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X-ORIGINAL-URL:https://physics.sciences.ncsu.edu
X-WR-CALDESC:Events for Department of Physics and Astronomy
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DTSTART;TZID=America/New_York:20260209T160000
DTEND;TZID=America/New_York:20260209T170000
DTSTAMP:20260510T210535
CREATED:20260116T215535Z
LAST-MODIFIED:20260206T141514Z
UID:52762-1770652800-1770656400@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Michael Shull
DESCRIPTION:Title: Ionization Sources of the Local Interstellar Clouds \nAbstract: The structure of the local interstellar clouds is influenced by stellar ionizing sources that shaped it dynamically and thermally over the last 5 million years. The dominant sources include two massive B-type stars\, currently at distances of 124 and 151 pc in the Canis Majoris constellation\, and three hot white dwarfs (at 52\, 60\, and 77 pc). Our solar system is surrounded by wispy interstellar gas clouds\, 30 lt yr in extent\, which shield us from most of this ionizing radiation. However\, 4.4 million years ago\, those two B-stars stars passed within 30–35 light years of the Sun\, leaving behind a trail of ionized and photoelectrically heated gas. Additional ionizing photons come from the Local Hot Bubble\, a glow of million-degree plasma generated by shock waves from past supernova explosions in the nearby Scorpius – Centaurus OB association. The unusual level of ionized hydrogen and helium entering the heliosphere likely reflects these sources\, altered by the propagation and filtering of EUV and X-ray radiation through the clouds.
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-michael-shull/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
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DTSTART;TZID=America/New_York:20260217T153000
DTEND;TZID=America/New_York:20260217T163000
DTSTAMP:20260510T210535
CREATED:20260116T220553Z
LAST-MODIFIED:20260210T210155Z
UID:52800-1771342200-1771345800@physics.sciences.ncsu.edu
SUMMARY:TNT Seminar: Mia Kumamoto
DESCRIPTION:Title: Pion Mass Dependence in Chiral EFT and the QCD Axion \nAbstract:  \nQCD and effective field theory together put low energy nuclear physics on solid theoretical footing to calculate observables with some confidence\, but open questions remain.  Two related questions are why QCD seems not to violate CP and how the properties of nuclear matter depend on the light quark masses (or equivalently the pion mass).  The classic solution to the former problem is to invoke a new light field\, the QCD axion\, a well-motivated dark matter candidate which a diverse experimental campaign is currently searching for.  Neutron stars can also probe the QCD axion parameter space if nuclear matter becomes more attractive at reduced pion mass via the formation of an axion condensate.  Answering the question of whether an axion with a mass at the QCD prediction could condense in neutron stars hinges on a number of fundamental questions in nuclear physics\, including the properties of three nucleon forces\, the importance of light resonances neglected in chiral EFT\, fine tuning in s-wave scattering\, and at what density chiral symmetry restoration occurs in cold nuclear matter.  In this talk\, I will present our current research on pion mass dependence in chiral EFT\, possible observable signatures in neutron stars\, and what the study of pion mass dependence can teach us about extant theoretical problems in low energy nuclear physics.
URL:https://physics.sciences.ncsu.edu/event/tnt-seminar-mia-kumamoto/
LOCATION:Riddick 400P\, 2401 Katherine Stinson Dr\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Nuclear Theory Seminar
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DTSTART;TZID=America/New_York:20260223T160000
DTEND;TZID=America/New_York:20260223T170000
DTSTAMP:20260510T210536
CREATED:20260116T215555Z
LAST-MODIFIED:20260116T215832Z
UID:52764-1771862400-1771866000@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Greg Gbur
DESCRIPTION:Title: Invisibility: The History and Science of How Not To Be Seen \nAbstract: The idea that it might be possible to make a perfect invisibility cloak was a frequent topic in the news and the scientific literature over the past two decades. The subject of invisibility physics\, however\, has a history that stretches back well over a century. In this talk\, we will look at the origins of invisibility physics\, from the first attempts of science fiction writers to explain the impossible\, all the way to modern approaches. We will see how concepts of invisibility have touched many aspects of physics through the years\, even when it wasn’t directly recognized as such.
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-greg-gbur/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
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DTSTART;TZID=America/New_York:20260226T100000
DTEND;TZID=America/New_York:20260226T120000
DTSTAMP:20260510T210536
CREATED:20260220T174315Z
LAST-MODIFIED:20260220T174524Z
UID:52839-1772100000-1772107200@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Aeron McConnell
DESCRIPTION:Opto-Spintronics in Symmetry Broken Systems \nZoom link: \nhttps://ncsu.zoom.us/j/93377097763?pwd=RKLuIssUaLWny2I65NH95Q5trOYbCe.1
URL:https://physics.sciences.ncsu.edu/event/final-defense-aeron-mcconnell/
LOCATION:Patners II 1514
CATEGORIES:In The Department
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