Nonlinearity, Nonlocality and Ultrametricity International Conference: "Zeta functions in Physics: a comprehensive review", Faculty of Mathematics (University of Belgrade), Mathematical Institute (Serbian Academy of Sciences and Arts) and Serbian Academy of Nonlinear Sciences (SANS), Belgrade, Serbia (May 28, 2025) By invitation
ICE-CSIC: 25 Years of Discovery and Innovation: "What I remember from CEAB (… with some certainty)" (February 3, 2025) By invitation
11th Mathematical Physics Meeting: "Cosmology and mathematical singularities: A historical perspective", Faculty of Mathematics (University of Belgrade), Mathematical Institute (Serbian Academy of Sciences and Arts) and Serbian Academy of Nonlinear Sciences (SANS), Belgrade, Serbia (September 5, 2024) By invitation
ICE Pizza-Lunch Seminar: "Who was the first to discover that our Universe expands, and that it had an origin?" (April 12, 2024). Talk, Recording
Università degli Studi di Trento: "The true story of modern cosmology" (March 21, 2024) By invitation
Institute of Mathematics, Barcelona University (IMUB), Colloquium "Einstein's General Relativity and his visit to Barcelona in 1923" (December 20, 2023): By invitation
VII Cosmology and the Quantum Vacuum (CQV23), Benasque (Sep 10-16, 2023): "True Story of Modern Cosmology" (Sep 11, 2023): Keynote Talk, and Chairman of the Opening Session
Universitat Catalana d'Estiu, Liceu Renouvier, Prada C. (FR). Conference 2: "The birth of Modern Cosmology: Einstein's important role" (August 23, 2023, in Catalan): By invitation
Universitat Catalana d'Estiu, Liceu Renouvier, Prada C. (FR). Conference 1: "Scientific considerations on Einstein's visit to Catalonia" (August 22, 2023, in Catalan): By invitation
Symmetry 2023 - The 4th International Conference on Symmetry Barcelona (June 21-23, 2023), Conference: "Einstein, Barcelona, Symmetry & Cosmology" (June 21, 2023): By invitation
ICE Pizza-Lunch Seminar: "The scientific context of Einstein’s visit to Catalonia and Spain" (June 16, 2023). Talk, Recording
Royal Academy of Sciences and Arts of Barcelona (RACAB), Conference "Albert Einstein and Modern Cosmology" (June 1, 2023, in Catalan): By invitation, Recording
Polytechnical Lyceum Fablab, S Cugat, Conference "About infinity: From Philosophy to Physics, through Music and Mathematics" (January 17, 2023): By invitation
5th Institute of Space Sciences Summer School (Barcelona, July 4-15, 2022) , Conference Program "On the origins of Modern Cosmology" (13 July 2022). Talk2
5th Institute of Space Sciences Summer School (Barcelona, July 4-15, 2022) , Conference Program "Zeta Function approach to basic cosmological issues" (12 July 2022). Talk1
Recent Advances in Theoretical Cosmology and Astrophysics, Aristotle University of Thessaloniki, Greece (16-19 December 2021), Conference Program Short Story of Modern Cosmology (17 December 2021): Invited Talk
ICE/IEEC Pizza-Lunch Seminar, UAB: On my Book: The True Story of Modern Cosmology (October 22, 2021): Seminar, Recorded
Seminar given at the Institute of Astrophysics Central China Normal University, Wuhan, China: "Cosmology and Quantum Physics: An understandable approach" (May 21, 2021): By invitation
17th Russian Gravitational Conference-International Conference on Gravitation, Cosmology and Astrophysics (RUSGRAV-17), June 29 - July 3, 2020 Saint Petersburg, Russia, Conference Program On Cosmology, the Quantum Vacuum, and Zeta Functions (July 2, 2020): Invited Talk
Catalan Physical Society, Conference James Peebles and the cosmological revolution (January 29, 2020): By invitation
XI CPAN DAYS, Presentation Notes on the discovery of the universe expansion (October 22, 2019): Talk
