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PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
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X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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TZOFFSETFROM:+0000
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DTSTART:20210101T000000
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BEGIN:VEVENT
DTSTART;TZID=UTC:20210202T131000
DTEND;TZID=UTC:20210202T141000
DTSTAMP:20260422T105207
CREATED:20210121T191051Z
LAST-MODIFIED:20210202T172312Z
UID:1595-1612271400-1612275000@rpm.physics.lbl.gov
SUMMARY:SPECIAL RPM-Berkeley Cosmology Seminar | Anton Baleato Lizancos (University of Cambridge) "Fundamental Physics with CMB Lensing and Delensing: the Good\, the Bad and the Systematics"
DESCRIPTION:Abstract: \nGravitational lensing of CMB photons by the matter distribution of the Universe can be both a blessing and nuisance. It’s a blessing because of the way it can be harnessed to map the structures responsible for the deflections\, and from this\, constrain any physics affecting the growth of cosmic structure\, such as the sum of the neutrino masses or dark matter. But lensing is also a nuisance because it generates B-mode polarization which obscures the highly-sought-after primordial signal associated with gravitational waves generated during cosmic inflation\, our most accessible portal to physics near the GUT scale. In this talk\, I will focus on key systematic effects that need to be controlled in order to harness the full potential of the Simons Observatory (SO)\, CMB-S4\, and other upcoming experiments to make progress in these exciting areas.\n\nIn the first part of my talk\, I will briefly review the ways in which emission from galaxies and clusters can bias power spectra and cross-correlations of CMB lensing reconstructions\, and describe our ongoing efforts to understand these biases analytically. Then\, in the second part\, I will explain how the lensing contamination to CMB B-modes can be removed — what is known as delensing — and discuss our recent findings regarding the performance of different delensing methods. I will also summarize preparatory work to delens SO data\, and highlight biases to watch out for (and how to mitigate them) when the matter proxy used for delensing is either the cosmic infrared background or a lensing reconstruction derived from the CMB itself.\n\n──────────\nTroy Cortez is inviting you to a scheduled Zoom meeting. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95317538825 \nMeeting ID: 953 1753 8825\nOne tap mobile\n+16699006833\,\,95317538825# US (San Jose)\n+13462487799\,\,95317538825# US (Houston) \nDial by your location\n+1 669 900 6833 US (San Jose)\n+1 346 248 7799 US (Houston)\n+1 253 215 8782 US (Tacoma)\n+1 312 626 6799 US (Chicago)\n+1 646 558 8656 US (New York)\n+1 301 715 8592 US (Washington D.C)\nMeeting ID: 953 1753 8825\nFind your local number: https://lbnl.zoom.us/u/acS28Unfh8 \nJoin by SIP\n95317538825@zoomcrc.com \nJoin by H.323\n162.255.37.11 (US West)\n162.255.36.11 (US East)\n115.114.131.7 (India Mumbai)\n115.114.115.7 (India Hyderabad)\n213.19.144.110 (Amsterdam Netherlands)\n213.244.140.110 (Germany)\n103.122.166.55 (Australia)\n64.211.144.160 (Brazil)\n69.174.57.160 (Canada)\n207.226.132.110 (Japan)\nMeeting ID: 953 1753 8825 \n──────────
URL:https://rpm.physics.lbl.gov/event/special-rpm-berkeley-cosmology-seminar-anton-beleato-lizancos-university-of-cambridge-fundamental-physics-with-cmb-lensing-and-delensing-the-good-the-bad-and-the-systematics/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210202T160000
DTEND;TZID=UTC:20210202T170000
DTSTAMP:20260422T105207
CREATED:20210121T163316Z
LAST-MODIFIED:20210127T184633Z
UID:1584-1612281600-1612285200@rpm.physics.lbl.gov
SUMMARY:Nitish Nayak (University of California\, Irvine) "Ghostbusters : Estimation of Neutrino Oscillation Parameters by the NOvA Experiment"
DESCRIPTION:Abstract: \nThe discovery of neutrino oscillations provides the first indication of a lepton flavor violating (LFV) process\, one that isn’t predicted by the Standard Model. Extending the Standard Model picture to account for this usually proceeds via the addition of new mass terms\, either Dirac or Majorana in nature or both\, to the Standard Model Lagrangian. Probing the LFV process by characterizing the strength of neutrino oscillations is therefore fundamental to understanding the nature of neutrino masses. In addition\, there is a possibility that neutrino oscillations are CP-violating which can provide hints about the observed matter-antimatter asymmetry in the universe. The NOvA experiment at Fermilab was designed to be sensitive to such questions by measuring some