Beyond the Standard Model
Sebastian Ellis
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Cosmology Theory
Zach Weiner - Perimeter Institute for Theoretical Physics
Cosmology Theory
Zach Weiner - Perimeter Institute for Theoretical Physics
Lecture - Discrete Structures in Perturbative Quantum Field Theory
Rowan Yeats - University of Waterloo
Lecture - The Conceptual and Mathematical Structure of Quantum Theory,
Lucien Hardy - Perimeter Institute for Theoretical Physics
Single Photon Detection of 1.5THz Radiation with the Quantum Capacitance Detector
Pierre Echternach - National Aeronautics and Space Administration
Far-infrared spectroscopy can reveal secrets of galaxy evolution and heavy-element enrichment throughout cosmic time, and astronomers worldwide are designing cryogenic space telescopes for far-IR spectroscopy. The most challenging aspect is a far-IR detector which is both exquisitely sensitive…
Black hole archaeology with gravitational waves
Djuna Croon - TRIUMF
The growing gravitational wave dataset makes black hole population studies possible. In this talk I will demonstrate how such studies can be used to study particle and nuclear physics. The key insight is that a wide range of initial stellar masses leave no compact remnant, due to the physics of pair…
Subsystem-Symmetry protected phases of matter
Fiona Burnell - University of Minnesota
We know that different systems with the same unbroken global symmetry can nevertheless be in distinct phases of matter. These different "symmetry-protected topological" phases are characterized by protected (gapless) surface states. After reviewing this physics in interacting systems with global…
Can We Understand the Standard Model?
John Baez - University of California, Riverside
40 years trying to go beyond the Standard Model hasn't yet led to any clear success. As an alternative, we could try to understand why the Standard Model is the way it is. In this talk we review some lessons from grand unified theories and also from recent work using the octonions. The gauge group…
A Generalized Hartle-Hawking State
Stephon Alexander - Brown University
The Hartle-Hawking-Vilenkin state is defined on mini-superspace and is semiclassically related to inflationary theory. However, the state suffers a few problems connected to the path integral of Euclidean or the Lorentzian measure of metrics. In this talk, we will explore a way around these issues…
Supertranslation invariance of angular momentum
Po-Ning Chen - University of California, Riverside
LIGO's successful detection of gravitational waves has revitalized the theoretical understanding of the angular momentum carried away by gravitational radiation. An infinite-dimensional supertranslation ambiguity has presented an essential difficulty for decades of study. Recent advances were made…
Fast estimation of outcome probabilities for quantum circuits
Hakop Pashayan - Foxconn
We present two classical algorithms for the simulation of universal quantum circuits on n qubits constructed from c instances of Clifford gates and t arbitrary-angle Z-rotation gates such as T gates. Our algorithms complement each other by performing best in different parameter regimes. The Estimate…
How can statistical mechanics help ecology?
Ricardo Garcia - ICTP - SAIFR
Statistical mechanics is the branch of physics that explains how macroscopic properties of matter emerge from the behavior of its microscopic constituents. Population ecology studies how and why populations change over time and space, primarily due to the interaction among individuals and between…
Primordial non-gaussianities from consistency relations: a proof of principle
Angelo Esposito - Columbia University
In this talk I will discuss the application of the so-called “consistency relations” for large scale structures to the study of primordial non-Gaussianities of the local f_NL type. I will first introduce the consistency relations themselves, commenting on some important aspects and underlying…
Stiefel liquids: possible non-Lagrangian quantum criticality from intertwined orders
Chong Wang - Perimeter Institute for Theoretical Physics
We propose a new type of critical quantum liquids, dubbed Stiefel liquids, based on 2+1 dimensional Wess-Zumino-Witten models on target space SO(N)/SO(4). We show that the well known deconfined quantum critical point and U(1) Dirac spin liquid are unified as two special examples of Stiefel liquids…
The Higher Algebra of Supersymmetry
John Huerta - University of Lisbon
We have already met the octonionic Fierz identity satisfied by spinors in 10-dimensional spacetime. This identity makes super-Yang-Mills "super" and allows the Green-Schwarz string to be kappa symmetric. But it is also the defining equation of a "higher" algebraic structure: an L-infinity algebra…
Black hole induced false vacuum decay from first principles
Sergey Sibiryakov - McMaster University
It has been proposed that microscopic black holes can catalyze decay of metastable false vacuum. The calculations of the decay rate existing in the literature make use of the Euclidean time formalism developed for equilibrium configurations. This is not the case, however, for a realistic black hole…