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DTSTART:20210101T000000
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DTSTART;TZID=UTC:20211123T120000
DTEND;TZID=UTC:20211123T130000
DTSTAMP:20260424T140646
CREATED:20211116T154140Z
LAST-MODIFIED:20211116T160313Z
UID:1744-1637668800-1637672400@rpm.physics.lbl.gov
SUMMARY:Oliver H.E. Philcox (Princeton) " Large Scale Structure Beyond the 2-Point Function"
DESCRIPTION:Abstract: \nQuantum fluctuations in inflation provide the seeds for the large scale distribution of matter today. According to the standard paradigm\, these fluctuations induce density perturbations that are Gaussian distributed. In this limit\, all the information is contained within the pairwise distribution of galaxies\, usually represented by a power spectrum. Today\, the distribution of matter is far from Gaussian\, with structures forming across a vast range of scales. To date\, almost all spectroscopic analyses have used only the two-point function. This begs the question: can we extract more information using higher-point statistics?  \n \nIn this seminar\, I will present a pedagogical overview of the leading-order non-Gaussian statistics\, and demonstrate how they can be used both to sharpen constraints on known physical parameters\, and to provide stringent tests of new physics occurring in the early Universe. One of the major barriers to constraining cosmology from the higher-point functions is computational: measuring the statistics with conventional techniques is infeasible for current and future datasets. I will discuss new methods capable of reducing the computational cost by orders of magnitude\, and show how this facilitates a number of exciting new tests of the cosmological model. Such techniques are already being applied to data from BOSS; the corresponding pipelines can be simply reapplied to DESI data\, and will lead to sharper parameter constraints without additional observing time.\n\n\nhttp://physics.lbl.gov/rpm/index.php/events/If 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/98494136036?pwd=QnR3NjBWb0xQN0hZaTNjTjJGWWpaQT09 \nMeeting ID: 984 9413 6036\nPasscode: 566166\nOne tap mobile\n+16699006833\,\,98494136036#\,\,\,\,*566166# US (San Jose)\n+12532158782\,\,98494136036#\,\,\,\,*566166# US (Tacoma) \nDial by your location\n+1 669 900 6833 US (San Jose)\n+1 253 215 8782 US (Tacoma)\n+1 346 248 7799 US (Houston)\n+1 312 626 6799 US (Chicago)\n+1 646 558 8656 US (New York)\n+1 301 715 8592 US (Washington DC)\nMeeting ID: 984 9413 6036\nPasscode: 566166\nFind your local number: https://lbnl.zoom.us/u/aFnp0OM7V \nJoin by SIP\n98494136036@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 Sydney)\n103.122.167.55 (Australia Melbourne)\n64.211.144.160 (Brazil)\n69.174.57.160 (Canada Toronto)\n65.39.152.160 (Canada Vancouver)\n207.226.132.110 (Japan Tokyo)\n149.137.24.110 (Japan Osaka)\nMeeting ID: 984 9413 6036\nPasscode: 566166 \n──────────
URL:https://rpm.physics.lbl.gov/event/oliver-h-e-philcox-princeton-large-scale-structure-beyond-the-2-point-function/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
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