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Strings, branes and higher-spin gauge fields

Objective

String Theory is a framework for the fundamental interactions that replaces the elementary particles with extended objects, thus providing a successful perturbative description of the gravitational interaction that is free of the usual ultraviolet divergences of field theories and includes a finite number of mass less fields of spin less than or equal to 2. This setting, however, is incomplete, and the inclusion of non-perturbative effects requires additional extended objects (branes) of different dimensions. Some of the participants pioneered a number of aspects related to strings and to these extended objects. Duality relations (together with super-symmetry) simplify this complicated picture to some extent, linking the different ten-dimensional super string theories to one another and to an elusive 11-dimensional theory provisionally called M-theory, whose low-energy dynamics is governed by the super gravity model of Cremmer, Julia and Scherk. Some of the participants are directly responsible for the beautiful picture of string dualities in ten and eleven dimensions. This proposal aims at achieving a better understanding of String/M-theory dynamics, and in particular at elucidating the dynamics of higher-spin gauge fields. Some of our main research tasks are related to the extension of the known results for totally symmetric higher-spin gauge fields to the case of mixed symmetry and to the investigation of a number of other related topics, ranging from generalizations of the AdS/CFT correspondence, to PP-wave background geometries with nonzero fluxes of Ramond-Ramond fields and non-commutative Yang-Mills theories. The dynamics of open-string vacua with and without super symmetry, the investigation of their stability and of the corresponding quantum corrections and the dynamics of massive string modes will also be thoroughly investigated, by both space-time and world-sheet techniques. All the initial tasks we have listed are very likely to be achieved within the proposed periods, and will provide a sound basis to move toward the following ones. The other subtasks, and the very lines of the corresponding research, are likely to require the development of new techniques, and in some cases are less likely to be brought to full completion. The corresponding developments can only be partly foreseen at this stage, but are likely to allow also interesting applications to a number of related problems in Quantum Field Theory.

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Coordinator

Universita' di Roma "Tor Vergata"

Address

Via Della Ricerca Scientifica 1
00133 Roma

Italy

Administrative Contact

Augusto SAGNOTTI (Professor)

Participants (14)

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CNRS/Ecole Politechnique

France

Chalmers University of Technology

Sweden

Imperial College

United Kingdom

Institute for Theoretical and Experimental Physics

Russia

Lebedev Physical Institute

Russia

Max-Planck-Institut fur Gravitationsphysik

Germany

Physics Humboldt-University

Germany

Steklov Mathematical Institute

Russia

Tomsk State Pedagogical University

Russia

UNIVERSITY OF PATRAS

Greece

UPPSALA UNIVERSITY

Sweden

University of Crete

Greece

Utrecht University

Netherlands

Yerevan Physics Institute

Armenia

Project information

Grant agreement ID: INTAS 2003-51-6346

  • Start date

    1 November 2004

  • End date

    31 October 2007

Funded under:

IC-INTAS

Coordinated by:

Universita' di Roma "Tor Vergata"

Italy