1. -Fourier coefficients and small automorphic representations

Number theory seminar, Rutgers University, December 4, 2018


- The dark side of the moon: new connections in geometry, number theory and physics

Mathematics Colloquium, Yale University, November 28, 2018


  1. -Deep Learning and Renormalization

“WASP Math for AI Journal Club”, Chalmers, October 5, 2018


  1. -Degenerate Whittaker models and small automorphic representations

“N-cube week’’, nordic number theory meeting, Institut Mittag-Leffler, June 30, 2018


  1. -Degenerate Whittaker models and small automorphic representations

“Automorphic forms on reductive groups and their covers: A conference in honour of

Solomon Friedberg”, ETH Zürich, June 27, 2018


  1. -Moonshine, Music and Black Holes

Seminar at Onsala Space Observatory, May 2, 2018


  1. -Automorphic forms on Kac-Moody groups

“Exceptional Quantum Gravity”, ERC grant kick-off meeting,

Mallorca, April 13, 2018


  1. -The dark side of the moon: new connections in geometry, number theory and physics

Mathematical Sciences Colloquium, Chalmers, January 29, 2018


  1. -BPS-states and small automorphic representations

Darmstadt-Erlangen-Freiburg seminar on CFT, Freiburg, January 19, 2018


  1. -Small automorphic representations

Algebraic geometry and number theory-seminar, Chalmers, December 6, 2017


  1. -Small automorphic representations

Geometry, Algebra and Physics-seminar, Edmonton, November 8, 2017


  1. -BPS-states and automorphic representations of exceptional groups (video)

String Math, Hamburg, July 26, 2017


  1. -Moonshine and Fricke dualities in string theory

Albert Einstein Institute, Potsdam/Golm, March 28, 2017


  1. -An example of active learning in action

Pedagogical seminar on my experience with active learning in the

course MVE465 on Linear algebra and analysis, Chalmers, March 20, 2017

(The videos mentioned are openly available on my youtube channel:

https://www.youtube.com/channel/UC_YdaP6aUJG0iE3IZDw0Fmg )


  1. -Moonshine and Fricke dualities in string theory

Institute for Theoretical Physics, Teknische Universität Wien, January 19, 2017


  1. -BPS-states and small automorphic representations of exceptional groups

ENS and IPNL, Lyon, October 24, 2016


  1. -Månsken, musik och svarta hål: från Einstein till matematikens djupaste mysterier

Föreläsning vid Hulebäcksgymnasiet, Mölnlycke, October 11, 2016


  1. -From moonshine to automorphic forms and beyond (video)

Weekly colloquium at the Simons Center for Geometry and Physics,

Stony Brook, September 20, 2016


- Fourier-Whittaker coefficients attached to small automorphic representations (video)

Program on “Automorphic forms, mock modular forms and string theory”,

Simons Center for Geometry and Physics, Stony Brook, September 7, 2016


  1. -Automorphic representations, Whittaker functions and black holes (video)

Workshop on “Whittaker Functions: Number Theory, Geometry and

Black Holes”, Banff International Research Station, Canada, July 27, 2016


  1. -BPS-states and automorphic representations of exceptional groups

Seminar at the workshop on “Number theory and physics” at

Institut Henri Poincaré, Paris, May 23, 2016

(Part of the trimester program on the “Mathematics of string theory” at IHP.)


  1. -Från svarta hål till matematikens djupaste mysterier

Popular seminar at the IT High School in Gothenburg, May 4, 2016


  1. -Quantum Black Holes: Pushing the Boundaries of Physics

Docent lecture, Department of Physics, Chalmers University of Technology,

Gothenburg, March 18, 2016


  1. -Degenerate Whittaker vectors and small automorphic representations of exceptional groups

Workshop on “Eisenstein series on Kac-Moody groups and applications to physics”,

Korea Institute for Advanced Study, Seoul, November 19, 2015


  1. -Moonshine - Old and New

21st European String Workshop on “The String Theory Universe”,

KU Leuven, September 11, 2015


  1. -Fricke S-duality and BPS-state counting

LMS-EPSRC Symposium on “New Moonshines, Mock Modular Forms

and String Theory”, Durham, August 11, 2015


  1. -Mathematics of hypermultiplet moduli spaces (videos)

A series of 3 lectures given at the “String Steilkurs - Part II:

Advanced Topics in String Theory”, DESY, Hamburg, July 28-29, 2015.


