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April 2020
RPM – Physics Division | Ben Nachman (LBNL) “Gearing up for the 2021 APS DPF Community Planning Process (aka Snowmass)” https://lbnl.zoom.us/j/95017728528
Abstract: The American Physical Society’s Division of Particles and Fields is gearing up for its next community planning process (for historical reasons, called Snowmass). This process will occur over the next year and culminate in a 10 year plan (with a 20 year vision) for the future. It is critical for us to provide input to this process, which will ultimately inform the funding agencies about our community's priorities for the future. In this talk, I will briefly introduce the…
Find out more »May 2020
Ben Nachman (LBNL) “Modeling final state radiation on a quantum computer”
Abstract: Particles produced in high energy collisions that are charged under one of the fundamental forces will radiate proportionally to their charge, such as photon radiation from electrons in quantum electrodynamics. At sufficiently high energies, this radiation pattern is enhanced collinear to the initiating particle, resulting in a complex, many-body quantum system. Classical Markov Chain Monte Carlo simulation approaches work well to capture many of the salient features of the shower of radiation, but cannot capture all quantum effects. I…
Find out more »Hitoshi Murayama (LBNL/UCB)”International Linear Collider”
ABSTRACT: Having discovered the Higgs boson without obvious new particles at the Large Hadron Collider, precision study of the Higgs boson at a Higgs factory is the obvious strategy at the energy frontier. I will review basic motivation and various options for the Higgs factory, and discuss ILC in this context. I will also discuss some recent political developments.
Find out more »Alexander Stibor (LBNL) “QIS with Coherent Electrons: Quantum Sensors, Superconducting Emitters, Signal Transmission and Decoherence Studies”
Abstract: Creating, manipulating and detecting coherent, entangled quantum states and isolating quantum systems from decoherence is at the heart of future quantum information science technologies. With the rise of novel instruments in quantum electronics, the coherent emission and control of free electron beams become relevant in various fields of physics. In this presentation, I will give an overview of the research performed in Tuebingen (Germany) and at the LBL Molecular Foundry where we are currently realizing the QUINTESSENCE QIS project.…
Find out more »Alex Kim (LBNL)”Opportunities for Peculiar Velocity Surveys Using DESI, ZTF-II, and the Vera C. Rubin Observatory”
ABSTRACT: The motions of galaxies on top of the Hubble expansion, peculiar velocities, are a probe of clustering and the growth of structure in the Universe. For distance indicators, peculiar velocities manifest themselves as residuals on the Hubble diagram. Ongoing and upcoming wide-field surveys measuring unprecedented numbers of distance indicators, together with improvements in the calibration of Type Ia supernova brightnesses, will provide exquisite precision in the mapping of the peculiar velocity field or more precisely the peculiar distance field. …
Find out more »Daniel Carney (U. Maryland) “Fundamental Physics at the Quantum Limits of Measurement
Abstract: 40 years ago, Caves, Thorne, and their collaborators asked the question: what are the fundamental quantum limits on the measurement of a small position displacement? The answers to these conceptual questions led to the first direct detection of a gravitational wave by LIGO in 2016. I will review these types of quantum limits and discuss their application to particle physics. In particular, I will present some new dark matter detection ideas which leverage quantum sensing and control of massive…
Find out more »June 2020
Rakshya Khatiwada (Fermilab) “Hunting for Dark matter using quantum devices and sensors”
Rakshya Khatiwada (Fermilab) "Hunting for Dark matter using quantum devices and sensors" Abstract: Very few mysteries in our current picture of the universe are bigger than the puzzle of dark matter. Recently the QCD axion -- a weakly interacting, sub-eV particle -- has been in the limelight as a cold dark matter candidate which also enjoys compelling theoretical motivation as a possible solution to the strong CP problem. This talk will give an overview of modern axion searches with a…
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