Events at Director’s Conference Room (50A-5132) – LBNL

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Title: Flavor Patterns of Fundamental Particles from Quantum Entanglement? Abstract: The Cabibbo-Kobayashi-Maskawa (CKM) matrix, which controls flavor mixing between the three generations of quark fermions, is a key input to the Standard Model of particle physics. In this talk I will identify a surprising connection between quantum entanglement and the degree of quark mixing. Focusing on a specific limit of 2→2 quark … Read More

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Title : Predicting the dark matter – baryon abundance ratio. Abstract : We discuss relaxation solutions to the dark matter – baryon coincidence problem in the context of QCD axion dark matter. In relaxation solutions, a moduli dynamically adjusts the mass of dark matter and baryons until their energy densities are O(1) the same. Because the QCD axion is heavily connected to QCD, scanning the QCD … Read More

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Title: The Quality/Cosmology Tension for a Post-Inflation QCD Axion Abstract: The QCD axion is not only a leading contender as a solution to the Strong CP problem, it is also a natural dark matter candidate. In particular, the post-inflationary axion is particularly attractive because of the possibility of a unique prediction of the axion mass if axion makes up all of dark matter. … Read More

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Title: Higher Order Flavor Sum Rules  Abstract:   Hadronic physics is notoriously challenging to study due to the non-perturbative nature of QCD. Although significant advances have been made in recent years, there are still no reliable methods for calculating observables in multibody hadron decays. As a result, flavor physics predictions, which rely on the approximate SU(3) flavor symmetry of QCD, remain the state … Read More

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Title: Quantum Gravity Signals in 4D Einstein gravity from 2D JT gravity Abstract: It is generally believed that quantum gravity fluctuations in a vacuum are immeasurably small from an effective field theory (EFT) perspective, as their size is suppressed by powers of the Planck mass. In this talk, we study quantum fluctuations in the lightcone metric of the 4-d Einstein-Hilbert … Read More