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X-ORIGINAL-URL:https://rpm.physics.lbl.gov
X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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DTSTART;TZID=America/Los_Angeles:20180604T140000
DTEND;TZID=America/Los_Angeles:20180604T150000
DTSTAMP:20260413T180446
CREATED:20180417T153520Z
LAST-MODIFIED:20180417T153520Z
UID:833-1528120800-1528124400@rpm.physics.lbl.gov
SUMMARY:Masashi Hazumi (KEK) "LiteBIRD Satellite for Tests of Cosmic Inflation and Quantum Gravity"
DESCRIPTION:Abstract:\nCosmological inflation is the leading hypothesis to resolve the problems in the Big Bang theory.\nIt predicts that primordial gravitational waves were created during the inflationary era\, which\nthen imprinted large-scale curl patterns in the cosmic microwave background (CMB)\npolarization map called the B-modes.\nMeasurements of the CMB B-mode signals are known as the best probe\nto detect the primordial gravitational waves.\nLiteBIRD is a candidate for JAXA’s strategic large mission to map the polarization of\nthe CMB radiation over the full sky at large angular scales with unprecedented precision\,\nwhich will offer us a crucial test of cosmic inflation. It will also serve as the first crucial test of\nquantum gravity such as superstring theory. Precise polarization maps of LiteBIRD will also\nprovide us with valuable pieces of information on particle physics and astrophysics.\nIn this talk\, I will give an overview of the science and design of LiteBIRD
URL:https://rpm.physics.lbl.gov/event/masashi-hazumi-ipmu-tba/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180614T160000
DTEND;TZID=America/Los_Angeles:20180614T170000
DTSTAMP:20260413T180446
CREATED:20180518T110903Z
LAST-MODIFIED:20180518T110903Z
UID:856-1528992000-1528995600@rpm.physics.lbl.gov
SUMMARY:Norbert Zacharias (USNO) "Impact of Gaia on Astrometry and Beyond"
DESCRIPTION:April 2018 marks the 2nd data release (DR2) of the ESA Gaia space mission.\nA new era in astrometry begun. Accurate positions\, proper motions\nand parallaxes for over a billion stars are now available on the\nsub-mas level. The properties of DR2 will be explained in context\nto pre-Gaia data and the final Gaia results expected in a few years.\nThe impact of Gaia reaches far into almost all of astronomy\, and a\nfew examples will be given.
URL:https://rpm.physics.lbl.gov/event/norbert-zacharias-usno-tba/
LOCATION:INPA Common Room (50-5026)\, 50-5026
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180621T080000
DTEND;TZID=America/Los_Angeles:20180621T170000
DTSTAMP:20260413T180446
CREATED:20180613T103600Z
LAST-MODIFIED:20180613T103600Z
UID:868-1529568000-1529600400@rpm.physics.lbl.gov
SUMMARY:Joshua Spitz (U. Michigan) " First Measurement of Monoenergetic Muon Neutrino Charged Current Interactions
DESCRIPTION:ABSTRACT:\nThis talk will present the first measurement of monoenergetic muon\nneutrino charged current interactions. The MiniBooNE experiment at\nFermilab has been used to isolate and study 236 MeV muon neutrino\nevents originating from charged kaon decay at rest. The muon\nkinematics and total cross section have been extracted from this data.\nNotably\, this result is the first known-energy\, weak-interaction-only\nprobe of the nucleus to yield a measurement of omega (energy\ntransferred to the nucleus) using neutrinos\, a quantity thus far only\naccessible through electron scattering. I will discuss the\nsignificance of this measurement\, and these monoenergetic neutrinos in\ngeneral\, for elucidating both the neutrino-nucleus interaction and\noscillations.\nSlides here
URL:https://rpm.physics.lbl.gov/event/joshua-spitz-u-michigan-first-measurement-of-monoenergetic-muon-neutrino-charged-current-interactions/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180628T160000
DTEND;TZID=America/Los_Angeles:20180628T170000
DTSTAMP:20260413T180446
CREATED:20180514T092705Z
LAST-MODIFIED:20180514T092705Z
UID:853-1530201600-1530205200@rpm.physics.lbl.gov
SUMMARY:Adam Becker (UCB) "An Incomplete Survey of Proposed Solutions to the Quantum Measurement Problem"
DESCRIPTION:ABSTRACT:\nThe central puzzle that drives the field of quantum foundations is the measurement problem: what gives rise to the appearance of wave function collapse? While there is no single answer to this question that has wide acceptance\, this is not for lack of available options. A variety of solutions to the measurement problem have been proposed\, in the form of various interpretations or modifications of quantum mechanics. Some solutions eliminate collapse entirely\, as in the many-worlds and de Broglie-Bohm interpretations. Others propose altering the dynamics of the theory to make collapse objective\, as in GRW (stochastic collapse) and gravitational collapse theories. “Psi-epistemic” interpretations attempt to dissolve the measurement problem by claiming that the wave function isn’t something real in itself\, but merely a representation of our knowledge of an underlying reality. Finally\, Copenhagen-style interpretations claim that that there is no “reality” to be talked about at all. Bounding this menagerie of interpretations are several important theorems that restrict the options available. Bell’s theorem is the most famous (and most misunderstood) of these\, but it is not the only one. In this talk\, I will briefly lay out the measurement problem and its history\, go over several of the theorems that constrain the possible solutions\, and discuss a few of the families of quantum interpretations and the open problems that remain for each of them.\nSlides here
URL:https://rpm.physics.lbl.gov/event/adam-becker-u-michigan-tba/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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