The 2nd International Conference on Symmetry, Symmetry 2019 (Sep 1-7, 2019): "The Universe symmetry and its accelerated expansion: history and present issues" (Sep 6, 2019): Invited Talk
Modified Gravity and Cosmology: "Opening Address: Modified Gravity and Cosmology, SDO'60" (May 8, 2019): Opening Address
Humboldt Colloquium "Forschung ohne Grenzen. Das Erbe Alexander von Humboldts heute" Madrid, Spanien (11.–13. April 2019): "Beyond Humboldt’s Kosmos: On the discovery of the Universe expansion" (April 12, 2019): Invited presentation
Theoretical Physics Dept., University of Zaragoza: "Historical approach to the Universe expansion and the concept of Big Bang" (March 21, 2019): Invited Talk
ICE/IEEC Pizza-Lunch Seminar, UAB: On the history of the Universe expansion: Edwin Hubble, Georges Lemaître and Vesto Slipher (March 1, 2019): Seminar
Cantabria Institute of Physics (IFCA): "On the meaning of Big Bang" (Feb 8, 2019): Invited Talk
V Cosmology and the Quantum Vacuum (CQV18), Benasque (Sep 2-8, 2018): "Zeta functions, vacuum fluctuations, and cosmology" (Sep 7, 2018): Keynote Talk, and Chairman of the Opening Session
International Workshop Siberian Cosmology Days 2018 (SCD2018), TUSUR, Tomsk (Russia, 4 - 5 August, 2018): "Rediscovering the origins of modern Cosmology" (Aug 4, 2018): Plenary Talk, Best Talk Prize Award
International Conference on Quantum Field Theory and Gravity (QFTG18), TSPU, Tomsk (Russia, July 30 - August 5, 2018): "Zeta functions, vacuum fluctuations, and cosmology" (Aug 2, 2018): Plenary Talk
Summer school and Workshop on the Casimir Effect: Theory and Applications, NTNU, Trondheim (Norway, June 11-16, 2018), "Zeta functions, the Casimir effect, and cosmology" (June 15): Plenary Talk
Gravity and Cosmology 2018, Jan 29-Mar 9, 2018 Yukawa Institute for Theoretical Physics, Kyoto University, Japan: "Zeta Functions and Cosmological Applications" (March 2, 2018): Invited Closing Talk
ICE/IEEC Pizza-Lunch Seminar, UAB Filling up the gaps: on the beginning of modern cosmology (February 9, 2018): Seminar
3rd International Winter School-Seminar on Gravity, Astrophysics and Cosmology «Petrov School» Kazan: "On the origins of modern cosmology and a RG improved scenario" (November 30, 2017): Plenary Talk
Symmetry 2017- The First International Conference on Symmetry, Barcelona, Spain: "Zeta functions: symmetry and applications" (October 17, 2017): Plenary Talk
IV Cosmology and the Quantum Vacuum, Segovia, Spain: "Bing Bang, new singularities, and a renormalization group improved, unified accelerating scenario" (September 5, 2017): Keynote Talk
4th Korean-Japan Joint Workshop on Dark Energy at KMI, Nagoya, Japan: "On the concept of Bing Bang and a renormalization group improved, unified accelerating scenario" (August 28, 2017): Plenary Talk
5th CORE-U, Core of Research for the Energetic Universe, Hiroshima University, Japan: "On the concept of Bing Bang and a renormalization group improved, unified accelerating scenario" (August 22, 2017): By invitation
Yukawa Institute for Theoretical Physics, Kyoto University, Japan: "On the concept of Bing Bang and a renormalization group improved, unified accelerating scenario" (August 4, 2017): By invitation
Kobayashi-Maskawa Institute, Nagoya University, Japan: "Our Universe had (probably) an origin: Big Bang, cosmic singularities and quantum fluctuations" (August 2, 2017): By invitation
Università degli Studi di Trento: "Cosmology and Zeta Functions: XXV years Trento-Barcelona colab" (June 1, 2017), Sergio Zerbini's Institute's Fest: By invitation
ICE/IEEC Pizza-Lunch Seminar, UAB The Universe had (probably) an origin: Big Bang, cosmic singularities and quantum fluctuations (December 16, 2016): Seminar