  1. -Fricke S-duality and BPS-state counting

“Geometrical and Enumerative Structures in Supersymmetry”,

Special session at the AMS-EMS-SPM International Meeting, Porto, June 10, 2015


  1. -Fricke S-duality and BPS-state counting

“About Various Kinds of Interactions”, conference in honour of Philippe Spindel,

Mons University, Belgium, June 5 2015


  1. -U-duality, exotic instantons and automorphic forms on Kac-Moody groups (video)

Workshop on “(Mock) Modularity, Moonshine and String Theory”,

Perimeter Institute, Waterloo, Canada, April 14, 2015


  1. -U-duality, instanton counting and automorphic forms on Kac-Moody groups

Stanford University, April 8, 2015


  1. -Introduction to automorphic forms (notes: part 1  part 2  part 3)

A series of four lectures at the Albert Einstein Institute, Golm, March 18, 2015

(not everything in the notes above was covered during the lectures; for the precise

contents of what was covered, with neater handwriting, see these notes taken

by my student Henrik Gustafsson)


  1. -Infinite-dimensional U-duality and automorphic forms on Kac-Moody groups

Marc Henneaux’s 60th birthday conference, “Le Charme Discret de la Symétrie”,

Brussels, March 5, 2015


  1. -Från svarta hål till matematikens djupaste mysterier

Talk at the Gothenburg Astronomical Society, Slottsskogen

Observatory, February 8, 2015


  1. -Naturkrafterna och deras samspel med matematiken

Popular talk at the “Big Bang Day” (part of the “Day and Night of Astronomy” in Sweden)

at Universeum, October 18, 2014.


  1. -Månsken, musik och svarta hål (video)

My contribution to the popular science contest “Forskar-Grand Prix” at Universeum, September 26, 2014;

see this link for more information (in swedish).


  1. -Generalized Moonshine and Siegel Modular Forms

Workshop on recent developments in moonshine, Chalmers, May 30, 2014


  1. -Mathieu moonshine, Siegel modular forms and N=4 dyons

Seminar at IST Lisbon, May 12, 2014


  1. -Generalized Mathieu Moonshine and Siegel Modular Forms (video)

Seminar at the workshop “Mock Modular Forms and Physics” at the Institute of

Mathematical Sciences, Chennai, India, April 18, 2014


  1. -Second Quantization of Mathieu Moonshine

Seminar at the workshop “Southeastern Regional Mathematical String Theory

Meeting”, University of North Carolina, April 4, 2014


  1. -Second Quantization of Mathieu Moonshine

Seminar at CERN, February 11, 2014


  1. -Hypermultiplets, D-instantons and wall-crossing

Seminar at the Albert Einstein Institute, Golm/Potsdam, December 16, 2013


  1. -BPS-states and automorphic representations

Seminar at the Department of Mathematical Sciences, Chalmers, December 4, 2013


  1. -Mighty Moonshine Mysteries

Seminar at ULB/VUB, Brussels, October 16, 2013


  1. -Fun with U-duality

Journal Club on the paper “Small Representations, String Instantons and Fourier Modes

of Eisenstein Series” (arXiv:1111.2983) by Green, Miller, Vanhove.

Department of Fundamental Physics, Chalmers, October 11, 2013


  1. -BPS-States and Automorphic Representations (video)

Joint math/physics seminar at Rutgers, September 17, 2013


  1. -Superconformal Field Theories and New Moonshine Phenomena

Laboratoire Charles Coulomb, Montpellier, May 27, 2013


  1. -From Ramanujan to Hawking, and Beyond: Unraveling the Mysteries of Black Holes

Popular lecture “Hot Topics in Physics and Astronomy”, Chalmers, May 6, 2013


  1. -Lectures on mathematical aspects of hypermultiplets and NS5-branes in string theory

A series of 6 lectures given at the mini-workshop on “Hypers” at the Department

Mathematics, Hamburg University, March 26 - 28, 2013


  1. -Generalised Moonshine, K3-Surfaces and Jacobi Forms - Part II (appendix)

Lecture at the Department of Mathematical Sciences, Chalmers, January 17, 2013


  1. -Generalised Moonshine, K3-Surfaces and Jacobi Forms - Part I (appendix)

Lecture at the Department of Mathematical Sciences, Chalmers, December 20, 2012


  1. -Quantum Black Holes and Ramanujan’s Last Letter to Hardy

Popular talk “Lunch Bunch”, Chalmers, Gothenburg, November 23, 2012


  1. -Generalised Moonshine in the elliptic genus of K3

Workshop on “Algebra, Geometry and the Physics of BPS-States”,

Hausdorff Research Institute for Mathematics, Bonn, November 12, 2012


  1. -Wall-crossing and the QK/HK correspondence (video of the talk)

Workshop on hyperkähler geometry, Simons Center for Geometry and Physics,

Stony Brook, October 31, 2012


  1. -Generalised Moonshine in the elliptic genus of K3

Rencontres théoriciennes, Institut Henri Poincaré, Paris, October 11, 2012


  1. -Recent developments in moonshine

Journal Club on Mathieu Moonshine, Chalmers, October 1, 2012


  1. -Generalised Mathieu Moonshine and Holomorphic Orbifolds

Workshop on Black Holes in Supergravity and M/Superstring Theory.

Albert Einstein Institute, Potsdam/Golm, September 10, 2012


  1. -Generalised Mathieu Moonshine and Holomorphic Orbifolds

41st International Ahrenshoop Symposium: “Recent Developments in

String and Field Theory”, Akademie Berlin-Schmöckwitz, August 27, 2012


  1. -Wall-crossing, Rogers dilogarithm and the QK/HK correspondence

String Math 2012, Hausdorff Institute of Mathematics, Bonn, July 18, 2012


  1. -Hyperholomorphic bundles, wall-crossing and dilogarithm identities

Mathematical Physics and Developments in Algebra, Thematic Satellite

Session at the 6th European Congress of Mathematics,

Krakow, July 4, 2012 (Day of the Higgs!)


