A5020667314- Cosmology and Gravitation Theories
- Quantum and electron transport phenomena
- Black Holes and Theoretical Physics
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Magnetic Field Sensors Techniques
- Noncommutative and Quantum Gravity Theories
- Surface and Thin Film Phenomena
- High-Energy Particle Collisions Research
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor materials and devices
- Physics of Superconductivity and Magnetism
- Theoretical and Computational Physics
Universität Hamburg
2008-2013
Leibniz University Hannover
2011
The Abdus Salam International Centre for Theoretical Physics (ICTP)
2006-2010
Instituto de Cibernética Matemática y Física
2003
A bstract We explicitly construct all supersymmetric flux vacua of a particular Calabi-Yau compactification type IIB string theory for small number carrying cycles and given D3-brane tadpole. The analysis is performed in the large complex structure region by using polynomial homotopy continuation method, which allows to find stationary points equations that characterize vacuum solutions. as function D3 tadpole agreement with statistical studies literature. calculate available tuning...
We derive the N = 1 effective action of heterotic string compactified on manifolds with SU(3) structure in presence background fluxes. use a Kaluza–Klein reduction and compute moduli dependence Kähler potential, gauge kinetic function superpotential entirely from fermionic terms reduced action.
We study compactifications of type IIA supergravity on six-dimensional manifolds with SU(2) structure and compute the low-energy effective action in terms non-trivial intrinsic torsion. The consistency gauged $ \mathcal{N} = 4 is established gauge group determined. Depending torsion, antisymmetric tensor fields can become massive.
It is shown how the electromagnetic response of two-dimensional electron gas under quantum Hall effect regime transforms sample impurities and defects in charge reservoirs that stabilize Hall-conductivity plateaus. The results determine basic dynamical origin singular properties localization occurrence obtained pioneering works Laughlin Joynt Prange by means a gauge invariance argument purely electronic analysis, respectively. common intuitive picture electrons moving along equipotential...
As it was suggested by previous works on a modified perturbation expansion for QCD, the possibility generation of large quark condensates in mass-less version theory is explored. For this purpose, firstly presented way well define Feynman diagrams at any number loops just employing dimensional regularization. After that, calculated zero and one loop corrections to effective potential indicate strong instability system under condensates. The also evaluated condensate dependence particular two...
It is shown how the electromagnetic response of 2DEG under Quantumm Hall Effect regime, chracterized by Chern-Simons topological action, transforms sample impurities and defects in charge reservoirs that stabilize conductivity plateaus. The results, determine basic dynamical origin singular properties localization occurrence QHE obtained pioneering works Laughlin Joynt Prange, means a gauge invariance argument purely electronic analysis, respectively. common picture electrons moving...