Yale Postdoctoral Trainees

NPA Seminar: Adriaan Duivenvoorden, Flatiron Institute; Simons Foundation, "Cosmology from the fine details of the microwave sky with the Atacama Cosmology Telescope and the Simons Observatory"

Modern ground-based microwave observatories offer a high-resolution perspective on the cosmic microwave background (CMB) and its secondary components, complementing galaxy surveys and the low resolution CMB data from the Planck and WMAP satellites. In this talk, I will introduce two such observatories, the Atacama Cosmology Telescope (ACT) and the Simons Observatory. The ACT collaboration is preparing to release its sixth public data release. This release, DR6, is the result from a 6-year-long survey covering 40% of the sky at arcminute resolution.

NPA Seminar: Deepa Thomas, The University of Texas at Austin, "Probing hot QCD matter with charm and beauty quarks"

Ultra-relativistic heavy-ion collisions produce a hot and dense QCD matter, called Quark-Gluon Plasma (QGP). Unlike in ordinary matter, quarks and gluons are not confined within short distances but can roam freely over distances larger than the hadronic scale in the state of QGP. Understanding this novel state of matter offers a new way to learn how quarks and gluons bind to form stable particles like the proton.

NPA Seminar: Bryan Ramson, Fermilab, "The New Era of Precision Neutrino Physics"

Long-baseline neutrino oscillation experiments present some of the most compelling paths toward physics beyond the standard model. Measurement of the leptonic mixing matrix through oscillation and observation of the degree of leptonic CP violation demonstrates a proof of concept for understanding the difference between matter and anti-matter in the observable universe. State of the art experiments like NOvA and T2K are currently performing measurements of neutrino oscillation, but ultimately, will be statistically limited.

Elusives Journal Club: Eleanor Graham, Yale, "Synchronous Detection of Cosmic Rays and Correlated Errors in Superconducting Qubit Arrays"

Eleanor Graham will lead a discussion on the paper “Synchronous Detection of Cosmic Rays and Correlated Errors in Superconducting Qubit Arrays” found at https://arxiv.org/pdf/2402.03208.pdf

Members in the departments of physics and astronomy who work on dark matter and neutrino-related fields are invited to get together to discuss papers related to their field. Topics include: neutrinos, dark matter, BSM physics, fundamental symmetries, precision physics and more.

Contact Xiran Bai and Eleanor Graham for more information.

NPA Seminar: Stephen Kuenstner, Boston University, "Sensitive Searches for Axion Dark Matter with Solid-State Spin Ensembles"

In this talk, I’ll describe how we use solid-state spin ensembles, magnetic resonance, and quantum sensing techniques to search for axion dark matter in the third-generation CASPEr-e detector. Discovering and characterizing axion dark matter could resolve the longstanding Strong CP Problem, in addition to revealing the identity of dark matter. The Strong CP Problem stems from the puzzling lack of a CP-violating permanent electric dipole moment (EDM) in nucleons.

NPA Seminar: Renee Ludlam, Wayne State University, "Characterizing the Properties of Accreting Neutron Stars through X-ray Observations"

The matter inside of a neutron star (NS) exists in an ultra-dense, cold state that we are unable to reproduce in Earth-based laboratories. Hence the only way to understand how matter behaves in this environment, i.e. determining the Equation of State (EoS), is through observations of these objects. NSs in low-mass X-ray binaries, where matter is stripped from a stellar companion to form an accretion disk, provide a unique opportunity to learn more about accretion physics and properties of the compact object itself.

NPA Seminar: Kyle Leach, Colorado School of Mines, "A Tale of Two Symmetries: Examining the PMNS and CKM Matrices via Weak Nuclear Decay"

It was the best of times, it was the worst of times. Just as the classic English novel lends its title well to the spirit of understanding symmetries in the standard model (SM), the opening words also concisely sum up the status of beyond standard model (BSM) physics searches through tests of the fundamental symmetric matrices over the past few decades. Despite the identical mathematical formalism that generates these matrices in the SM, empirically the level of observed mixing within these two are dramatically different.

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