Spectral Density of the Causal Propagator
Yasaman Kouchekzadeh Yazdi - Dublin Institute For Advanced Studies
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Categorical Spectra with Adjoints
Naruki Masuda - Northwestern University
No-Go Theorems in Modal Quantum Theory
Ben Schumacher - Kenyon College
Physics-Informed AI, AI for Physics: From Precision Cosmology to Accelerated Discovery
Biwei Dai - University of California, Berkeley
Lecture - Non-local quantum computation mini-course
Alex May - Perimeter Institute for Theoretical Physics
An algebra of proper observables at null infinity: Dirac brackets, Memory and Goldstone probes
Rodrigo Andrade E Silva - Perimeter Institute for Theoretical Physics
Lessons learned from GW250114: a loud signal with no Love
Giada Santoro - University of Copenhagen
Lecture - Non-local quantum computation mini course
Alex May - Perimeter Institute for Theoretical Physics
Entanglement Branes, Modular Flow, and Extended TQFT
Gabriel Wong - Harvard University
In gauge theories, there is an inherent tension between locality and gauge invariance. This is precisely expressed by the failure to factorize the physical Hilbert space into local tensor products. The extended Hilbert space offers a resolution to this problem by embedding physical states into a…
Numerical Simulation of the Axion Field through the QCD Phase Transition
Malte Buschmann - University of Michigan–Ann Arbor
We perform a full (3+1)-dimensional numerical simulation of the axion field around the QCD epoch. Our aim is to fully resolve large dynamical non-linear effects in the inhomogenous axion field. These effects are important as they lead to large overdensities in the field at late times. Those…
PSI 2018/2019 - Statistical Mechanics - Lecture 9
Pedro Vieira - Perimeter Institute for Theoretical Physics
Correlations in the XY model at low temperature, importance of vortices in the XY model
PSI 2018/2019 - Quantum Field Theory I - Lecture 9
Gang Xu - Perimeter Institute for Theoretical Physics
Lagrangians for Spinors
Unification of integrability in supersymmetric gauge theories
Junya Yagi - Perimeter Institute for Theoretical Physics
The 8-vertex model and the XYZ spin chain have been found to emerge from gauge theories in various ways, such as 4d and 2d Nekrasov-Shatashvili correspondences, the action of surface operators on the supersymmetric indices of class-Sk theories, and correlators of line operators in 4d Chern-Simons…
Positive geometries and the amplituhedron
Thomas Lam - University of Michigan–Ann Arbor
Positive geometries are real semialgebraic spaces that are equipped with a meromorphic ``canonical form" whose residues reflect the boundary structure of the space. Familiar examples include polytopes and the positive parts of toric varieties. A central, but conjectural, example is the amplituhedron…
PSI 2018/2019 - Statistical Mechanics - Lecture 8
Pedro Vieira - Perimeter Institute for Theoretical Physics
Eigenstate thermalization hypothesis, XY model in the high-temperature and low-temperature limits
PSI 2018/2019 - Quantum Field Theory I - Lecture 8
Gang Xu - Perimeter Institute for Theoretical Physics
Spinors as Representations of the Lorentz Group
PSI 2018/2019 - Statistical Mechanics - Lecture 7
Pedro Vieira - Perimeter Institute for Theoretical Physics
Mermin-Wagner theorem, Goldstone's theorem, quantum thermalization and eigenstate thermalization hypothesis using Mathematica ( Pedro's Notebook)
PSI 2018/2019 - Quantum Field Theory I - Lecture 7
Dan Wohns - Perimeter Institute for Theoretical Physics
Beyond Tree Level
A Song of Ice and Fire --- Dynamics of Planets Hot and Cold
Gongjie Li - Georgia Institute of Technology
The unexpected diversity of planetary systems has posed challenges to our classical understanding of planetary formation. For instance, Jupiter sized planets have been detected with short orbital periods of a few days in misaligned orbits with respect to the spin-axis of their host stars. I will…