NOV 2020     (Virtual) Invited talk, Sydney CPPC series, Australia.

OCT 2020     (Virtual) Invited seminar, Department of Mathematical Physics, Institute of Physics, University of Sao Paulo, Brazil.

MAY 2020     (Virtual) Invited talk at the Institute of Astronomy, Geophysics and Atmospheric Sciences at University of Sao Paulo, Brazil.

MAY 2020     (Virtual) Invited talk at Fluminense Federal University, Brazil.


FEB 2020     Invited talk at Tohoku University, Sendai, Japan

FEB 2020     Invited speaker at "Cosmic acceleration" conference at Kavli IPMU, Japan, Ultra Light Scalar Field Dark Matter

DEC 2019     Astroparticle Seminar Max Planck Institute for Physics, Munich, Germany

DEC 2019     Invited talk at University of Amsterdam, Netherlands

NOV 2019     Invited talk at Swansea University, United Kingdom

SEP 2019     Parallel talk at COSMO 2019, Aachen, Germany

JUL 2019      Invited parallel talk at the 11th International Symposium Quantum Theory and Symmetry, Montréal, Canada

JUN 2019     Invited talk at the 2019 String Theory and Cosmology (GRS) Seminar, Barcelona, Spain

FEB 2019     Invited plenary talk at the FAPESP-JSPS Workshop, University of São Paulo, Unified Dark Energy and Dark Matter          Superfluid.

MAR 2018     North-East Cosmology Workshop, McGill University, Unified Dark Energy and Dark Matter Superfluid.

JAN 2018     Invited seminar, Max Planck Institute for Astrophysics, Unified Dark Energy and Dark Matter Superfluid.

DEC 2017     Invited cosmology seminar, Fermilab, Unified Dark Energy and Dark Matter Superfluid.

JAN 2017     Invited particle theory seminar, Harvard University, Holographic Curvature Perturbations in a Cosmology with a Space-                            Like Singularity.


MAY 2017    McGill-Dartmouth Cosmology Day, McGill University, Early universe cosmology and dark energy: from the Big Bang to the l                     late expansion of the universe.

DEC 2016    Invited cosmology seminar, Perimeter Institute, Cosmological fluctuations in an AdS/CFT cosmology.

DEC, 2016   Invited talk at the Cosmology Journal Club, Perimeter Institute, Searching for Dark Energy.

JUN 2016    Invited seminar, Princeton University, Dark Energy from 21cm Intensity Mapping: the BINGO Telescope.

SEPT 2013 Cosmology and Quantum Gravity: Dark Matter, Dark Energy and Holography Workshop, Stability of an Interacting DE/DM                        Model with Yukawa Coupling.

JUN 2012   Cosmology Workshop, University of São Paulo, Brazil, Stability in Dark Energy Models.

SEPT 2011 Northeast Cosmology Workshop, McGill University, Montreal, Canada, The Trans-Planckian Problem in the Healthy                                  Extension of Horava-Lifshitz Gravity.

NOV 2010  I Symposium Mario Novello on Bouncing Models, Mangaratiba, RJ, Brazil, Horava-Lifshitz Gravity: From Minimal to the                            General Covariance.

FEB. 2010  IX Workshop New Physics in Space, Campos do Jordao, SP, Brazil, Cosmological Perturbations and Structure Formation in                   Field Theory Model of Dark Energy and Dark Matter.