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  • 1.
    Di Vecchia, Paolo
    et al.
    KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. University of Copenhagen, Denmark.
    Marotta, Raffaele
    Mojaza, Matin
    Soft Theorems from String Theory2016In: Fortschritte der Physik, ISSN 0015-8208, E-ISSN 1521-3978, Vol. 64, no 4-5, p. 389-393Article in journal (Refereed)
    Abstract [en]

    Soft behaviour of closed string amplitudes involving dilatons, gravitons and anti-symmetric tensors, is studied in the framework of bosonic string theory. The leading double soft limit of gluons is analysed as well, starting from scattering amplitudes computed in the open bosonic string. Field theory expressions are then obtained by sending the string tension to infinity. The presented results have been derived in the papers of Ref [1].

  • 2.
    Hoppe, Jens
    KTH, Superseded Departments, Mathematics.
    Asymptotic form of zero energy wave functions in supersymmetric matrix models2000In: Fortschritte der Physik, ISSN 0015-8208, E-ISSN 1521-3978, Vol. 48, no 1-3, p. 129-131Conference paper (Refereed)
  • 3. Wilzbach, Marco
    et al.
    Haase, Albrecht
    Schwarz, Michael
    Heine, Dennis
    Wicker, Kai
    Liu, Xiyuan
    Brenner, K-H
    Groth, Sönke
    Fernholz, Th
    Hessmo, Björn
    Physikalisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany.
    Detecting neutral atoms on an atom chip2006In: Fortschritte der Physik, ISSN 0015-8208, E-ISSN 1521-3978, Vol. 54, no 8-10, p. 746-764Article in journal (Refereed)
    Abstract [en]

    Detecting single atoms (qubits) is a key requirement for implementing quantum information processing on an atom chip. The detector should ideally be integrated on the chip. Here we present and compare different methods capable of detecting neutral atoms on an atom chip. After a short introduction to fluorescence and absorption detection we discuss cavity enhanced detection of single atoms. In particular we concentrate on optical fiber based detectors such as fiber cavities and tapered fiber dipole traps. We discuss the various constraints in building such detectors in detail along with the current implementations on atom chips. Results from experimental tests of fiber integration are also described. In addition we present a pilot experiment for atom detection using a concentric cavity to verify the required scaling.

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