Format results
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Analytical Methods for Inflation Correlators.
Zhehan Qin - Tsinghua University
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Holographic Phase Transitions in the early Universe
Rashmish Mishra - Harvard University
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CHIME is secretly an axion experiment - VIRTUAL
Katelin Schutz - McGill University
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Primordial Black Holes from Axion Domain Walls
David Dunsky - New York University (NYU)
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The Unruh effect and its connection to classical radiation (virtual)
Georgios Vacalis - University of Oxford
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A colorful mirror solution to the strong CP problem - VIRTUAL
Quentin Bonnefoy - University of Strasbourg
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CMB birefringence from axion strings
Andrew Long - Rice University
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Quantum Insights into Optical Astronomical Interferometry
Yunkai Wang - Perimeter Institute for Theoretical Physics
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The quantum mechanics of a perfect fluid
Riccardo Rattazzi - L'Ecole Polytechnique Federale de Lausanne (EPFL)
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Particle Physics Seminar Series - TBA
Rebecca Leane - Stanford University
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Axions at high density
Stefan Stelzel - L'Ecole Polytechnique Federale de Lausanne (EPFL)
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Analytical Methods for Inflation Correlators.
Zhehan Qin - Tsinghua University
The correlation functions of large-scale fluctuations are crucial observables in modern cosmology. These boundary correlators contain rich information about the bulk dynamics and can be used to probe physics at the inflation scale. There have been considerable efforts in the analytical study of… -
Holographic Phase Transitions in the early Universe
Rashmish Mishra - Harvard University
Strongly coupled confining theories are well-motivated in many BSM frameworks. The early universe cosmological history of these theories provides possibilities for observable signals. These theories undergo confinement deconfinement phase transition in the early universe, which can result in… -
CHIME is secretly an axion experiment - VIRTUAL
Katelin Schutz - McGill University
In the presence of radiation from bright astrophysical sources at radio frequencies, axion dark matter can undergo stimulated decay to two nearly back-to-back photons, meaning that bright sources could have faint counterimages in other parts of the sky. The counterimages will be spectrally distinct… -
Primordial Black Holes from Axion Domain Walls
David Dunsky - New York University (NYU)
Besides providing a possible explanation to the strong CP problem and dark matter, the QCD axion possesses a rich cosmology. For example, if PQ breaking occurs after inflation, then axion cosmic strings form. Near the QCD phase transition, every axion string become attached to a domain wall which… -
The Unruh effect and its connection to classical radiation (virtual)
Georgios Vacalis - University of Oxford
Particle production can occur in a curved spacetime like, for example, in the case of thermal emission of particles from black holes, otherwise known as Hawking radiation. The Unruh effect is a quantum field theory result that is closely connected to Hawking radiation. It states that accelerated… -
A colorful mirror solution to the strong CP problem - VIRTUAL
Quentin Bonnefoy - University of Strasbourg
Theories which spontaneously break spacetime parity can solve the strong CP problem. They usually have few free parameters and are therefore very predictive, but their landscape remains quite unexplored. I will present a construction based on a complete mirror copy of the standard model, linked to… -
CMB birefringence from axion strings
Andrew Long - Rice University
A cosmological network of axion strings in our Universe today may leave its imprint on the polarization pattern of the cosmic microwave background radiation through the phenomenon of axion-string-induced birefringence. I will explain how this signal arises, discuss how it depends on the properties… -
Quantum Insights into Optical Astronomical Interferometry
Yunkai Wang - Perimeter Institute for Theoretical Physics
The implementation of optical astronomical interferometry presents several technical challenges, such as establishing a shared reference frame and conducting nonlocal measurements. This presentation aims to establish a connection between the theoretical framework developed in quantum information… -
The quantum mechanics of a perfect fluid
Riccardo Rattazzi - L'Ecole Polytechnique Federale de Lausanne (EPFL)
Finite density systems can be described by effective field theories with non-linearly realized space-time symmetries, whose construction resembles that of the QCD chiral lagrangian. Based on that similarity, one would expect the construction to work equally well classically and quantum mechanically… -
Particle Physics Seminar Series - TBA
Rebecca Leane - Stanford University
Abstract and Zoom link TBA -
Axions at high density
Stefan Stelzel - L'Ecole Polytechnique Federale de Lausanne (EPFL)
In this talk I will discuss the rich interplay of light particles with density. In particular, I will show that the couplings of the QCD axion get modified in high density conditions. I will discuss the implications on astrophysical constraints, such as supernova and neutron star bounds. I will then… -
A PETITE Step Toward Accurate Predictions For Fixed-Target Experiments
Nikita Blinov - York University
An intense beam of Standard Model (SM) particles colliding with a fixed target is one of oldest types of accelerator-based experiments. With recent interest in production and detection of relatively light, weakly-coupled (``dark sector'') states, these set-ups are again playing a central role in the…