# Mathematical Picture Language Project Seminar

This academic year, a seminar series in mathematical physics will be held in Jefferson 356 on Tuesdays at 4:00 p.m. Arthur Jaffe and Zhengwei Liu commenced the series with a talk introducing the Mathematical Picture Language Project on September 5th.

**2017-2018 Mathematical Physics Seminars**

**Jefferson 356, 4:00 p.m.**

**Tuesday, April 10 2018** **Zhiwei Yun**, MIT

"Hitchin moduli spaces in automorphic representation theory"

**Tuesday, April 3 2018** **Marcel Bischoff,** Ohio University

"Quantum Symmetries and Conformal Nets"

**Tuesday, March 27 2018** **Feng Xu**, UC Riverside

"On questions around the reconstruction program"

**Friday March 23 2018** **Wei Zhang**, MIT

Special day and time: 3:00 p.m. Jefferson 250

"Superpositivity of L-functions and 'completion of square'"

**Tuesday, March 20 2018** **Jürg Fröhlich**, ETH Zurich

"Physics in 2D – from the Kosterlitz-Thouless Transition to Topological Insulators"

**Tuesday, February 27 2018** **Hans Wenzl**, UC San Diego

"Coideal Algebras and Subfactors"

**Friday February 23 2018** **Xinqi Gong**, Renin University in China

Special day and time: 3:00 p.m. Jefferson 250

"Mathematical Intelligence Applications in Bio-medical Problems"

**Tuesday, February 13 2018 Nicholas Early**, University of Minnesota

"Canonical bases for permutohedral plates"

**Friday, February 9 2018 Boqing Xue**, Chinese Academy of Sciences

Special day and time: 10:00 a.m. Jefferson 453

"A basic introduction to the Riemann hypothesis"

**Tuesday, February 6 2018** **Jacob Shapiro**, ETH Zurich

"Bulk-Edge Duality and Complete Localization for Disordered Chiral Chains"

**Friday, February 2 2018 Yunxiang Ren**, Tennessee State University

Special day and time: 4:00 p.m. Jefferson 250

"A new skein theory for One-Way Yang-Baxter planar algebras"

**Tuesday, January 30 2018** **Kaifeng Bu**, Harvard University and Zhejiang University

"de Finetti Theorems for Braiding Parafermions"

**Tuesday, January 23 2018** **Bin Gui**, Vanderbilt University

"A unitary tensor product theory for unitary vertex operator algebra modules"

**Tuesday, January 16 2018** **Marco de Renzi**, University of Paris 7

"Renormalized Hennings Invariants and TQFTs"

**Tuesday, November 14 2017** **Dennis Gaitsgory**, Harvard University

"Higher representation theory"

**Tuesday, November 7 2017** **Liming Ge**, UNH and Chinese Academy of Science

"From Riemann and Hilbert to Kadison-Singer"

**Tuesday, October 31 2017** **Zhenghan Wang**, Microsoft Station Q

"Reconstructing chiral CFTs/VOAs from 2D TQFTs/MTCs"

**Tuesday, October 24 2017** No Seminar

**Tuesday, October 17 2017** No Seminar

**Thursday, October 12 2017** **Yasu Kawahigashi**, University of Tokyo

Special day and time: 2:00 p.m. Jefferson 453

“From vertex operator algebras to operator algebras and back”

**Tuesday, October 10 2017 Michael Hopkins**, Harvard University

"Reflection Positivity and Invertible Topological Phases"

**Tuesday, October 3 2017** **Alina Vdovina**, Newcastle University, UK

“Buildings, surfaces and quaternions”

Tuesday, September 26 Jinsong Wu, Harvard University

“The Brascamp-Lieb Inequalities for Planar Algebras”

**Tuesday, September 19 2017**

No Seminar, Brian Greene Public Lecture

**Tuesday, September 12 2017** **William Norledge**, Harvard University

“A Construction of Lattices in Buildings”

**Tuesday, September 5 2017** **Arthur Jaffe and Zhengwei Liu**, Harvard University

This spring semester, **starting February 5, 2019,** seminars will generally be held in Jefferson 356 on Tuesdays at 3:00 p.m. This past fall semester, starting September 4, 2018, seminars were generally in Jefferson 356 on Tuesdays at 4:00 p.m.

