Decoding the fundamental laws of gravity
Georgi Dvali - New York University (NYU)
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Inflation: What Now?
PIRSA:06110047
Bayesian Analysis of WMAP3 Data
PIRSA:06110060
Reionization of the Universe: Character and Observable Signatures
Ilian Iliev - University of Toronto
PIRSA:06110059
Cosmic Rays and Cluster Cosmology - A Critical Review
Christoph Pfrommer - Universität Heidelberg - Institut für Theoretische Physik
PIRSA:06110050
Cuscuton: Dark Energy meets Modified Gravity
Ghazal Geshnizjani - Perimeter Institute for Theoretical Physics
PIRSA:06110056
Modified Gravity as an Alternative to Dark Energy
Richard Woodard - University of Florida
PIRSA:06110053
Introduction to Quantum Information and Computation from a Foundational Standpoint
Jeffrey Bub - University of Maryland, College Park
Quantum spin Hamiltonian problems and Interactive Proofs
Sergey Bravyi - IBM (United States)
The recipe for the degrees of freedom
One of the most fundamental questions that can be asked when studying any physical theory is: What are its true degrees of freedom? These modes are the building blocks of theories, which can evolve and be observed, shaping how a theory connects to the physical Universe. Finding them, however, is not…
Physics-Informed AI, AI for Physics: From Precision Cosmology to Accelerated Discovery
Biwei Dai - University of California, Berkeley
Deep generative models are emerging as powerful tools for solving physics problems, enabling new approaches to inference, sampling, anomaly detection, and signal reconstruction. In the first part of the talk, I will discuss how generative models, designed with physical principles such as symmetry…
Backfiring Bosonisation in Diverse Dimensions
Various operations on two-dimensional quantum field theories such as the GSO projection and various dualities involve a sum over spin structures. This talk will discuss a subtle mod-16 anomaly in the spin structure, extending the usual mod-8 anomaly of fermion parity, which can obstruct this sum. As…
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
The gravitational memory problem is typically phrased in terms of the failure of constructing a (separable) Hilbert space for radiative gravitational modes at null infinity containing distinct memory states. There is, in a sense, a classical version of this problem: so far, there is no completely…
Lessons learned from GW250114: a loud signal with no Love
Giada Santoro - University of Copenhagen
GW250114, with a signal-to-noise ratio of ∼80, enables the most precise single-event tests of strong-field gravity to date: setting the tightest constraints on deviations from general relativity, delivering the cleanest ringdown measurement yet, and placing stringent bounds on compact object…
Lecture - Non-local quantum computation mini course
Alex May - Perimeter Institute for Theoretical Physics
Exact Matrix Product State for Model States in ideal Bands
Many-body interacting systems cannot generally be treated with analytical tools alone, making numerical methods essential for studying strongly correlated phases. In fractional quantum Hall systems, conformal field theory correlators provide a way to construct exact matrix product state…
Non-invertible symmetries on the lattice
Pranay Gorantla - Perimeter Institute for Theoretical Physics
Non-invertible symmetries have received a lot of attention in the last few years, with nontrivial applications in both high energy physics and condensed matter physics. I will discuss exact realizations of non-invertible symmetries on the lattice. Specifically, I will present a tensor network…
Global Structure of Symmetries in Particle Physics
Seth Koren - University of Notre Dame
As particle physicists we usually think about small fluctuations of fields, but the phenomenology of our theories can depend crucially on the global structure of the symmetries and the topology of field space. First I'll discuss an ambiguity in the Standard Model gauge group, whose different…
