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String and supersymmetric theories of fundamental intractions

English title String and supersymmetric theories of fundamental interactions
Applicant Derendinger Jean-Pierre
Number 132545
Funding scheme Project funding
Research institution Institut für Theoretische Physik Universität Bern
Institution of higher education University of Berne - BE
Main discipline Theoretical Physics
Start/End 01.10.2010 - 30.09.2012
Approved amount 237'409.00
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Keywords (6)

Unified theories; Supersymmetric field theories; Superstring theories; Supersymmetry; high-energy theory; particle theory

Lay Summary (English)

Lead
Lay summary
Particle physics theory in the last decades has been dominated by two broad lines of research. Firstly, the exploration of the Standard Model of strong and electroweak interactions, which has been so successfully confronted with experiments at all available energies. This exploration should be almost completed when results from LHC will test symmetry breaking and mass generation (and prove or disprove the existence of the Higgs boson). The second line of research aims at developing conceptual and theoretical frameworks for a better understanding of the foundations of the Standard Model and a more unified description of all particle interactions, including gravitation. The main conceptual tools used in this program are supersymmetry, unified symmetries, superstring theories and small extra dimensions. The present research project studies some aspects of supersymmetric field theories and superstring compactifications. Supersymmetry is used in unified descriptions of particle interactions mostly because it is an extension of space-time (Poincaré) symmetries linking bosons and fermions and because it helps to understand how scalar fields (like the Higgs boson field) could remain light with respect to heavier scales of particle physics (like the Planck scale). It is also present in superstring theories. In addition, supersymmetric quantum field theories have many interesting properties which give access to their nonperturbative regime. It is then an important tool in the study of strongly-coupled field theories. String theories have been intensively developed with three main applications in view. Firstly, as a candidate unified quantum theory of all fundamental particle interactions, including gravitation. Secondly, as a tool to study nonperturbative aspects of gauge field theories (via gauge-gravity dualities). Thirdly, as a theoretical framework for studying quantum gravitation. Within this research project, we intend to study the following problems. Firstly, the development of superstring solutions with four-dimensional spacetime symmetry using the effective gauged supergravity approach will be continued by considering non-geometric backgrounds and, when available, their world-sheet description. Secondly, various compactifications with smooth dependence on the anti-de Sitter curvature witll be described. Secondly, our description of D-brane (Born-Infeld) actions with nonlinear N=2 supersymmetry will be completed, in the framework of local supersmmetry. Thirdly, the moduli space of several chiral N=1 supersymmetric gauge theories, which defines the quantum vacuum manifold of the theory, will be studied using algebraic and superspace methods.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
N=2 supersymmetry breaking at two different scales
Antoniadis Ignatios, Derendinger Jean-Pierre, Jacot Jean-Claude (2012), N=2 supersymmetry breaking at two different scales, in Nucl.Phys., B863, 471-494.
The Hypermultiplet with Heisenberg Isometry in N=2 Global and Local Supersymmetry
Ambrosetti Nicola, Antoniadis Ignatios, Derendinger Jean-Pierre, Tziveloglou Pantelis (2011), The Hypermultiplet with Heisenberg Isometry in N=2 Global and Local Supersymmetry, in JHEP, 1106, 139-162.
Double Field Theory and N=4 Gauged Supergravity
Geissbuhler David (2011), Double Field Theory and N=4 Gauged Supergravity, in JHEP, 1111, 116-140.
Holographic Renormalization for z=2 Lifshitz Space-Times from AdS
Chemissany Wissam, Geissbuhler David, Hartong Jelle, Rollier Blaise, Holographic Renormalization for z=2 Lifshitz Space-Times from AdS, in Classical and Quantum Gravity.
On Supercurrent Superfields and Fayet-Iliopoulos Terms in N=1 Gauge Theories
Arnold Daniel, Derendinger Jean-Pierre, Hartong Jelle, On Supercurrent Superfields and Fayet-Iliopoulos Terms in N=1 Gauge Theories, in Nucl. Phys., B 867, 370-393.

Collaboration

Group / person Country
Types of collaboration
Ecole Polytechnique, Palaiseau France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
Ecole Normale Supérieure, Paris France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
CERN, Genf Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
Université Pierre et Marie Curie, Paris France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
42nd Summer Institute „Cordes, Particules et l’Univers“ 20.08.2012 Paris, Frankreich
SUSY 2012 13.08.2012 Beijing, China
International Conference on High-Energy Physics (ICHEP 2012) 04.07.2012 Melbourne, Australien
Conférence Inaugurale de l’Institut de Physique Théorique Philippe Meyer 30.01.2012 Paris, Frankreich
XVIIth European Workshop on String Theory 2011 05.09.2011 Padova, Italien
41th Summer Institute „Cordes, Particules et l’Univers“ 21.08.2011 Paris, Frankreich
Strings 2011 27.06.2011 Uppsala, Schweden
International School on Subnuclear Physics (49th course) 24.06.2011 Erice, Italien
Planck 2011 29.05.2011 Lissabon, Portugal
Workshop „Gauge Theories, Strings and Geometry“ 17.05.2011 Brüssel, Belgien
CERN Winter School on Supergravity, Strings and Gauge Theory 24.01.2011 CERN, Genf


Associated projects

Number Title Start Funding scheme
144426 String compactifications and supersymmetry breaking patterns 01.10.2012 Project funding
121915 Strings and supersymmetric theories of fundamental interactions 01.10.2008 Project funding

Abstract

Study of the microscopic, worldsheet structure of string compactifications on non-geometric backgrounds : chiral bosons, Lorentz and conformal invariance, space-time field equations and doubled field theory. Reformulation of these worldsheet theories as conformal field theories. General description of non-geometric string backgrounds using gaugings of N=4 supergravity theories. Study of classes of string compactifications on curved internal manifolds. In the context of orientifold compactifications of type II strings, construction and study of supersymmetric brane Dirac-Born-Infeld Lagrangians with a second nonlinear supersymmetry : scalar potential and stability equations of the string configuration.Derivation of the chiral ring and anomaly study of N=1 supersymmetric gauge theories with maximally chiral matter supermultiplets.
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