of the key parameters governing oscillatory behaviour. It detects neutrinos (antineutrinos) using an intense beam of predominantly muon-neutrinos (muon-antineutrinos) from the NuMI facility at Fermilab. It does this by housing two detectors\, a 1-kiloton Near Detector near the beam source and a massive 14-kiloton Far Detector\, 810 km away\, near the Canadian border. The measurement of neutrino oscillation parameters is performed by examining the neutrino beam and the simulation at the Near Detector and then observing how many neutrinos have oscillated by the time they reach the Far Detector. This is a challenging analysis highlighted by the fact that only a handful of oscillated events are observed at the Far Detector every year. This is made worse by the fact that the Far Detector is placed on the surface\, thus collecting an enormous amount of cosmic background (at a rate of $\sim$ 10 kHz). In this talk I will therefore provide an overview of how this measurement is performed and some of the key problems we wrestle with. These problems can be statistical\, computational and even theoretical and so I will put particular emphasis on the methodologies used in overcoming them. \n\n\nhttp://physics.lbl.gov/rpm/index.php/events/ \nIf you are looking to confirm if there is an event\, due to room reservation\, please go to RPM website for a list of all scheduled talks.\n──────────\nTroy Cortez is inviting you to a scheduled Zoom meeting. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/96362789941 \nMeeting ID: 963 6278 9941\nOne tap mobile\n+16699006833\,\,96362789941# US (San Jose)\n+13462487799\,\,96362789941# US (Houston) \nDial by your location\n+1 669 900 6833 US (San Jose)\n+1 346 248 7799 US (Houston)\n+1 253 215 8782 US (Tacoma)\n+1 646 558 8656 US (New York)\n+1 301 715 8592 US (Washington DC)\n+1 312 626 6799 US (Chicago)\nMeeting ID: 963 6278 9941\nFind your local number: https://lbnl.zoom.us/u/aduPl1eNAA \nJoin by SIP\n96362789941@zoomcrc.com \nJoin by H.323\n162.255.37.11 (US West)\n162.255.36.11 (US East)\n115.114.131.7 (India Mumbai)\n115.114.115.7 (India Hyderabad)\n213.19.144.110 (Amsterdam Netherlands)\n213.244.140.110 (Germany)\n103.122.166.55 (Australia)\n64.211.144.160 (Brazil)\n69.174.57.160 (Canada)\n207.226.132.110 (Japan)\nMeeting ID: 963 6278 9941 \n────────── \n 
URL:https://rpm.physics.lbl.gov/event/nitish-nayak-university-of-california-irvine-ghostbusters-estimation-of-neutrino-oscillation-parameters-by-the-nova-experiment/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210211T160000
DTEND;TZID=UTC:20210211T170000
DTSTAMP:20260422T105207
CREATED:20210211T184819Z
LAST-MODIFIED:20210211T184819Z
UID:1606-1613059200-1613062800@rpm.physics.lbl.gov
SUMMARY:Geoff Penington (UCB) "Replica Wormholes\, Entanglement Wedges and the Black Hole Information Paradox"
DESCRIPTION:Abstract: \nHawking famously argued\, based on semiclassical calculations\, that the radiation from evaporating black holes is contains no information about the matter that fell in. This would be inconsistent with the unitarity of quantum mechanics. In this talk\, I will show that\, in more careful ‘replica trick’ calculations\, the gravitational path integral becomes dominated at late times by saddles containing spacetime wormholes. These wormholes cause the entropy to decrease after the Page time\, consistent with unitarity\, and allow information to escape from the interior of the black hole. \nhttp://physics.lbl.gov/rpm/index.php/events/ \nIf you are looking to confirm if there is an event\, due to room reservation\, please go to RPM website for a list of all scheduled talks.\n──────────\nTroy Cortez is inviting you to a scheduled Zoom meeting. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585 \nMeeting ID: 917 8226 8585\nOne tap mobile\n+16699006833\,\,91782268585# US (San Jose)\n+13462487799\,\,91782268585# US (Houston) \nDial by your location\n+1 669 900 6833 US (San Jose)\n+1 346 248 7799 US (Houston)\n+1 253 215 8782 US (Tacoma)\n+1 646 558 8656 US (New York)\n+1 301 715 8592 US (Germantown)\n+1 312 626 6799 US (Chicago)\nMeeting ID: 917 8226 8585\nFind your local number: https://lbnl.zoom.us/u/abeLb1T4q1 \nJoin by SIP\n91782268585@zoomcrc.com \nJoin by H.323\n162.255.37.11 (US West)\n162.255.36.11 (US East)\n115.114.131.7 (India Mumbai)\n115.114.115.7 (India Hyderabad)\n213.19.144.110 (EMEA)\n103.122.166.55 (Australia)\n64.211.144.160 (Brazil)\n69.174.57.160 (Canada)\n207.226.132.110 (Japan)\nMeeting ID: 917 8226 8585 \n──────────
URL:https://rpm.physics.lbl.gov/event/geoff-penington-ucb-replica-wormholes-entanglement-wedges-and-the-black-hole-information-paradox/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
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