A5056098250- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Noncommutative and Quantum Gravity Theories
- Particle physics theoretical and experimental studies
- Algebraic structures and combinatorial models
- Advanced Topics in Algebra
- Nonlinear Waves and Solitons
- Quantum Chromodynamics and Particle Interactions
- Geometric Analysis and Curvature Flows
- Algebraic and Geometric Analysis
- Geometry and complex manifolds
- Quantum Mechanics and Non-Hermitian Physics
- Advanced Algebra and Geometry
- Pulsars and Gravitational Waves Research
- Homotopy and Cohomology in Algebraic Topology
- Quantum chaos and dynamical systems
- Mathematics and Applications
- Geophysics and Gravity Measurements
- Algebraic Geometry and Number Theory
- Matrix Theory and Algorithms
- Advanced Differential Geometry Research
- Advanced Operator Algebra Research
- Relativity and Gravitational Theory
- Geometric and Algebraic Topology
- Galaxies: Formation, Evolution, Phenomena
KU Leuven
2012-2024
University of California, Los Angeles
2010
Stanford University
1992-1998
European Organization for Nuclear Research
1982-1992
Centre National de la Recherche Scientifique
1984-1985
École Normale Supérieure - PSL
1984-1985
Laboratoire de Physique Théorique
1984
We identify a particularly simple class of supergravity models describing superconformal coupling matter to supergravity. In these models, which we call the canonical (CSS) kinetic terms in Jordan frame are canonical, and scalar potential is same as global theory. The pure part total action has local Poincare supersymmetry, whereas chiral vector multiplets coupled have larger symmetry. scale-free globally supersymmetric theories, such NMSSM with scale-invariant superpotential, can be...
In supersymmetric theories the mass of any state is bounded below by values some its charges. The corresponding bounds in case Schwarzschild ($M\ensuremath{\ge}0$) and Reissner-Nordstr\"om ($M\ensuremath{\ge}|q|$) black holes are known to coincide with requirement that naked singularities be absent. Here we investigate ${[U(1)]}^{2}$ charged dilaton this context. extreme solutions shown saturate supersymmetry bound $N=4$, $d=4$ supergravity, or dimensionally reduced superstring theory....
We discuss a generalized form of IIA/IIB supergravity depending onall R-R potentials C(p) (p = 0,1,...,9) as the effective field theory type superstring theory. For IIA case we explicitly break this democracy to either p⩽3 or p⩾5, which allows us write new bulk action that can be coupled N 1 supersymmetric brane actions.
The dynamics of a (super)particle near the horizon an extreme Reissner-Nordstrom black hole is shown to be governed by action that reduces (super)conformal mechanics model in limit large mass.
We investigate the production of gravitinos in a cosmological background. Gravitinos can be produced during preheating after inflation due to combined effect interactions with an oscillating field and absence conformal invariance. In order get insight into properties gravitino we reformulate phenomenological supergravity SU(2,2|1)-symmetric way. The Planck mass $F$ $D$ terms appear via gauge-fixed value superfield that call conformon. find general probability is not suppressed by small...
We present a complete explicit $N=1$, $d=4$ supergravity action in an arbitrary Jordan frame with nonminimal scalar-curvature coupling of the form $\ensuremath{\Phi}(z,\overline{z})R$. The is derived by suitably gauge fixing superconformal action. theory has modified K\"ahler geometry, and it exhibits significant dependence on function $\ensuremath{\Phi}(z,\overline{z})$ its derivatives over scalars, bosonic as well fermionic part Under certain simple conditions, scalar kinetic terms have...
We clarify the structure of N=1 supergravity in 1+3 dimensions with constant FI terms. The terms induce non-vanishing R-charges for fermions and superpotential. Therefore D-term inflation model has to be revisited. also investigate case so-called anomalous U(1) when a chiral superfield is shifted under U(1). In such case, context string theory, originate from derivative Kaehler potential they are inevitably field-dependent. This raises an issue stabilization relevant field applications...
The authors derive Poincare, de Sitter and conformal supersymmetry algebras, in all dimensions allowing Majorana spinors. They consider only minimal gradings (N=1), show that these always exist. A brief discussion of fermionic central charges is given.