Format results
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In Search of Cosmic Antinuclei from Dark Matter with the GAPS Experiment
Kerstin Perez - Columbia University
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Kicking the tires on picolensing as a probe of primordial black hole dark matter
Michael Fedderke - Perimeter Institute for Theoretical Physics
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Unlocking the mysteries of dark matter and neutrinos with PandaX
Jianglai Liu - Shanghai Jiao Tong University
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Upper Bound on Thermal Gravitational Wave Backgrounds from Hidden Sectors
Juraj Klaric - University of Amsterdam
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Particle Physics Seminar - TBA
David E. Kaplan - Johns Hopkins University - Department of Physics & Astronomy
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Shadow Matter
David E. Kaplan - Johns Hopkins University - Department of Physics & Astronomy
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The Monodromic Axion-Photon Coupling
Arthur Platschorre - University of Oxford
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Probing New Physics with Supernovae
Claudio Manzari - University of California, Berkeley
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Dark Matter Substructure as a Window to Fundamental Physics (Virtual)
Huangyu Xiao
The matter power spectrum on subgalactic scales is very weakly constrained so far. While inflation predicts a nearly scale-invariant primordial power spectrum down to very small scales, many new physics scenarios can lead to significantly different predictions, such as axion dark matter in the post… -
In Search of Cosmic Antinuclei from Dark Matter with the GAPS Experiment
Kerstin Perez - Columbia University
Dark matter particle interactions could imprint characteristic signals in cosmic-ray and multi-wavelength observations of the sky. The central challenge is to distinguish these signatures from similar spectra produced by standard astrophysical processes, such as the life and death of stars and the… -
Kicking the tires on picolensing as a probe of primordial black hole dark matter
Michael Fedderke - Perimeter Institute for Theoretical Physics
Primordial black hole (PBH) dark matter can be probed by "picolensing". Widely spatially separated gamma-ray detectors near Earth would observe parallax of an intervening PBH lens with respect to a cosmologically distant gamma-ray burst (GRB). This parallax can be of order the Einstein angle of the… -
Big Bang Nucleosynthesis: New Physics and New Tools
Big Bang Nucleosynthesis (BBN) is a powerful tool for probing both new physics and LCDM, and complements analyses utilizing the Cosmic Microwave Background (CMB) and results from particle experiment. I will provide two examples of BBN probes of BSM models. I will then discuss new kinds of analyses… -
Unlocking the mysteries of dark matter and neutrinos with PandaX
Jianglai Liu - Shanghai Jiao Tong University
Dark matter and neutrinos are elusive neutral matter filling up our Universe. The PandaX (Particle and Astrophysical Xenon) experiment, located in the China Jinping Underground Laboratory, is dedicated to searching for dark matter particles and studying the fundamental properties of neutrinos. The… -
Superradiant interactions of cosmic noise
In this talk I will do three things. First, I will outline the conditions under which the interaction rate of inelastic processes with a system consisting of N targets scales as N^2. Second, I will present computations of interaction rates for several weakly interacting particles, including the… -
Causality Protection in Effective Field Theory
I discuss how quantum mechanical effects prevent violations of causality in low energy processes, even when faster-than-light propagation is possible. At the classical level, faster-than-light propagation can be used to build "time-machine" configurations that violate causality. However, low-energy… -
Upper Bound on Thermal Gravitational Wave Backgrounds from Hidden Sectors
Juraj Klaric - University of Amsterdam
Hot viscous plasmas unavoidably emit a gravitational wave background, similar to electromagnetic black body radiation. In this talk we will discuss the contribution from hidden particles to the diffuse background emitted by the primordial plasma in the early universe. While this contribution can… -
Particle Physics Seminar - TBA
David E. Kaplan - Johns Hopkins University - Department of Physics & Astronomy
Abstract TBA --- Zoom link -
Shadow Matter
David E. Kaplan - Johns Hopkins University - Department of Physics & Astronomy
I will argue that there are quantum states of the field theories of general relativity and electromagnetism that we typically ignore, but have interesting phenomenological effects. These states amount to relaxing the constraint equations known as the Hamiltonian and momentum constraints in GR and… -
The Monodromic Axion-Photon Coupling
Arthur Platschorre - University of Oxford
The axion is one of the most compelling new physics candidates, deriving many of its important properties from an approximate shift symmetry. In this talk, we will consider the general form of the axion coupling to photons in the presence of such a broken shift symmetry. We will show that the axion… -
Probing New Physics with Supernovae
Claudio Manzari - University of California, Berkeley
It is well known that the study and observation of core collapse Supernovae (SN) provide powerful tools to probe possible scenarios of physics beyond the Standard Model (SM). After reviewing the basics beyond the mechanism of a SN explosion and how these observations can constraint models of new…