A5039244785- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Noncommutative and Quantum Gravity Theories
- Nonlinear Waves and Solitons
- Geometry and complex manifolds
- Advanced Topics in Algebra
- Algebraic structures and combinatorial models
- Physics of Superconductivity and Magnetism
- High-Energy Particle Collisions Research
- Pulsars and Gravitational Waves Research
- Quantum Mechanics and Applications
- Advanced Mathematical Physics Problems
- Geometric Analysis and Curvature Flows
- RNA Research and Splicing
- Advanced Differential Geometry Research
- Quantum many-body systems
- Graph theory and applications
- Genomics and Chromatin Dynamics
- Theoretical and Computational Physics
- RNA and protein synthesis mechanisms
- Homotopy and Cohomology in Algebraic Topology
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Mechanics and Non-Hermitian Physics
University of Turin
1999-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2014-2025
Istituto Nazionale di Fisica Nucleare
1991-2019
Centre National de la Recherche Scientifique
2017
Laboratoire d'Annecy-le-Vieux de Physique Théorique
2017
Novo Nordisk (Denmark)
1994-1995
University of Copenhagen
1993
A bstract We study the non-perturbative properties of $ \mathcal{N}=2 super conformal field theories in four dimensions using localization techniques. In particular we consider SU(2) gauge theories, deformed by a generic ϵ -background, with fundamental flavors or one adjoint hypermultiplet. both cases explicitly compute first few instanton corrections to partition function and prepotential Nekrasov’s approach. These results allow us reconstruct exact expressions involving quasi-modular...
A bstract We investigate ϵ -deformed $ \mathcal{N}=2 superconformal gauge theories in four dimensions, focusing on the \mathcal{N}={2^{*}} and N f = 4 SU(2) cases. show how modular anomaly equation obeyed by deformed prepotential can be efficiently used to derive its non-perturbative expression starting from perturbative one. also that implies S-duality is implemented means of an exact Fourier transform even for arbitrary values deformation parameters, then we argue it possible,...
Abstract We define the framed DDF operators by introducing concept of local frames in usual formulation operators. In doing so it is possible to completely decouple from associated tachyon and show that they are good zero-dimensional conformal These DDFs allow for an explicit covariant general solution Virasoro constraints both on-shell off-shell which depends on a unique set tangent space lightcone polarizations. This since frame allows us embed $$SO(D-2)$$ <mml:math...
We compute directly in covariant formalism a variety of four point massive scalar amplitudes bosonic string with scalars up to level 10 and at least one tachyon. All computed are perfectly regular show no sign erratic behavior. give naive argument based on very simple model why this can reasonably be expected we check the explicit examples that intuition derived from is sensible. Furthermore discuss complications due null states (BRST exact states) actually computing spectrum how these...
Abstract We compute the irreps and their multiplicities of bosonic string spectrum up to level 10 we give explicitly on shell top lightcone states which make irreps. For three indexes all totally antisymmetric ones general recipe full It turns out that is quite efficient in building these low once are known. scalars vectors multiplicity 22 19 respectively. The first scalar at odd appears 11. non critical dimensions argue N there always transforming as tensors with $$s\ge \frac{1}{2} N$$...
A bstract We provide a compact expression for the generating function of correlators involving an arbitrary number bosonic open string DDF states. The explicit M states can then be obtained by differentiating this with respect to polarization tensors. depends on single and double complex integrals centered around punctures corresponding insertion points vertices real axis in upper half-plane. have explicitly evaluated these To check our results, we computed some massive scalars spin-2...
The F-theory background of four D7 branes in a type I′ orientifold was conjectured to be described by the Seiberg-Witten curve for superconformal SU(2) gauge theory with flavors. This relation explained considering this probe D3 brane, which supports realized as Sp(1). Here we explicitly compute non-perturbative corrections D7/D3 system due D-instantons. computation provides both quartic effective action on and quadratic brane; latter agrees F-theoretic prediction. obtained way is related...
We construct the complete superspace action ℒ of chiral D=10, N=2 supergravity. The self-duality condition on field strength F a 1 - 5 is derived as an equation motion in superspace. space-time restriction not supersymmetric, since does follow from variational equations. However, supersymmetry can be restored via introduction Lagrange multiplier term.
We study the N=1 supersymmetric G 2 gauge theories with N f flavors of quarks in fundamental vector representation. find dynamically generated superpotentials, smooth quantum moduli space, space additional mesons, nontrivial ir fixed points.