Exceptions are noted.**Tuesday, April 30 2019 Shawn Cui,** Virginia Tech

"Four Dimensional Topological Quantum Field Theories from G-crossed Braided Categories"**Tuesday, April 23 2019 Yi-Hong Zhang, **Tsinghua University

"Quantum many-body computation on a small quantum computer" **Tuesday, April 16 2019 Emil Prodan, **Yeshiva University

"Pushing index theorems into the Sobolev" **Tuesday, April 9 2019 Claus Koestler,** University College Cork

"Markovianity as a distribution symmetry"**Special Extra Seminar, ****Tuesday, April 9 2019 ****4:30PM**** Alina Vdovina,** Newcastle University

"Higher dimensional picture languages"**Tuesday, April 2 2019 Mikael Rordam and Magdalena Elena Musat, **University of Copenhagen* 3PM* : Mikael Roradam, "Highlights of the classification of simple nuclear C*-algebras"

**Magdalena Elena Musat, "Quantum correlations, factorizable channels, and the Connes Embedding Problem"**

*4PM:***Tuesday, March 26 2019 Jinsong Wu,**Harbin Institute of Technology

"Fourier Analysis on Fusion Rings"

**Tuesday, March 12 2019 Youwei Zhao,**University of Science and Technology of China

"A review of the surface code from an experimental perspective"

**Tuesday, March 5 2019 Kaifeng Bu, **Harvard and Zhejiang University

"Efficient classical simulation of Clifford circuits with nonstabilizer input states"

**Tuesday, February 26 2019 Fei Wei,** Harvard

"Entropy of arithmetic functions and arithmetic compactifications"

**Tuesday, February 12 2019 Liang Kong, **Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology

"A unified mathematical theory of gapped and gapless boundaries of 2d topological orders"

**Tuesday, February 5 2019 Zhengwei Liu, **Harvard

"Quantum Error Correcting Codes"

**Tuesday, November 13 2018 William Norledge **Pennsylvania State University

"The adjoint braid arrangement as a free Lie algebra in species via the Steinmann relations"

**Friday, November 9 2018 Xun Gao **Harvard University and Max Planck Institute for Quantum Optics**Special Day, Special Time: Now on**** **Friday 3:30PM, Jefferson 256

"Pictorial language in quantum computation"

**Tuesday, October 30 2018 Chunlan Jiang **Hebei Normal University

"Similarity Invariants of Geometric Operators"

**Tuesday, October 23 2018 Shamil Shakirov** Harvard University

"Rational integrable systems associated with higher genus surfaces"

**Tuesday, October 16 2018 Christoph Gorgulla**, Harvard Medical School

"A quantum mechanical free energy method based on Feynman's path integral formulation"

**Tuesday, October 9 2018 Jean-Bernard Zuber**, Sorbonne Université

"ADE and all that, 30 years after"

**Friday, October 5 2018 Semyon Dyatlov**, University of California, Berkeley and MIT**Special Day, Extra Seminar:**** **Friday 4:30PM**Special Location: **Jefferson 453

"Fractal uncertainty principle and quantum chaos"

**Tuesday, October 2 2018** **Victor Kac**, MIT**Special Time:** 5:00 PM

"Multiplicative Poisson vertex algebras and differential-difference Hamiltonian equations"

**Tuesday, September 25 2018** **Pavel Etingof**, MIT

"New symmetric tensor categories in positive characteristic"

**Tuesday, September 18 2018** **Liming Ge**, UNH and Chinese Academy of Sciences

"On Multiplicative Fourier Transform"

**Friday, September 14 2018 Zhengwei Liu, **Harvard**Special Time and Location:** Infinite Dimensional Analysis Seminar.

Friday, September 14 at 3pm in MIT Room 2-136

"Quantum Fourier Analysis"

**Tuesday September 11 2018 and Wednesday September 12**: The regular seminar will be replaced by the 2018 Ahlfors Lectures on machine learning by **Sanjeev Arora**.

**Friday, September 7, 2018** **Zhengwei Liu, **Harvard**Special Time and Location:** Tufts University Mathematics Colloquium.

