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Saturday, January 25

  1. 12:07 pm

Saturday, November 24

  1. page space.menu edited [[include component="pageList" component="navigation" homeAtTop="true&q…
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    6:00 pm

Monday, March 19

  1. page References edited ... for the field theory of the Bose Hubbard model (by Bhaseen, Green, and Sondhi). File of the t…
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    for the field theory of the Bose Hubbard model (by Bhaseen, Green, and Sondhi).
    File of the talk: http://qpt.physics.harvard.edu/talks/kitp_adscmt.pdf
    Non-Fermi liquids and& emergent quantum
    Hong Liu
    My talk was based on the following papers
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    Giorgini, Pitaevskii and Stringari, Rev. Mod. Phys. 80, 1215 (2008) (mostly many-body aspects)
    PDF file of my talk: kitp09-son.pdf
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    fields in condensed matter systemsCMT
    Cenke Xu
    The whole philosophy is that, in condensed matter systems at high energy there is no gauge symmetry, but at low energy the local constraint imposed energetically will lead to gauge symmetries. This philophy is summarized as LCGGS i.e. Local Constraints Generate Gauge Symmetries. This is how we obtain all the dynamical gauge field in condensed matter systems.
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    Critical Spin Liquid with Spinon Fermi Surface
    Sung-Sik Lee
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    talk were:
    http://arXiv.org/pdf/hep-ph/0405053, see in particular the discussion around pages 3-5.
    http://arXiv.org/pdf/hep-ph/0512309, this is the paper with the full story, in the QCD context.
    There is also a distilled (perhaps over-distilled) version of this story on pages 27-29 of http://arXiv.org/pdf/0709.4635, which is a big review paper that thomas schafer and krishna rajagopal are coauthors of.
    Holography and& Dynamical Critical
    Michael Mulligan
    In my talk, I discussed recent work on gravity duals to field theories with dynamical critical exponent different from unity. I began by introducing the Lifshitz field theory in the context of quantum dimer models. I then discussed candidate gravity duals to anisotropic fixed points, and then described the computation of a certain two-point correlation function and holographic RG flow in these candidate spacetimes. I concluded with an overview of more recent work: (1) gravity duals to anisotropic field theories at finite temperature, (2) a z=2 gauge theory in 2+1 dimensions, (3) entanglement entropy in these spacetimes, and (4) string theory embeddings. Below are references for various parts of my talk.
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    string embedding of anisotropic spacetime
    http://arxiv.org/abs/0905.0688
    A Flavor SuperconductorFlavor Superconductors from String
    Johanna Erdmenger
    I presented a holographic superconductor for which the field theory Lagrangian in 3+1 dimensions is explicitly known, and for which there is a stringy picture of the condensation process. This model arises from embedding two coincident D7 branes into the 10-dimensional AdS black hole geometry. This amounts to adding degrees of freedom in the fundamental representation of the gauge group to the original N=4 Super Yang-Mills theory. The black hole background puts the field theory at finite temperature. Moreover, an SU(2) isospin chemical potential and the corresponding density are turned on by considering a non-trivial gauge field in the Dirac-Born-Infeld action for the two coincident D7 branes.
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    Excellent review articles of entanglement entropy in QFT
    are recently written by Calabrese and Cardy (for CFTs):
    http://arxiv.org/abs/0905.4013 andhttp://arxiv.org/abs/0905.4013and by Casini
    http://arxiv.org/abs/0905.2562
    Its application to confinement/deconfinement transition can be found in
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    has been constructed in
    http://arxiv.org/abs/0905.0688 whose type IIB background has been motivated by a string dual of fractional quantum Hall effect based on a D3-D7 system in http://arxiv.org/abs/0901.0924
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    dual of the O(4) vector
    Most of what was discussed in the talk appears (in greater detail) in this paper. An important precursor of these results is the paper of Alicea et. al. A cool picture "illustrating" the duality can be found here.

    (view changes)
    1:59 pm

Sunday, October 24

  1. 5:51 am

Tuesday, June 1

  1. 1:56 pm

Monday, October 19

  1. 6:06 pm

Friday, July 24

  1. page Talks & Discussions edited ... Tadashi Takayanagi Holographic entanglement entropy References 4pm MSR ... Mike Hermel…
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    Tadashi Takayanagi
    Holographic entanglement entropy
    References
    4pm
    MSR
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    Mike Hermele
    Monopoles and the fermionic dual of the O(4) vector model
    References
    Fri, Jul 24
    12 noon
    (view changes)
    3:54 pm

Thursday, July 23

  1. page Social Events edited ... Mike Hermele (car, can take 4) Matthew Roberts Eduardo Fradkin (need a ride) Soccer Frida…
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    Mike Hermele (car, can take 4)
    Matthew Roberts
    Eduardo Fradkin (need a ride)
    Soccer Friday @ 6pm.
    On the grass outside the chemistry department.
    (view changes)
    6:08 pm
  2. page Social Events edited ... Victor Gurarie Mike Hermele (car, can take 4) Matthew Roberts Soccer Friday @ 6pm. On th…
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    Victor Gurarie
    Mike Hermele (car, can take 4)
    Matthew Roberts
    Soccer Friday @ 6pm.
    On the grass outside the chemistry department.
    (view changes)
  3. page References edited ... has been constructed in http://arxiv.org/abs/0905.0688 whose type IIB background has been mot…
    ...
    has been constructed in
    http://arxiv.org/abs/0905.0688 whose type IIB background has been motivated by a string dual of fractional quantum Hall effect based on a D3-D7 system in http://arxiv.org/abs/0901.0924
    Fermionic dual of the O(4) vector model
    Most of what was discussed in the talk appears (in greater detail) in this paper. An important precursor of these results is the paper of Alicea et. al. A cool picture "illustrating" the duality can be found here.

    (view changes)
    5:53 pm

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