CSIC Barcelona "Science Mondays": "The Universe had (probably) an origin: Big Bang, cosmic singularities and quantum fluctuations" (Oct 17, 2016): By invitation
International Conference on Cosmology and the Quantum Vacuum III (CQV16), Benasque (Sep 4-10, 2016): "The Universe had (probably) an origin: on singularity theorems and quantum fluctuations" (Sep 7, 2016): Chairman of the Opening Session
Università degli Studi di Trento: "The Universe had (probably) an origin: on the Theorem of Borde-Guth-Vilenkin" (July 26, 2016): Institute's Colloquium, by invitation
International Conference on "Casimir and van der Waals Physics: Progress and Prospects", IAS HKUST University Hong Kong (April 25-28, 2016) Leading Discussion Session: "The Casimir Force and the Universe" (April 28, 2016): By invitation
Catalan Physical Society, Conference Light as wave and particle: Albert Einstein and Max Planck (January 26, 2016): By invitation
VII CPAN Days, Presentation Technology Transfer Activities @ ICE-CSIC (December 1, 2015): Invited Talk
ICE/IEEC Pizza-Lunch Seminar, UAB On cosmology, infinities, and zeta functions (October 9, 2015): Seminar
III Russian-Spanish Congress, Santiago de Compostela (8-11 Sep 2015) Quantum Vacuum & Cosmology with a Background of Zeta Functions (Sep 11, 2015): By invitation
Università degli Studi di Trento: Data vs Theory on the light of the B2KP new results (July 23, 2015): Seminar
MITP Workshop “Quantum Vacuum and Gravitation” Mainz, Germany (June 22-26, 2015) Zeta functions, the Chowla-Selberg formula, and the Casimir effect (June 23, 2015): By invitation
Iberian Gravitational Wave Meeting, UPC Barcelona (12-14 May, 2015) The Big Bang Theory: historical annotations (May 12, 2015): Talk
International University of Catalonia, Barcelona, Spain Elements of modern cosmology: from the Big Bang to the future Universe (April 17, 2015): By invitation
Humboldt Kolleg, Fez, Morocco (March 4-6, 2015) Aspects of Modern Cosmology: Historical Insights and Open Questions (March 4, 2015): By invitation
ICE/IEEC Pizza-Lunch Seminar, UAB Issues and results of B2P in the context of the Big Bang model (January 16, 2015): Seminar
Dartmouth EE Just Scholars Dinner Talk Historical Issues of Modern Cosmology (January 7, 2015): By invitation
Dartmouth Physics and Astronomy: Cosmology Seminar Cosmology, B2P, and quantum fluctuations (January 6, 2015): By invitation
South Africa Gravity Society meeting (SAGS 2014) & George Ellis 75, Cape Town, South Africa (24-25 Nov 2014): BICEP2 and quantum fluctuations" (Nov 24, 2014): Invited talk
International Conference Dark Side of the Universe DSU2014, Cape Town, South Africa (17-21 Nov 2014): Vacuum fluctuations and non-local gravity models (Nov 20, 2014): Talk
International Conference on Cosmology and the Quantum Vacuum (CQV14), Benasque The BIG BANG, BICEP2, and Quantum Fluctuations (September 8, 2014): Talk
International Congress of Mathematicians ICM 2014, Seoul, Korea Non-local Lagrangian model for modified quantum gravity (August 20, 2014): Talk
International Congress of Mathematicians ICM 2014, Seoul, Korea Extensions of the Chowla-Selberg series formula with physical applications (August 14, 2014): Talk
Università degli Studi di Trento: BICEP2, inflation and quantum fluctuations (July 25, 2014): Seminar
ICE/IEEC Pizza-Lunch Seminar, UAB (May 16, 2014): Seminar
Casimir Physics 2014, Les Houches (France): Quantum Vacuum & Cosmology on a Background of Zeta Functions (March 30-April 4, 2014): Lectures
ICE/IEEC Pizza-Lunch Seminar, UAB (November 29, 2013): Seminar
Universite Toulouse III Paul Sabatier: Quantum Vacuum and Cosmology (with a Historical Perspective) (November 4-6, 2013): Lectures
