathematical Physics,
Santiago, Chile, November 2428, 2014.

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, November 6, 2014.
Invited Talk: Commutator criteria for strong mixing.
 Conference
Spectral Days 2014, CIRM, France, June 913, 2014.
Invited Talk: Resolvent expansions and continuity of the scattering matrix at embedded thresholds: the case of quantum waveguides.
 Conference
Ergodic Theory And Dynamical Systems, Torún, Poland, May 1216, 2014.
Invited Talk:
The absolute continuous spectrum of skew products of compact Lie groups.

Spectral Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, April 10, 2014.
Invited Talk: Resolvent expansions and continuity of the scattering matrix at embedded thresholds.

EDAI Seminar of Dynamical Systems,
Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, April 4, 2014.
Invited Talk: The absolute continuous spectrum of skew products of compact Lie groups.

Seminar of Mathematics,
Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, April 2, 2014.
Invited Talk:
Commutator methods for unitary operators.

Seminar of Analysis and Differential Geometry,
Emory University, Atlanta, USA, March 4, 2014.
Invited Talk: TwoHilbert spaces Mourre theory for the LaplaceBeltrami operator on manifolds
with asymptotically cylindrical ends.

PDE and Mathematical Physics Seminar,
University of Bordeaux, Bordeaux, France, January 14, 2014.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle flows.

Mathematical Physics Seminar, University of Grenoble, Grenoble, France, January 6, 2014.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle flows.

Seminar Algebra & Geometrie, University of Basel, Basel, Switzerland, December 20, 2013.
Invited Talk: The absolute continuous spectrum of skew products of compact Lie groups.

Groups and Geometry Seminar, University of Geneva, Geneva, Switzerland, December 17, 2013.
Invited Talk: The absolute continuous spectrum of skew products of compact Lie groups.

LXXXII SOMACHI conference, Olmue, Chile, November 79, 2013.
Invited Talk: The absolute continuous spectrum of skew products of compact Lie groups.

Spectral Theory Seminar, Pontifical Catholic University of Chile, Santiago, Chile, September 26, 2013.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle flows.

Dynamical Systems Seminar, Universidad de la República, Montevideo, Uruguay,
September 20, 2013.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle flows.

Spectral Theory Seminar, Pontifical Catholic University of Chile, Santiago, Chile, August 29, 2013.
Invited Talk: The absolute continuous spectrum of skew products of compact Lie groups.

6th Pacific RIM Conference on Mathematics, Sapporo, Japan, July 15, 2013.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle flows.
 Conference
Nonpositive curvature, isometric actions, and dynamics of cocycles,
Cajón del Maipo, Chile, May 611, 2013.
 Working Seminar: Dynamics and its Working Tools, Penn State University, State College, USA, January 1429, 2013.
MiniCourse:
Commutator methods with applications to the spectral analysis of dynamical systems.
 Science Seminar, Penn State University, State College,
USA, January 23, 2013.
Invited Talk:
Time delay and Calabi invariant in classical scattering theory.
 MittagLeffler Seminar, MittagLeffler Institute, Stockholm, Sweden, December 6, 2012.
Invited Talk: Commutator methods for unitary operators.
 Seminar of Mathematical Physics, University of Lyon 1, Lyon, France, November 23, 2012.
Invited Talk: Time delay and Calabi invariant in classical scattering theory.
 Workshop on Spectral Theory and Mathematical Physics, University of Orsay,
Paris, France, November 21, 2012.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle flows.
 Workshop on Mathematical Physics, University of CergyPontoise, Paris, France,
November 19, 2012.
Invited Talk: Commutator methods for unitary operators.
 Seminar on Dynamical Systems, Pontifical Catholic University of Chile,
Santiago, Chile, October 29, 2012.
Invited Talk: Commutator methods for the spectral analysis of time changes of horocycle
flows.
 Seminar on PDE and Spectral Theory, Pontifical Catholic University of Chile, Santiago, Chile, October 18, 2012.
Invited Talk: Time delay and Calabi invariant in classical scattering theory.
 Seminar on PDE and Spectral Theory, Pontifical Catholic University of Chile, Santiago, Chile, October 4, 2012.
Invited Talk: Commutator methods for unitary operators.
 Mathematics Seminar, University of Lyon 1, Lyon, France, September 5, 2012.
Invited Talk: Commutator methods for the spectral analysis of time changes
of horocycle flows.