Friday, September 7 at 4pm. Tea at 3:30pm Bromfield-Pearson 101

Quantum Fourier Analysis

**Tuesday, September 4 2018 Bohan Fang**, Peking University

"Mirror symmetry for the toric Calabi-Yau 3-folds"

**From March 31, 2020, unless noted otherwise, the seminar will be held at 10:00 US Eastern Daylight Time. This is 16:00 Central European Daylight Time or 22:00 in ChinaThe link to all seminars from September 29, 2020 forward is **

**Zoom Link for Seminars**

Most of the seminars can be viewed on the Mathematical Picture Language Youtube Channel

Most of the seminars can be viewed on the Mathematical Picture Language Youtube Channel

**Online:** **Tuesday, November 11, 2020 Sergei Gukov**, California Institute of Technology

"Learning to Unknot"

**Online:** **Tuesday, November 4, 2020 Liang Kong**, SUSTech (South China University of Science and Technology)

TBA

**Online:** **Tuesday, October 27, 2020 Sebastien Palcoux**, Tsinghua University

"The quest of a finite, purely-quantum group"

**Online:** **Tuesday, October 20, 2020 Joost Slingerland**, National University of Ireland, Maynooth

TBA

**Online:** **Tuesday, October 13, 2020 Xun Gao**, Harvard University

"Evaluating quantum circuits and exactly solvable models by untying knots"

**Online:** **Tuesday, October 6, 2020 Zhenghan Wang**, Microsoft Station Q and UCSB

"Reconstructing CFTs from MTCs"

**Online:** **Tuesday, September 29, 2020 David Evans**, University of Cardiff

"K-theory of Operator Algebras, Orbifolds and Conformal Field Theory"

**Online:** **Tuesday, September 22, 2020 Yunxiang Ren**, Harvard University

"Triangular Prism Equations and Categorification"

**Online:** **Tuesday, September 15, 2020 Avi Wigderson**, Institute for Advanced Study Slides Powerpoint Video

"Optimization, Complexity, and Math"

**Online:** **Tuesday, September 8, 2020 Nilanjana Datta**, Cambridge University Slides Video

"Discriminating Between Unitary Quantum Processes"

**Online:** **Tuesday, September 1, 2020 Jinsong Wu**, Harbin Institute of Technology Slides Video

"Some Inequalities in Locally Compact Quantum Groups"

**Online:** **Tuesday, August 25, 2020 No Seminar**

**Online:** **Tuesday, August 18, 2020 Laurent Pascal Saloff-Coste**, Cornell University Slides Video

"Is any compact Lie group uniformly doubling?"

**Online:** **Tuesday, August 11, 2020 Marianne Leitner, **Dublin Institute for Advanced Studies (joint seminar with DIAS) Slides Video

"Integrability, Rationality and Convolutions"

**Online:** **Tuesday, August 4, 2020 Gilles Pisier**, Texas A&M University and Sorbonne Université Slides Video

"A Non-nuclear C*-algebra with the Weak Expectation Property and the Local Lifting Property”

**Online:** **Tuesday, July 28, 2020 David Gross**, University of Cologne Slides Video

"The Representation Theory of the Clifford Group, with Applications in Quantum Information"

**Online:** **Tuesday, July 21, 2020 Vaughan Jones**, Vanderbilt University Slides Video

"Applied von Neumann Algebra"

**Online:** **Tuesday, July 14, 2020 Paul Fendley**, All Souls College, Oxford University Slides Video

"Integrability and Braided Tensor Categories"

**Online:** **Tuesday, July 7, 2020 Marius Junge**, University of Illinois at Urbana-Champaign Slides Video

"Decay Estimates and Complete Bakry-Emry Theory"

**Online:** **Tuesday, June 30, 2020 Robert Raussendorf**, University of British Columbia Slides Video

"A Hidden Variable Model for Universal Quantum Computation With Magic States on Qubits"

**Online:** **Tuesday, June 23, 2020 Zhengwei Liu**, Tsinghua University (visiting Harvard) Slides Video

"Quantum Fourier Analysis"

**Online:** **Tuesday, June 16, 2020 Matthew Hastings**, Microsoft Station Q and Redmond Slides Video

"The Power of Adiabatic Quantum Computation with no Sign Problem"

**Online:** **Tuesday, June 9, 2020 Elizabeth Crosson**, University of New Mexico Slides Video

"The Sign Problem and its Relation to the Spectral Gap of Quantum Many-Body Systems"

**Online:** **Tuesday, June 2, 2020 Shawn Cui**, Purdue University Slides Video

"Kitaev's Finite Group Model as an Error Correcting Code"

**Online:** **Tuesday, May 26, 2020 Scott Aaronson**, University of Texas Video

"From Archimedes to Quantum Supremacy"

