Fortschritte der Physik

Cover image for Vol. 58 Issue 11‐12

November 2010

Volume 58, Issue 11-12

Pages 1021–1250

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Original Papers
    1. Cover Picture: Fortschritte der Physik 11–12 / 2010

      Article first published online: 11 OCT 2010 | DOI: 10.1002/prop.201090005

      Thumbnail image of graphical abstract

      The cover page of 2010 shows an abstract picture of the so-called string landscape. It is known for some time that, although string theory seems to be unique in ten or eleven space-time dimensions, a vast number of solutions pops out upon compactification to lower dimensions, in particular to fours space-time dimensions.

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Original Papers
    1. Contents: Fortschritte der Physik 11–12 / 2010 (pages 1021–1022)

      Article first published online: 11 OCT 2010 | DOI: 10.1002/prop.201010421

  3. Original Papers

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Original Papers
    1. Wrapping effects in supersymmetric gauge theories (pages 1023–1121)

      F. Fiamberti

      Article first published online: 2 JUL 2010 | DOI: 10.1002/prop.201000065

      Thumbnail image of graphical abstract

      Several perturbative computations of finite-size effects, performed on the gauge side of the AdS/CFT correspondence by means of superspace techniques, are presented. First, wrapping effects are analyzed in the standard N = 4 theory, by means of the calculation of the four-loop anomalous dimension of the Konishi operator. Then, a similar computation at five loops is described. Afterwards, finite-size effects are studied in the β-deformed case, where thanks to the reduced number of supersymmetries the simpler class of singleimpurity operators can be considered, so that the leading corrections to the anomalous dimensions at generic order can be reduced to the computation of a class of integrals. Explicit results are given up to eleven loops. A further chapter is dedicated to the computation of the leading finite-size effects on operators dual to open strings. In the end, some comments are made and proposals for future developments are discussed.

    2. Gauge/gravity duality applied to condensed matter systems (pages 1123–1250)

      M. Ammon

      Article first published online: 11 OCT 2010 | DOI: 10.1002/prop.201000080

      Thumbnail image of graphical abstract

      In this review we investigate phenomena of strongly-coupled quantum critical theories, which also appear in condensed matter systems. Using the AdS/CFT correspondence, a technique motivated by string theory, the strongly-coupled scale-invariant theories can be related to gravity theories at weak coupling. Within this framework we study the holographic description of superconductors and the emerging fermi surface of strongly coupled fermions. We also calculate the conductivity of alternating currents and determine the direct current conductivity for (non-) relativistic systems beyond linear response. Since the explicit string theory construction in terms of probe branes embedded in type IIB supergravity is explicitly known, we are able to identify the dual operators on the field theory side and can compare the effects at weak and strong coupling.

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