International Congress on Mathematical Physics ICMP2012,
Aalborg, Denmark, August 611, 2012.
Contributed Talk: Time delay and Calabi invariant in classical scattering theory.
 Math Physics Seminar, Georgia Tech, Atlanta, USA, February 6, 2012.
Invited Talk: Positive commutator methods for unitary operators.
 Mathematics Seminar, Universidad de Chile, Santiago, Chile, November 16, 2011.
Invited Talk: Quantum commutators and the Poincaré disc.
 Informal Mathematics Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, September 28, 2011.
Invited Talk: Quantum commutators, Hamiltonian Mechanics
and the Poincaré disc.
 Seminar on PDE and Spectral Theory, Pontifical Catholic University of Chile,
Chile, September 1, 2011.
Invited Talk: TwoHilbert spaces Mourre theory for the LaplaceBeltrami operator on manifolds
with asymptotically cylindrical ends.
 Seminar of Mathematics, University of Neuchâtel, Neuchâtel, Switzerland, July 25, 2011.
Invited Talk: TwoHilbert spaces Mourre theory for the LaplaceBeltrami operator on manifolds
with asymptotically cylindrical ends.
 Seminar of Mathematics, University of Neuchâtel, Neuchâtel, Switzerland, February 16, 2011.
Invited Talk:
Analyse spectrale de la matrice d'adjacence sur des graphes.
 Seminar of Mathematical Physics, University of Grenoble, Grenoble, France, February 7, 2011.
Invited Talk:
Asymptotics of the spectral shift function for Dirac operators with nonconstant magnetic
fields.

First Joint Meeting of the AMS and the SOMACHI, Pucón, Chile, December 1518,
2010.
Invited Talk:
A formula relating localisation observables to the variation of energy in Hamiltonian
dynamics.

Spectral Days, Santiago, Chile, September 2024, 2010.
 Conference
Spectral Problems for Quantum Hamiltonians,
EPFL, Lausanne, Switzerland, February 2226, 2010.
Plenary Talk: Asymptotics of the spectral shift function for Dirac operators
with nonconstant magnetic fields.
 London Analysis and Probability Seminar, Imperial College, London, United Kingdom,
February 11, 2010.
Invited Talk:
Recent developments in the theory of quantum time delay.
 Seminar of Mathematical Physics,
University of Grenoble, Grenoble, France, February 1, 2010.
Invited Talk:
A new formula relating localisation operators to time operators.