**Online:** **Tuesday, May 19, 2020 Alina Vdovina**, University of Newcastle Slides Video

"Buildings, C*-Algebras and New Higher-Dimensional Analogues of the Thompson Groups"

**Online: ****Tuesday, May 12, 2020** **Werner Nahm**, Dublin Institute for Advanced Study Slides Video

"Euclidean Quantum Field Theory: Axioms and Automorphic Forms"

**Online: ****Tuesday, May 5, 2020** **Roberto Longo**, University of Rome Tor Vergata Slides Video

"The Information in a Wave"

**Postponed: Tuesday, April 28, 2020 David Ruelle**, IHES (France)

"A Theory of Hydrodynamic Turbulence Based on Non-Equilibrium Statistical Mechanics"

**Online: Tuesday, April 28 2020 Daniel Gottesman,** Perimeter Institute Slides Video

"Graphical Proofs for Fault-Tolerant Quantum Computation"

**Online:** **Tuesday, April 21, 2020** **Jürg Fröhlich**, ETH Zürich Slides Video

"Kochen, Specker, Bell, and Others"

**Postponed: Tuesday, April 21, 2020 Zhenghan Wang**, Microsoft Station Q and UCSB

"Ground-States of Topological Phases of Matter as Error Correction Codes"

**Online: Tuesday, April 14 2020 Thomas Spencer,** Institute for Advanced Study, Princeton Slides Video

"Evolution of NLS with Bounded Data"

**Online: Tuesday, April 7, 2020 Leonard Gross**, Cornell Univesity Slides Video

"Equivalence of Helicity and Euclidean Self-Duality for Gauge Fields"

**Online: Tuesday, March 31 2020 Ian Jauslin**, Princeton University Slides Video

"Liquid crystals and the Heilmann-Lieb model"

**Online: Tuesday, March 24 2020 Edward Farhi,** Google and MIT

"QAOA: Landscape Independence and the Sherrington-Kirkpatrick Model"

Zoom (video presentation) at https://harvard.zoom.us/j/881015355

**Tuesday, March 10 2020 Sergei Bravyi,** IBM

"Variational Quantum Algorithms: Obstacles and Opportunities"**Special time:** 3 pm

**Thursday, March 5 2020 James Glimm,** SUNY at Stony Brook

"A Maximum Entropy Rate Principle and Other Turbulence Related Results and Speculations"**Special day and time:** Thursday, 4:30 pm

**Tuesday, March 3 2020 Weihua Liu,** University of Arizona

“On quantum distributional symmetries for *-random variables”

**Thursday, February 27 2020 Nilin Abrahamsen,** MIT**Special day and time:** Thursday, 11:00 am**Special location:** Lyman 338

"Classical Algorithm for Ground States of Spin Trees"

**Tuesday, February 25 2020 You Zhou,** Harvard

"Constructing Multipartite Bell Inequalities from Stabilizers"

**Tuesday, February 18 2020 Linghang Kong,** MIT**Special time:** 3 pm

"Separation of Out-of-time-ordered Correlation and Entanglement"

**Tuesday, February 11 2020 Dominik Wild**, Harvard

"Quantum Algorithms for Classical Sampling Problems"

**Tuesday, February 4 2020 Zhengwei Liu, **Tsinghua University

"Quantized Graphs and Quantum Error Correction"

**Tuesday, January 28 2020 Aram Harrow,** MIT

"Phase Transitions in the Complexity of Simulating Random Shallow Quantum Circuits"

**Tuesday, January 7 2020 Jin-Long Huang,** University of California San Diego

"Exotic 3D Topologically Ordered States"

**Tuesday, December 3 2019 Christopher King,** Northeastern University

"Contractive Bounds for Quantum Markov Semigroups"

**Thursday, November 7 2019 Leo Zhou**, Harvard**Special day and time:** Thursday, 11 am**Special location:** Lyman 338

"Symmetry-Protected Dissipative Preparation of Matrix Product States"

**Tuesday, November 12 2019** **Yichen Huang**, MIT

"Renyi Entanglement Entropy in Quantum Many-Body Systems"

**Thursday, October 24 2019** **Chunlan Jiang,** Heibei Normal University**Special day:** Thursday**Special location:** Lyman 338

"Some Progress on the Problem of Invariant Subspaces"

**Tuesday, October 22 2019** **Juven Wang**, Harvard University

"Quantum 4d Yang-Mills Theories and Time-Reversal Symmetric 5d Higher-Gauge TQFT"