- Instanton partition functions and automorphic representations

Albert Einstein Institute, Potsdam, May 22, 2012


  1. -Crossing the wall: from geometry and number theory to physics

Colloquium at the Department of Mathematical Sciences, Chalmers, Gothenburg, April 23, 2012


  1. -Hyperholomorphic wall-crossing and geometric quantization of cluster varieties

Workshop on “Integrability in Topological Field Theory”,

Hausdorff Research Institute for Mathematics, Bonn, April 17, 2012


  1. -Wall-crossing, dilogarithm identities and the QK/HK correspondence (video of the talk)

Workshop on “Mathematical Aspects of String and M-theory”,

Isaac Newton Institute, Cambridge, January 11, 2012


  1. -BPS-states and automorphic representations (blackboard)

Workshop on “Automorphic Forms in String Theory”,

Karlstad, November 17, 2011.


  1. -S-duality, NS5-branes and wall crossing

DESY Hamburg, April 21, 2011


  1. -NS5-brane instantons, topological wave functions and wall crossing

University of Amsterdam, April 5, 2011


  1. -The NS5-brane partition function revisited

Chalmers University of Technology, Gothenburg, November 18, 2010


  1. -Rigid Calabi-Yau 3-folds, automorphic forms and instantons

Workshop on “Algebra, Geometry and Mathematical Physics”,

Tjärnö Marine Biological Laboratory, Sweden, October 28, 2010


  1. -Fivebrane instantons and hypermultiplets

Workshop on “Advances in string theory, wall crossing and quaternion-Kähler geometry”,

Institut Henri Poincaré, Paris, September 3, 2010


  1. -Hypermultiplets, instantons and automorphic forms

Solvay workshop on “Symmetries and Dualities in Gravitational Theories”, Brussels, May 20, 2010


  1. -Hypermultiplets, instantons and automorphic forms

“GeNeZiSS meeting”, University of Geneva, April 23, 2010


  1. -Automorphic forms and instantons in string theory

“MP2 workshop”, Chalmers University of Technology/Göteborg University,

Gothenburg, October 23, 2010


  1. -Platonic Solids, Regular Tilings and Hyperbolic Coxeter Groups

Popular science talk, Chalmers University of Technology, Gothenburg, September 28, 2009


  1. -Arithmetic and Hyperbolic Structures in String Theory

Doctoral thesis presentation, Chalmers University of Technology, Gothenburg, June 17, 2009


  1. -Arithmetic and Hyperbolic Structures in String Theory

Doctoral thesis presentation, Université Libre de Bruxelles, Brussels, June 12, 2009


  1. -Instanton Corrections to the Universal Hypermultiplet and Automorphic Forms

“23rd Nordic Network Meeting on Strings, Fields and Branes”, Copenhagen, April 17, 2009


  1. -Partition functions for three-dimensional gravity (blackboard talk)

Lecture given at the working group on “3D gravity theories and the Kerr/CFT correspondence”,

CERN winter school, February, 2009


  1. -Chaotic Cosmology, Cohomology and Coxeter Groups

LPTHE Jussieu, Paris, December 8, 2008


  1. -Compactification of Higher Derivative Corrections and Automorphic Forms

École Normale Supérieure, Paris, November 19, 2008


  1. -Compactification of Higher Derivative Corrections and Automorphic Forms

ETH Zürich, November 5, 2008


- Compactification of Higher Derivative Corrections and Automorphic Forms

KUL Leuven, October 29, 2008


  1. -Compactification of Higher Derivative Corrections and Automorphic Forms

Cambridge University, October 23, 2008


  1. -Compactification of Higher Derivative Corrections and Automorphic Forms

Chalmers University of Technology, Gothenburg, October 15, 2008


  1. -Chaos, Cohomology and Coxeter Groups

University of Reykjavik, May 29, 2008


  1. -Cosmological Billiards and Hidden Symmetries of Gravity

Popular science lecture at Université Catholique de Louvain, Louvain-La-Neuve, Belgium, May 16, 2008


  1. -Lectures on Kac-Moody algebras with applications in (super-)gravity,

“The third international Modave summer school on Mathematical Physics”, Modave, Belgium, August, 2007


  1. -Chaos, Compactification and Coxeter Groups

Cambridge University, May 18, 2007


  1. -Chaos, Compactification and Coxeter Groups

Université Libre de Bruxelles, Brussels, May 2007


  1. -Geometric Configurations and M-Theory Cosmology from E10

Chalmers University of Technology, Gothenburg, January 2007

Welcome to my seminar page. Below follows a list of recent (and not so recent) seminars I have given, both technical and more popular science oriented. Click on

the links to see pdf-versions of the slides, or videos (when available).

Daniel Persson

Associate Professor

Division of Algebra and Geometry

Department of Mathematical Sciences

Chalmers University of Technology