Universidade Estadual de Londrina: Aspects of Non-local Models of Modified Einsteinian Gravity (October 21-26, 2013): Lectures
ICE/IEEC Pizza-Lunch Seminar, UAB (October 11, 2013): Seminar
University of Sankt Peterburg: On a Family of Non-local Gravity Models (October 4, 2013): Seminar
Università degli Studi di Trento: Modified Gravity: Non-local Models (July 26, 2013): Seminar
University of Sousse (Tunisia) (28-30 June, 2013): Invited Lecture
University of Fez (Morocco) (Mar 16, 2013): Invited Lecture
Università degli Studi di Trento (September 27, 2012): Seminar
International Workshop on Mathematical Structures in Quantum Systems and Applications (July 8-14, 2012): Invited lecture
Dartmouth College Mathematical Colloquium, Hanover, USA (Thursday, April 5, 2012): By invitation
ICE/IEEC Pizza-Lunch Seminar, UAB (March 16, 2012): Seminar
Casimir Workshop, Lorentz Center, Leiden (March 12-16, 2012): Invited Talk
Seminar Kobayashi-Maskawa Institute, Nagoya (Feb 16, 2012): Invited Seminar
Center for Mathematical Research, CRM UAB, Barcelona (Dec 14, 2011): Invited Seminar
Inaugural Meeting "The Mathematics Tree" (Madrid, 16 Nov 2011): Invited Presentation
Dual Year Russia-Spain 2011, Barcelona (Nov 8-11, 2011): Invited Talk
Tenth Workshop on Quantum Field Theory under the Influence of External Conditions QFEXT'11 CC Pedro Pascual, Benasque (Sep 18-24, 2011): Plenary Talk
Spanish Relativity Meeting ERE2011, Madrid (Sep 2, 2011): Invited Plenary Talk
ESF CASIMIR Topical Meeting: Casimir Forces, Vienna, Austria (May 11-13, 2011): Invited Talk
ICE/IEEC Pizza-Lunch Seminar, UAB (March 4, 2011): Seminar
2nd Year Graduate Course ICE/IEEC, UAB (November, 2010): Lectures
Universidad Tecnológica de Pereira, Colombia (September 9-16, 2010): Course, Seminars, Video
Beyond the Concordance Model International Conference (BCM10), Stellenbosch, IAS, South Africa (23-27 August, 2010): Invited Talk
International Conference on Quantum Field Theory and Gravity (ICQFTG10) (Tomsk, July 5-9, 2010): Inaugural Lecture
Cosmology, the Quantum Vacuum and Zeta Functions (EE60) (March 8-10, 2010): Discussion Vitae
Università degli Studi di Trento (November 6, 2009): Seminar
International Workshop QFEXT09, Norman, Oklahoma (September 21-25, 2009): Invited Talk
Summer Courses of the UAB, Faculty of Translation and Interpreting (in Catalan, July 8, 2009): Lecture
Fourth International Sakharov Conference on Physics, Lebedev Physical Institute (Moscow, May 18-23, 2009): Key Speach
Iver Brevik’s Fest, Trondheim University (May 8, 2009): Invited Lecture
Joves Talks ICE/IEEC, UAB (January 20, February 10, 2009): Lectures
Università degli Studi di Trento (October 24, 2008): Seminar
Dark Energy 2008, 3rd Biennial Leopoldina Conference, Ludwig-Maximilian-University Munich (October 7-11, 2008): Presentation
Non Linear Physics 2008 Barcelona (June 16-19, 2008): Lecture
4th International Conference on the Dark Side of the Universe, DSU2008, BUE, Cairo (June 1-5, 2008): Talk
Riemannn Journee, UPC (February 20, 2008): Lecture
Mathematical Seminar ETSEIB, UPC (February 14, 2008) ): Seminar
Cosmology Workshop Montpellier 07 (October 26, 2007): Talk
Ritsumeikan University Kyoto (October 7, 2007): Seminar
Yukawa Institute for Theoretical Physics (YITP) (September-October, 2007): Seminar
International Workshop QFEXT07, Leipzig (September 19, 2007): Talk
Spanish Relativity Meeting, ERE 2007 (July 12, 200/): Lecture
Quantum Field Theory and Gravity, QFTG’07, Tomsk, Russia (July 2, 2007): Inaugural Lecture
Quantum Theory and Symmetries – 5, QTS5, Valladolid (June 25, 2007): Talk
X Meeting of the Catalan Mathematical Society, Barcelona (June 15, 2007): Lecture
Non-Linear 2007, Ciudad Real (June 7, 2007): Talk
