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Quantum Geometry Phenomenology: A Discrete Machian Model
Seth Major - Hamilton College
Entropy and Entanglement for LQG Black Holes
Daniel Terno - Macquarie University
Black Hole Geometrodynamics Revisited
Viqar Husain - University of New Brunswick
Phase Space Quantization of 2+1 Gravity In Chern-Simons Formulation
Catherine Meusburger - University of Erlangen-Nuremberg
Symmetry and Particles in 3D Quantum Gravity
Laurent Freidel - Perimeter Institute for Theoretical Physics
Status of the Master Constraint Programme
Bianca Dittrich - Perimeter Institute for Theoretical Physics
Feynmann Propagator in Spin Foam Quantum Gravity: Causality Without Time
Daniele Oriti - Complutense University of Madrid
Consequences of Space-Time Discreteness on Wave Propagation
Joe Henson - BNP Paribas Asset Management London
The 'Problem of Time' in Sum-Over-Histories Framework?
Fay Dowker - Imperial College London
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…