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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.

Coordinator

Universita' di Roma "Tor Vergata"
Address
Via Della Ricerca Scientifica 1
00133 Roma
Italy

Participants (14)

CNRS/Ecole Politechnique
France
Address
Route De Saclay 1
91128 Palaiseau
Chalmers University of Technology
Sweden
Address

S- 412 96 Goteborg
Imperial College
United Kingdom
Address
Prince Consort Road 1
SW7 2BZ London
Institute for Theoretical and Experimental Physics
Russia
Address
Bol'shaya Cheremushkinskaya 25
117259 Moscow
Lebedev Physical Institute
Russia
Address
Leninsky Prospect 53
119991 Moscow
Max-Planck-Institut fur Gravitationsphysik
Germany
Address
Am Muhlenberg 5
14476 Golm
Physics Humboldt-University
Germany
Address
Newtonstrasse 15
12489 Berlin
Steklov Mathematical Institute
Russia
Address
Gubkina St. 8
117966 Moscow
Tomsk State Pedagogical University
Russia
Address
Komsomolsky Prospect 75
634041 Tomsk
UNIVERSITY OF PATRAS
Greece
Address

Patras
UPPSALA UNIVERSITY
Sweden
Address

Uppsala
University of Crete
Greece
Address

71003 Heraklion
Utrecht University
Netherlands
Address
Princetonplein 5
3508 TA Utrecht
Yerevan Physics Institute
Armenia
Address
Br.alikhanian St. 2
375036 Yerevan