Talks

97 - 108 of 15838 Results

Cosmology Lecture

Kendrick Smith Perimeter Institute for Theoretical Physics

March 25, 2024
PIRSA:24030070

Cosmology
Particle Physics Lecture

Junwu Huang Perimeter Institute for Theoretical Physics

March 25, 2024
PIRSA:24030026

Particle Physics
QFT III Lecture

Mykola Semenyakin Perimeter Institute for Theoretical Physics

March 25, 2024
PIRSA:24030038

Quantum Fields and Strings
Quantum Information Lecture

Eduardo Martin-Martinez Institute for Quantum Computing (IQC)

March 25, 2024
PIRSA:24030061

Quantum Information
Particle Physics Lecture

Junwu Huang Perimeter Institute for Theoretical Physics

March 22, 2024
PIRSA:24030025

Particle Physics
Bosonization and anomalies of 3d fermionic topological orders

Arun Debray Purdue University

March 22, 2024
PIRSA:24030079

Condensed Matter
QFT III Lecture

Mykola Semenyakin Perimeter Institute for Theoretical Physics

March 22, 2024
PIRSA:24030037

Quantum Fields and Strings
Once extended unitary topological field theories

Luuk Stehouwer Max Planck Institute for Mathematics

March 22, 2024
PIRSA:24030093

Condensed Matter
Quantum Information Lecture

Eduardo Martin-Martinez Institute for Quantum Computing (IQC)

March 22, 2024
PIRSA:24030060

Quantum Information
Quantum Field Theory for Cosmology - Lecture 20240321

Achim Kempf University of Waterloo

March 21, 2024
PIRSA:24030013

Mathematical physics
Quantum homotopy groups

Theo Johnson-Freyd Dalhousie University

March 21, 2024
PIRSA:24030091

Condensed Matter
Cosmology Lecture

Kendrick Smith Perimeter Institute for Theoretical Physics

March 21, 2024
PIRSA:24030068

Cosmology

Cosmology Lecture

Kendrick Smith Perimeter Institute for Theoretical Physics

March 25, 2024
PIRSA:24030070

Cosmology
Particle Physics Lecture

Junwu Huang Perimeter Institute for Theoretical Physics

March 25, 2024
PIRSA:24030026

Particle Physics
QFT III Lecture

Mykola Semenyakin Perimeter Institute for Theoretical Physics

March 25, 2024
PIRSA:24030038

Quantum Fields and Strings
Quantum Information Lecture

Eduardo Martin-Martinez Institute for Quantum Computing (IQC)

March 25, 2024
PIRSA:24030061

Quantum Information
Particle Physics Lecture

Junwu Huang Perimeter Institute for Theoretical Physics

March 22, 2024
PIRSA:24030025

Particle Physics
Bosonization and anomalies of 3d fermionic topological orders

Arun Debray Purdue University

March 22, 2024
PIRSA:24030079

Condensed Matter

here are two notions of a symmetry of a group G on a 3d topological order (TO): an "algebraic" symmetry, where G acts by automorphisms on the tensor category defining the (TO), and a "field-theoretic" symmetry, where the TFT corresponding to the TO is extended to manifolds with a principal G-bundle. The "field-theoretic" notion is stronger than the "algebraic" one, and the obstruction is sometimes referred to as the anomaly of the TO. The goal of this talk is to discuss a project joint with Weicheng Ye and Matthew Yu on computing these anomalies for fermionic TOs/spin TFTs: we develop a general framework employing Gaiotto-Kapustin's bosonic shadow construction. I will discuss both the mathematical conjectures our framework rests on as well as its use in examples. The Smith long exact sequence appears in our computations.
QFT III Lecture

Mykola Semenyakin Perimeter Institute for Theoretical Physics

March 22, 2024
PIRSA:24030037

Quantum Fields and Strings
Once extended unitary topological field theories

Luuk Stehouwer Max Planck Institute for Mathematics

March 22, 2024
PIRSA:24030093

Condensed Matter

Motivated by the dagger category of Hilbert spaces, we explore the mathematical axiomatization of unitary topological field theory (TFT) using dagger categories. Recent advancements have elucidated the structure of higher dagger categories, paving the way for a precise definition of extended unitary TFTs. I will present an explicit formulation of once extended TFTs utilizing various versions of dagger bicategories. This framework enables a complete classification of unitary extended two-dimensional TFTs with arbitrary symmetry groups in terms of their unitary 2-representations. This is joint work in progress with Lukas Muller.
Quantum Information Lecture

Eduardo Martin-Martinez Institute for Quantum Computing (IQC)

March 22, 2024
PIRSA:24030060

Quantum Information
Quantum Field Theory for Cosmology - Lecture 20240321

Achim Kempf University of Waterloo

March 21, 2024
PIRSA:24030013

Mathematical physics
Quantum homotopy groups

Theo Johnson-Freyd Dalhousie University

March 21, 2024
PIRSA:24030091

Condensed Matter

An *open-closed tqft* is a tqft with a choice of boundary condition. Example: the sigma model for a sufficiently finite space, with its Neumann boundary. Slogan: every open-closed tqft is (sigma model, Neumann boundary) for some “quantum space”. In this talk, I will construct homotopy groups for every such “quantum space” (and recover usual homotopy groups). More precisely, these “groups” are Hopf in some category. Given a “quantum fibre bundle” (a relative open-closed tqft), I will construct a Puppe long exact sequence. Retracts in 3-categories and a higher Beck-Chevalley condition will make appearances. This project is joint work in progress with David Reutter.
Cosmology Lecture

Kendrick Smith Perimeter Institute for Theoretical Physics

March 21, 2024
PIRSA:24030068

Cosmology

Title	Speaker(s)	Date	Collection	Type	Info
Cosmology Lecture	Kendrick Smith	2024‑03‑25	Cosmology 2023/24	Course	View details
Particle Physics Lecture	Junwu Huang	2024‑03‑25	Particle Physics	Course	View details
QFT III Lecture	Mykola Semenyakin	2024‑03‑25	QFT III 2023/24	Course	View details
Quantum Information Lecture	Eduardo Martin-Martinez	2024‑03‑25	Quantum Information 2023/24	Course	View details
Particle Physics Lecture	Junwu Huang	2024‑03‑22	Particle Physics	Course	View details
Bosonization and anomalies of 3d fermionic topological orders	Arun Debray	2024‑03‑22	Higher Categorical Tools for Quantum Phases of Matter	Conference	View details
QFT III Lecture	Mykola Semenyakin	2024‑03‑22	QFT III 2023/24	Course	View details
Once extended unitary topological field theories	Luuk Stehouwer	2024‑03‑22	Higher Categorical Tools for Quantum Phases of Matter	Conference	View details
Quantum Information Lecture	Eduardo Martin-Martinez	2024‑03‑22	Quantum Information 2023/24	Course	View details
Quantum Field Theory for Cosmology - Lecture 20240321	Achim Kempf	2024‑03‑21	Quantum Field Theory for Cosmology (PHYS785/AMATH872)	Course	View details
Quantum homotopy groups	Theo Johnson-Freyd	2024‑03‑21	Higher Categorical Tools for Quantum Phases of Matter	Conference	View details
Cosmology Lecture	Kendrick Smith	2024‑03‑21	Cosmology 2023/24	Course	View details

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