Consequences of Space-Time Discreteness on Wave Propagation
Joe Henson - BNP Paribas Asset Management London
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The 'Problem of Time' in Sum-Over-Histories Framework?
Fay Dowker - Imperial College London
Semi-Discrete Solution to the Dynamics of Loop Quantum Gravity
Jorge Pullin - Louisiana State University
Volume Operator and Recoupling Theory
Johannes Brunnemann - XRG Simulation GmbH
CACTUS as a Collaborative Tool for Discrete Quantum Gravity
David Rideout - University of California, San Diego
Coarse Graining in Loop Quantization
Jose Zapata - National Autonomous University of Mexico
Topological Quantum Field Theories Lecture 20231201
Lukas Mueller - Perimeter Institute for Theoretical Physics
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Generalized LTB spacetime and dust collapse in polymerized spherical symmetric models
Hongguang Liu - University of Erlangen-Nuremberg
Recently, models with different properties have been proposed for polymerized dust collapse and regular black holes. To fully understand their properties and differences, we provide a systematic procedure to construct effective polymerized spherically symmetric models encoding holonomy corrections…
Gyroscopes orbiting gargantuan black holes - VIRTUAL
Lisa Drummond - Massachusetts Institute of Technology (MIT)
Extreme mass-ratio binary black hole systems, known as EMRIs, are expected to radiate low-frequency gravitational waves detectable by planned space-based Laser Interferometer Space Antenna (LISA). We hope to use these systems to probe black hole spacetimes in exquisite detail and make precision…
Constraining a constant and tomographic Coupled Dark Energy model with low and high redshift probes
Lisa Goh - CEA Saclay
The current ΛCDM concordance model has been widely successful in describing our Universe. However, crucial questions, such as the H0 tension, remain unanswered and are becoming increasingly critical with the continuous release of high-precision cosmological data. This has led to the exploration of…
Monster Lie Algebra: Friend or Foe?
Maryam Khaqan - Emory University
The Monster Lie Algebra $\mathfrak m$ has two well-known avatars: It is a Borcherds' algebra that is also a quotient of the physical space of a specific tensor product of vertex algebras. In this talk, I will discuss a construction of vertex algebra elements that project to bases for subalgebras of…
Twisted Holography Mini-Course - Lecture 20231130
Davide Gaiotto - Perimeter Institute for Theoretical Physics
Why I think Double-scaled SYK at infinite Temperature is a Theory of de Sitter Space
Leonard Susskind - Stanford University
Abstract TBA --- Zoom link https://pitp.zoom.us/j/98123499206?pwd=QWlHcFBJWE8zRTlyT1A5WUVsQS9NUT09
Non-abelian symmetries can increase entanglement and induce critical dynamics
Shayan Majidy - Harvard University
Measuring the temperature of your coffee should not change the amount of coffee in your cup. This holds because the operators representing the coffee’s energy and volume commute. The intuitive assumption that conserved quantities, also known as charges, commute, underpins basic physics derivations…
Equilibrium dynamics of infinite-range quantum spin glasses in a field - VIRTUAL
Maria Tikhanovskaya - Harvard University
We determine the low-energy spectrum and Parisi replica symmetry breaking function for the spin glass phase of the quantum Ising model with infinite-range random exchange interactions and transverse and longitudinal (h) fields. We show that, for all h, the spin glass state has full replica symmetry…