30th Conference on Quantum Probability and Related Topics,
Pontifical Catholic University of Chile, Santiago, Chile, November 2328, 2009.
Plenary Talk: A new formula relating localisation operators to time operators.
 Seminar of Stochastic Analysis and Mathematical Physics,
Pontifical Catholic University of Chile, Santiago, Chile, May 12, 2009.
Invited Talk:
Spectral analysis for convolution operators on locally compact groups.
 Spectral and Scattering Theory Seminar,
Pontifical Catholic University of Chile, Santiago, Chile, May 7, 2009.
Invited Talk:
New formulae for the wave operators for a rank one interaction.
(Winding number of the scattering matrix:
simulation 1,
simulation 2).
 Seminar of Mathematics, Universidad de Chile, Santiago, Chile, October 8, 2008.
Invited Talk: Time delay for dispersive quantum Hamiltonians.
 Spectral and Scattering Theory Seminar, Pontifical Catholic University of Chile,
Santiago, Chile, September 26, 2008.
Invited Talk:
Time delay for dispersive quantum Hamiltonians.
 Conference
Spectral and Scattering Theory for Quantum Magnetic Systems,
CIRM, France, July 711, 2008.
Plenary Talk:
Magnetic Dirac operators with Coulombtype perturbations.
 Workshop in Noncommutative Geometry and Scattering Theory,
University of Lyon 1, Lyon, France, June 26, 2008.
Invited Talk: Fonction de décalage spectral II. Formules de représentation.
 Workshop in Noncommutative Geometry and Scattering Theory,
University of Lyon 1, Lyon, France, March 27, 2008.
Invited Talk: Fonction de décalage spectral I. Introduction.
 Seminar of Mathematical Physics, University of Lyon 1, Lyon, France, March 14, 2008.
Invited Talk: Analyse spectrale des opérateurs de convolution sur des groupes
localement compacts.
 PhD Students' Seminar, University of CergyPontoise,
CergyPontoise, France, February 5, 2008.
Invited Talk: Temps de retard en théorie de la diffusion quantique III.
 Meeting
Spectral Problems in Quantum Mechanics,
CergyPontoise, France, January 31February 1, 2008.
Plenary Talk: Spectral analysis for convolution operators on groups.
 PhD Students' Seminar, University of CergyPontoise,
CergyPontoise, France, January 29, 2008.
Invited Talk: Temps de retard en théorie de la diffusion quantique II.
 PhD Students' Seminar, University of CergyPontoise,
CergyPontoise, France, January 22, 2008.
Invited Talk: Temps de retard en théorie de la diffusion quantique I.
 Seminar of Mathematical Physics, University of Lille 1, Lille,
France, December 4, 2007.
Invited Talk: Temps de retard en théorie de la diffusion quantique.
 Seminar of Mathematical Physics, University of Grenoble,
Grenoble, France, November 26, 2007.
Invited Talk: Temps de retard en théorie de la diffusion quantique.
 Seminar of Mathematical Physics, University of Geneva, Geneva,
Switzerland, November 12, 2007.
Invited Talk: Spectral analysis for convolution operators on groups.
 Workshop in Noncommutative Geometry and Scattering Theory,
University of Lyon 1, Lyon, France, October 25, 2007.
Invited Talk: Temps de retard en théorie de la diffusion quantique.
 Seminar of Geometry, PDE, and Mathematical Physics, University of CergyPontoise,
Cergy, France, October 17, 2007.
Invited Talk: Spectral analysis for convolution operators on groups.
 Conference QMath10, Moeciu, Romania, September 1015, 2007.
Contribution: Spectral analysis for convolution operators on groups.
 Seminar of Mathematical Physics, University of CergyPontoise,
CergyPontoise, France, April 30, 2007.
Invited Talk: Analyse spectrale de la matrice d'adjacence sur des graphes.
 Conference CSMT2007, Sousse, Tunisia, March 1922, 2007.
Plenary Talk:
Toeplitz algebras and spectral results for the onedimensional Heisenberg model.
 Seminar of Mathematical Physics, IPNL, Lyon, France, February 28, 2007.
Invited Talk: Généralisation du temps de retard en théorie de la
diffusion.
 Seminar of Mathematical Physics, LPT, Orsay, France, January 22, 2007.
Invited Talk: Généralisation du temps de retard en théorie de la
diffusion.
 Seminar of Mathematical Physics and Geometry, University of Paris 7, Paris, France,
January 16, 2007.
Invited Talk: Algèbres de Toeplitz et résultats spectraux pour l'opérateur d'Heisenberg 1dimensionnel.
 Seminar of Spectral Problems and Mathematical Physics, IHP, Paris, France, November 20, 2006.
Invited Talk: Généralisation du temps de retard en théorie de la diffusion.
 Seminar of Mathematical Physics, University of Bordeaux 1, Bordeaux, France, October 3, 2006.
Invited Talk: Généralisation du temps de retard en théorie de la diffusion.
 Seminar of Mathematical Physics, University of Geneva, Geneva, Switzerland, September 25, 2006.
Invited Talk: Algèbres de Toeplitz et résultats spectraux pour l'opérateur d'Heisenberg 1dimensionnel.
 Conference Transport and Spectral Problems in Quantum Mechanics,
CergyPontoise, France, September 36, 2006.
 Seminar of Mathematical Physics, TU, München, Germany, July 11, 2006.
Invited Talk: Generalization of time delay in scattering theory.
 Seminar of Analysis, University of Nantes, Nantes, France, April 14, 2006.
Invited Talk: Temps de retard dans les guides d'ondes quantiques.
 Seminar of Spectral Analysis and Mathematical Physics, University of Orsay, Paris,
France, March 30, 2006.
Invited Talk: Dirac operators with variable magnetic field of constant direction.
 5th Network Meeting Analysis and Quantum, Vienna, Austria,
March 46, 2006.
 Seminar of Geometry, PDE and Mathematical Physics, University of CergyPontoise,
CergyPontoise, France, January 25, 2006.
Invited Talk: Dirac operators with variable magnetic field of constant direction.
 Seminar of Spectral Analysis and Mathematical Physics, University of Orsay, Paris,
France, December 1, 2005.
Invited Talk: Algèbres de Toeplitz et résultats spectraux pour l'opérateur
d'Heisenberg 1dimensionnel.
 Seminar of Spectral Analysis and Mathematical Physics, University of Orsay,
Paris, France, October 27, 2005.
Invited Talk: Temps de retard dans les guides d'ondes quantiques.
 Seminar of Theoretical Physics, University of Geneva, Geneva, Switzerland, June 27, 2005.
Invited Talk: Opérateurs conjugués et invariance de translation en théorie
de la diffusion.
 Seminar of Analysis and Topology, University of Lyon 1, Lyon, France, June 1, 2005.
Invited Talk: Time delay in quantum waveguides.
 Conference Mathematical Methods in Quantum Mechanics,
Bressanone, Italy, February 2126, 2005.
 Conference QMath9, Giens, France, September 1216, 2004.
Contribution: Dirac operators with variable magnetic field of constant direction.
 Conference Colloque du bicentenaire de Charles Francois Sturm,
Geneva, Switzerland, September 1519, 2003.
 Seminar of Mathematical Physics, Instituto Superior Técnico, Lisbon, Portugal,
August 7, 2003.
Invited Talk: An introduction to the conjugate operator method.
 International Congress on Mathematical Physics ICMP2003,
Lisbon, Portugal, July 28August 2, 2003.
 Young Researchers Symposium on Mathematical Physics,
Lisbon, Portugal, July 2526, 2003.
 Conference Semiclassical Meeting, Nantes, France, January 810, 2003.
