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Nominations for 1st qtr MIRS poll: Loop+allied QG recorded seminars

  1. Mar 8, 2012 #1


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    As a window on current QG research, recorded seminar (RS) talks have become a valuable alternative to the online preprint archive.
    One reason for this is the PIRSA (Perimeter Institute Recorded Seminar Archive) quantum gravity series:
    http://pirsa.org/S005 (select term="all" and year="all")
    This has posted videos of 15 talks just in the past 6 months---going back to beginning of September 2011.
    Another factor is the ILQGS (International LQG Seminar):
    This has slides and audio for 9 talks during the same period (from beginning of September).

    I want to try making the 1st quarter 2012 poll a "MIRS" (most important recorded seminar talk) rather than a "MIP" poll.

    Here are a few recorded talks that we could consider including in a 1st quarter MIRS poll.
    If you wish check out the PIRSA and ILQGS listings and identify others of particular interest or importance. As always in these polls the aim is to identify lines of investigation and results which we think will prove especially valuable to future research.

    POSSIBLE ILQGS CANDIDATES (not a complete list--see the seminar's website for others):

    Tuesday, Sept. 20th
    Jacek Puchta, University of Warszaw
    Title: The Feynman diagramatics for the spin foam models
    PDF of the talk (3MB)
    Audio [.wav 35MB], Audio [.aif 3MB].

    Tuesday, Oct. 18th
    William Nelson, PennState
    Title: Inhomogeneous loop quantum cosmology
    PDF of the talk (500k)
    Audio [.wav 32MB], Audio [.aif 3MB].

    Tuesday, Nov. 1st
    Tim Koslowski, Perimeter Institute
    Title: Shape dynamics
    PDF of the talk (500k)
    Audio [.wav 33MB], Audio [.aif 3MB].

    Tuesday, Nov. 15th
    Jonathan Engle, Florida Atlantic Univesrity
    Title: Plebanski sectors of the new spin foam models
    PDF of the talk (3.5MB)
    Audio [.wav 38MB], Audio [.aif 4MB].

    Tuesday, Jan 31st.
    Parampreet Singh, LSU
    Title: Physics of Bianchi models in LQC
    PDF of the talk (500KB)
    Audio [.wav 40MB], Audio [.aif 4MB].

    Tuesday, Feb 14th.
    Claudio Perini, PennState
    Title: Classical limit of spin foams on arbitrary triangulations
    PDF of the talk (2MB)
    Audio [.wav 40MB], Audio [.aif 4MB].

    Tuesday, Feb 28th.
    Marc Geiller, Univ. Paris
    Title: Continuous formulation of the LQG phase space
    PDF of the talk (400k)
    Audio [.wav 36MB], Audio [.aif 4MB].

    Links to all these and a lot more are immediately available if you simply click on http://relativity.phys.lsu.edu/ilqgs/
    so I won't bother to reproduce the PDF and Audio file URLs here.
    Last edited: Mar 8, 2012
  2. jcsd
  3. Mar 8, 2012 #2


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    POSSIBLE PIRSA CANDIDATES (just a sample, see the PIRSA QG series for others):

    PIRSA:12020088 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Fractal Space-times Under the Microscope: a RG View on Monte Carlo Data
    Speaker(s): Frank Saueressig
    Abstract: The emergence of fractal features in the microscopic structure of space-time is a common theme in many approaches to quantum gravity. In particular the spectral dimension, which measures the return probability of a fictitious diffusion process on space-time, provides a valuable probe which is easily... read more
    Date: 15/02/2012 - 4:00 pm
    URL: http://pirsa.org/12020088/ Share:

    PIRSA:12020096 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Continuous Formulation of the Loop Quantum Gravity Phase Space
    Speaker(s): Jonathan Ziprick
    Abstract: We relate the discrete classical phase space of loop gravity to the continuous phase space of general relativity. Our construction shows that the flux variables do not label a unique geometry, but rather a class of gauge-equivalent geometries. We resolve the tension between the loop gravity geometri... read more
    Date: 01/02/2012 - 4:00 pm
    URL: http://pirsa.org/12020096/ Share:

    PIRSA:12010115 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Scalar Perturbations in Loop Quantum Cosmology
    Speaker(s): Edward Wilson-Ewing
    Abstract: We study the dynamics of the scalar modes of linear perturbations around a flat, homogeneous and isotropic background in loop quantum cosmology.
    Date: 18/01/2012 - 4:00 pm
    URL: http://pirsa.org/12010115/ Share:

    PIRSA:12010131 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Group Field Theory and Simplicial Path Integrals
    Speaker(s): Aristide Baratin
    Abstract: Group field theories show up as a higher dimensional generalization of matrix models in background independent approaches to quantum gravity.
    Their Feynman expansion generates simplicial complexes of all topologies weighted by spin foam amplitudes.
    In this talk, we will present a dual formulat... read more
    Date: 11/01/2012 - 4:00 pm
    URL: http://pirsa.org/12010131/ Share:

    PIRSA:11120050 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Canonical Time Evolution in Simplicial Gravity
    Speaker(s): Philipp Hoehn
    Date: 07/12/2011 - 4:00 pm
    URL: http://pirsa.org/11120050/ Share:

    PIRSA:11120047 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Chern-Simons Theory, Vassiliev- Kontsevich Invariant, and Spinfoam Quantum Gravity
    Speaker(s): Muxin Han
    Abstract: We construct the q-deformed spinfoam vertex amplitude using Chern-Simons theory on the boundary 3-sphere of the 4-simplex. The rigorous definition involves the construction of Vassiliev-Kontsevich invariant for trivalent knot graph. Under the semiclassical asymptotics, the q-deformed spinfoam amplit... read more
    Date: 01/12/2011 - 10:30 am
    URL: http://pirsa.org/11120047/ Share:

    PIRSA:11110081 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Towards Loop Quantum Supergravity and its Applications
    Speaker(s): Norbert Bodendorfer
    Abstract: This talk will deal with a new connection formulation for higher-dimensional (Super)gravity theories and its applications. We will start by reviewing the basic ideas of loop quantum gravity. Next, the derivation of the new connection formulation will be discussed and it will be shown that the quanti... read more
    Date: 16/11/2011 - 4:00 pm
    URL: http://pirsa.org/11110081/ Share:

    PIRSA:11090125 ( Flash Presentation , MP4 Low Res , MP3 , PDF ) Which Format?
    Loop Gravity as the Dynamics of Topological Defects
    Speaker(s): Eugenio Bianchi
    Abstract: A charged particle can detect the presence of a magnetic field confined into a solenoid. The strength of the effect depends only on the phase shift experienced by the particle's wave function, as dictated by the Wilson loop of the Maxwell connection around the solenoid. In this seminar I'll show tha... read more
    Date: 21/09/2011 - 4:00 pm
    URL: http://pirsa.org/11090125/ Share:

    PIRSA has quite a few other interesting recent (since 1 September 2011) talks. This is just a limited sample. Please check out http://pirsa.org/S005 (select term="all" and year="all") to find others in their QG series.
    I need a place to stash this link, before I lose track of it again:
    This is a window on QG (and other) postdoc openings and offers.
    Here's a sample of some earlier (Summer 2010) recorded QG talks, not candidates because not recent.
    Sabine Hossenfelder's Experimental Search for Quantum Gravity workshop in Stockholm. Video files must be downloaded before you can play them, takes a few minutes
    Last edited: Mar 8, 2012
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