Fortschritte der Physik

Cover image for Vol. 63 Issue 7-8

Editor: Dieter Lüst, Wolfgang Schleich (Co-Editor)

Impact Factor: 2.442

ISI Journal Citation Reports © Ranking: 2014: 17/78 (Physics Multidisciplinary)

Online ISSN: 1521-3978

Associated Title(s): Annalen der Physik

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AdS/CFT correspondence · black holes · conformal fields · cosmology · d-branes · gauge fields · gravity · Lie algebras · noncommutative geometry · quantum entanglement · quantum field theories · quantum gravity · quantum groups · quantum information · quantum physics · qubits · standard model · string theories · supergravity · supersymmetry ·

Recently Published Articles

  1. Closed tachyon solitons in type II string theory

    Iñaki García-Etxebarria, Miguel Montero and Angel M. Uranga

    Article first published online: 20 JUL 2015 | DOI: 10.1002/prop.201500029

    Type II theories can be described as the endpoint of closed string tachyon condensation in certain orbifolds of supercritical type 0 theories. In this paper, we study solitons of this closed string tachyon and analyze the nature of the resulting defects in critical type II theories. The solitons are classified by the real K-theory groups KO of bundles associated to pairs of supercritical dimensions. For real codimension 4 and 8, corresponding to inline image and inline image, the defects correspond to a gravitational instanton and a fundamental string, respectively. We apply these ideas to reinterpret the worldsheet GLSM, regarded as a supercritical theory on the ambient toric space with closed tachyon condensation onto the CY hypersurface, and use it to describe charged solitons under discrete isometries. We also suggest the possible applications of supercritical strings to the physical interpretation of the matrix factorization description of F-theory on singular spaces.

  2. Breaking E6 via trinification in F-theory

    M. Drissi El Bouzaidi and S. Nassiri

    Article first published online: 7 JUL 2015 | DOI: 10.1002/prop.201500030

    We consider E6 GUT model in F-theory approach where E6 is broken via trinification to the Standard Model (SM) gauge group using non-abelian fluxes. Including the gauge singlet wave function we found hierarchically small values for both the μ term as well as Dirac neutrino masses.

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    Issue Information: Fortschritte der Physik 7–8 / 2015

    Article first published online: 6 JUL 2015 | DOI: 10.1002/prop.201570013

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    Cover Picture: Fortschritte der Physik 7–8 / 2015

    Article first published online: 6 JUL 2015 | DOI: 10.1002/prop.201570012

    Thumbnail image of graphical abstract

    The cover page shows absorption images of four Bose-Einstein condensates generated consecutively during the nine seconds of free fall in a single launch of the catapult located at the bottom of the Bremen Drop Tower. The condensates were observed at different times (25, 50, 75 and 100 ms), illustrating the expansion of the wave-packet. This experiment was performed using in a miniaturized ultra-cold atom trap by the QUANTUS collaboration supported by the German Space Agency DLR. The graphics was designed by Jan Rudolph and Holger Ahlers from the group of Prof. Ernst Maria Rasel (Leibniz Universität Hannover).