Black Holes and Naked Singularities ‘07, Milano (May 12, 2007): Seminar
Università degli Studi di Trento (March 9, 2007): Seminar
Universität Ulm (Blaubeuren, Graduate School) (November 30, 2006): Lecture
Cosmology Workshop Montpellier 06 (November 23, 2006): Seminar
Madrid Technical University (UPM), FFP8 (October 19, 2006): Talk
International Conference of Mathematicians (ICM 2006) Madrid (August 27, 2006): Talk
IRGAC 2006 (July 12, 2006): Talk
Madrid Autonomous University (UAM), DSU‘06 (June 21, 2006): Seminar
Università degli Studi di Trento (June 13, 2006): Seminar
CBPF Rio de Janeiro, IC 2006 (April 27, 2006): Conference
London IOP Meeting (March 9, 2006): Seminar
Montpellier II University (November 30, 2005): Seminar
EuroGDR Supersymmetry 2005 (November 4, 2005): Talk
Zaragoza University (October 28, 2005): Seminar
CosmoCaixa Barcelona (September 5, 2005): Opening talk Seminar
Calculations of the Casimir Effect in Cosmology, Harvard University, Cambridge, USA (Phillips Auditorium, Nov 15, 2002): Invited Talk
Popular lectures (in pdf or ppt format)
AstroBarcelona Society: "Brief history of the Cosmos and possible multiverses", Civic Center Vil·la Urània, Barcelona (June 4, 2025, in Catalan) By invitation
FÒRUM Bellaterra: “Gravity: so familiar and so unreachable”, Tertúlia del Fòrum, Bellaterra (March 20, 2025, in Catalan) By invitation, Talk
Hospitalet Torras & Bages Institute, Seminar: “Gravity, yet a quite unknown force” (February 26, 2025, in Catalan) Talk
ASTER Society: "Challenges of Cosmology and the Anthropic Principle", Agrupació Astronòmica de Barcelona (ÀSTER), Barcelona (June 18, 2024, in Catalan) By invitation, Talk
AstroBarcelona Society: "Looking at the Sky - From astronomical observations to the origin of Modern Cosmology", Civic Center Vil·la Urània, Barcelona (October 18, 2023, in Catalan) By invitation
The European Researchers Night 2023: "Einstein in Catalonia: Gravity and Cosmology", Civic Center Golferichs House, Barcelona (September 27, 2023, in Catalan) By invitation
Amics de la UNESCO, Arxiu Nacional de Catalunya, Sant Cugat del Vallès: "From the Big Bang to Dark Energy: A Brief History of the Cosmos" (November 3, 2021, in Catalan) By invitation
Sant Cugat-Valldoreix Astronomical Association: "From Sankt Petersburg to Sant Cugat: AASCV Last Talk" (December 17, 2020, in Catalan) By invitation
Sant Cugat-Valldoreix Astronomical Association: "Hawking's legacy: Answering the most difficult questions" (January 23, 2020, in Catalan) By invitation
Sant Cugat-Valldoreix Astronomical Association: "The origins of modern cosmology" (November 7, 2019, in Catalan) By invitation
Sant Cugat-Valldoreix Astronomical Association: "Stephen Hawking: Brief history of an endless Universe" (January 17, 2019, in Catalan) By invitation
UAB PhD Degree and PhD Special Prize Award Ceremony, "The expansion of the Universe: Edwin Hubble, Georges Lemaître, and Vesto Slipher" (November 16, 2018) Guest Speaker Presentation , video (min 27 to 47)
Sant Cugat-Valldoreix Astronomical Association: "Stephen Hawking: his most important discoveries" (February 22, 2018, in Catalan) By invitation
STICB Science-Religion Forum Opening Session: "Science vs Religion: confrontation or constructive dialog?" (January 16, 2018, in Catalan) Opening Year's Talk, by invitation
Sant Cugat-Valldoreix Astronomical Association: "Gravitational Waves, Inflation ... and all that" (December 15, 2017, in Catalan) SciDrops
Sant Cugat-Valldoreix Astronomical Association: "From Zero to Infinity" (December 14, 2017, in Catalan) Closing Year's Talk, by invitation
Terrassa Seminar "The Universe and its Origin .. in few minutes" (September 23, 2017, in Catalan) Invited Presentation
