Dear all: Philosophers of science interested in modeling, approximation etc (and that surely means all philosophers of science!) may be interested in this talk Thursday at 2.15, in MR4 CMS. Jeremy Butterfield ----------------------
---------- Forwarded message ---------- Date: Sun, 10 Mar 2019 03:19:26 +0000 From: do_not_re...@admin.cam.ac.uk To: j...@cam.ac.uk Subject: [Talks.cam] This week's talks: CQIF Seminar Thursday 14 March 2019 ---------------------- 14:15 Controlled results in quantum many-body physics: from a dream to reality In detail: ********* Thursday 14 March 2019 ---------------------- CQIF Seminar CONTROLLED RESULTS IN QUANTUM MANY-BODY PHYSICS: FROM A DREAM TO REALITY http://talks.cam.ac.uk/talk/index/120946 Olga Goulko (Boise State) Thursday 14 March 2019, 14:15 - 15:15 MR4, Centre for Mathematical Sciences, Wilberforce Road, Cambridge Many interesting systems in modern condensed matter physics, such as strongly correlated fermions, are too complex to be dealt with by purely analytical methods because of the lack of small parameters. In this talk, I will discuss the power of the diagrammatic technique, which allows us to address problems in many-body physics (and indeed many other areas of physics!) without uncontrolled approximations. I will show how physical quantities can be obtained from the diagrammatic expansion using numerical algorithms, such as quantum Monte Carlo. In this sense, simulations can be viewed as "numerical experiments" probing the system and making quantitative predictions about its properties. In combination with analytical methods they also offer an exciting new way to address fundamental questions. We can test previously uncontrolled assumptions and explicitly check which properties of a model are necessary to produce certain features, and which are irrelevant. I will illustrate the successes and challenges of diagrammatic Quantum Monte Carlo on several examples from atomic physics. ********** To unsubscribe, please use this link: http://talks.cam.ac.uk/reminder (You will need to log into your talks.cam account). If you have any questions please contact webmas...@talks.cam.ac.uk _____________________________________________________ To unsubscribe from the CamPhilEvents mailing list, or change your membership options, please visit the list information page: http://bit.ly/CamPhilEvents List archive: http://bit.ly/CamPhilEventsArchive Please note that CamPhilEvents doesn't accept email attachments. See the list information page for further details and suggested alternatives.