STICB Science-Religion Forum Opening Session: "On the origin of the Universe" (February 14, 2017, in Catalan) Opening Year's Talk, by invitation
Aula Escola Europea: "On the Big Bang and the Universe expansion" (January 19, 2017, in Catalan) By invitation
Sant Cugat-Valldoreix Astronomical Association: "The Universe had (probably) an origin: Big Bang, cosmic singularities and quantum fluctuations" (December 15, 2016, in Catalan) Closing Year's Talk, by invitation
Sant Cugat-Valldoreix Astronomical Association: "An unexpected cosmic darkness" (December 3, 2016, in Catalan) SciDrops
Cycle: Curiosity and Science Aula Magna de l'IEI, Lleida: "Albert Einstein: curiosity, intuition... and the laws of the Universe" (October 19, 2016, in Catalan) Presentation
Alexander von Humboldt Kolleg Meeting: Contribution: "New Roles and Challenges of European Research in Cosmology and Mathematical Physics" (Sep 16, 2016, in Spanish) Discussion
Sant Cugat-Valldoreix Astronomical Association: Round Table: "What do scientists actually do?" (May 26, 2016, in Catalan) Discussion
STICB Science-Religion Forum Seminar: "The Universe had an origin: the Borde-Guth-Vilenkin theorem" (May 18, 2016) Presentation
The Ray School, Dartmouth College, Hanover, NH, USA: A lesson on Gravity and the Solar System (March 21, 2016) Talk
STICB-AASCV Science-Religion Dialogs --Opening Session: Does it have any sense to believe in God? (February 16, 2016) Talk
Sant Cugat-Valldoreix Astronomical Association: Closing Talk of the Year of Light (December 11, 2015, in Catalan) Talk
Sabadell Astronomical Association: The cosmological constant and dark energy: from the Big Bang to the future of the Universe (October 7, 2015, in Catalan) Talk
Sant Cugat-Valldoreix Astronomical Association: Light as wave and particle: Albert Einstein & Max Planck (May 21, 2015, in Catalan) Talk
Sant Cugat-Valldoreix Astronomical Association: Black body radiation: from Max Planck to Stephen Hawking (March 14, 2015, in Catalan) Talk
Universitat Autònoma de Barcelona Light: wave or particle? (in Catalan, February 14, 2015) ICE News, Lecture
Sant Cugat-Valldoreix Astronomical Association: Footsteps along the path leading to the comprehension of the Universe (May 29, 2014, in Catalan) Talk
UPC BarcelonaTech, Terrassa Campus: The Universe through time (Feb 22, 2014, in Catalan) Talk
Sant Cugat-Valldoreix Astronomical Association: News of the Year: DES, eLISA, Gaia & the Higgs (Dec 12, 2013, in Catalan) Talk
Sant Cugat-Valldoreix Astronomical Association: Who is afraid of QM? (Feb 5, 2013) Talk (Mar 13, 2013) Presentation
Valldoreix-Sant Cugat Astronomical Association (May 18, 2012): Seminar
Sabadell Astronomical Association (Feb 1, 2012): Seminar
Rubi Castle, 12th Miquel Segura Research Prize Conference (in Catalan, May 26, 2011): Lecture
Primeres Jornades d’Astronomia al Montsec (in Catalan, November 20, 2010): Invited Lecture
CSIC Residence for Researchers De Galileo Galilei a la Astrofísica del Siglo XXI (in Catalan, October 29, 2009): Invited Lecture
Universitat Autònoma de Barcelona (in Catalan, January 31, 2009): Lecture
Escola d’Enginyeria Superior de Terrassa (in Catalan, November 19, 2008): Lecture
Any Sant Cebrià a Valldoreix: L’origen de l’Univers (in Catalan, October 16, 2008)
Dinning with Stars, Fabra Observatory : The origin of the Universe: before anything was there (with Xavier Pujol Gebellí, in Catalan, August 8, 2008): Dialogue
Sant Sadurni Auditorium (in Catalan, November 14, 2007): Lecture
Rubi Auditorium (in Catalan, November 15, 2006): Lecture
Cervera University (April 20, 2006): Lecture
Vilafranca Auditorium (in Catalan, November 10, 2005): Lecture