A5039462897- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Advanced Topics in Algebra
- Algebraic structures and combinatorial models
- Advanced Combinatorial Mathematics
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Geometry and complex manifolds
- Quantum chaos and dynamical systems
- Advanced NMR Techniques and Applications
- Cosmology and Gravitation Theories
- Quantum Mechanics and Non-Hermitian Physics
- Topological and Geometric Data Analysis
- Quantum, superfluid, helium dynamics
- Sphingolipid Metabolism and Signaling
- Homotopy and Cohomology in Algebraic Topology
- Atomic and Subatomic Physics Research
Instituto Superior Técnico
2009-2024
University of Lisbon
2009-2023
Consejo Superior de Investigaciones Científicas
2012
We study a supersymmetric version of the seesaw mechanism type-III. The model consists MSSM particle content plus three copies 24 superfields. fermionic part SU(2) triplet contained in is responsible for type-III seesaw, which used to explain observed neutrino masses and mixings. Complete are introduced maintain gauge coupling unification. These additional states change beta functions couplings above scale. Using mSUGRA boundary conditions we calculate resulting mass spectra at electro-weak...
We propose an ${A}_{4}$ flavor-symmetric $\mathrm{SU}(3)\ensuremath{\bigotimes}\mathrm{SU}(2)\ensuremath{\bigotimes}\mathrm{U}(1)$ seesaw model where lepton number is broken spontaneously. A consistent two-zero texture pattern of neutrino masses and mixing emerges from the interplay type-I type-II contributions, with important phenomenological predictions. show that, if Majoron becomes massive, such scenario provides a viable candidate for decaying dark matter, cosmic microwave background...
We calculate the relic density of lightest neutralino in a supersymmetric seesaw type-II (``triplet seesaw'') model with minimal supergravity boundary conditions at grand unified theory (GUT) scale. The presence triplet below GUT scale, required to explain measured neutrino data this setup, leads characteristic deformation sparticle spectrum respect pure (mSUGRA) expectations, affecting calculated dark matter (DM) density. discuss how DM allowed regions $({m}_{0},{M}_{1/2})$ plane change as...
The main goals of the first "Workshop on FLAvor SYmmetries and consequences in accelerators cosmology" (FLASY) was to summarize theoretical status flavor symmetries, bringing together young researchers field stimulate discussions new collaborations, with aim investigating possible physics scenarios be tested at LHC, as well future neutrino, cosmology experiments dark matter searches.
We consider a model for topological recursion based on the Hopf Algebra of planar binary trees Loday and Ronco. show that extending this by identifying pairs nearest neighbor leaves producing in way graphs with loops we obtain full formula Eynard Orantin.
We study the Maslov correction to semiclassical states by using a Kähler regularized BKS pairing map from energy representation Schrödinger representation. For general states, existence of this regularization is based on recently found families polarizations degenerating singular real and corresponding special geodesic rays in space metrics. In case one-dimensional harmonic oscillator, we show that correct phases associated with caustic points projection Lagrangian curves configuration are...
We calculate the relic density of lightest neutralino in a supersymmetric seesaw type-II (triplet seesaw) model with minimal supergravity boundary conditions at GUT scale. The presence triplet below scale, required to explain measured neutrino data this setup, leads characteristic deformation sparticle spectrum respect pure mSugra expectations, affecting calculated dark matter (DM) density. discuss how DM allowed regions (m0,M1/2) plane change as function (type-II) also compare constraints...
We study the Maslov correction to semiclassical states by using a K\"ahler regularized BKS pairing map from energy representation Schr\"odinger representation. For general states, existence of this regularization is based on recently found families polarizations degenerating singular real and corresponding special geodesic rays in space metrics. In case one-dimensional harmonic oscillator, we show that correct phases associated with caustic points projection Lagrangian curves configuration...
Abstract We propose a quantization algebra of the Loday-Ronco Hopf $k[Y^\infty]$, based on Topological Recursion formula Eynard and Orantin. have shown in previous works that planar binary trees is space solutions for genus 0 version Recursion, an extension Loday Ronco as to include some new graphs with loops correct setting find solution arbitrary genus. Here we show this $k[Y^\infty]_h$ still can be seen sense made precise text trees, sub-algebra $\mathcal{A}^h_{\text{TopRec}}\subset...
We first review our previous work arxiv:1503.02993 [math-ph] where we considered a model for topological recursion based on the Hopf Algebra of planar binary trees Loday and Ronco showed that extending this by identifying pairs nearest neighbor leaves thus producing graphs with loops obtain full formula Eynard Orantin. Then discuss algebraic structure spaces correlation functions in g = 0 > 0. By taking classical quantum product respectively endow both ring structure. This is an extended...
We propose a quantization algebra of the Loday-Ronco Hopf $k[Y^\infty]$, based on Topological Recursion formula Eynard and Orantin. have shown in previous works that planar binary trees is space solutions for genus 0 version Recursion, an extension Loday Ronco as to include some new graphs with loops correct setting find solution arbitrary genus. Here we show this $k[Y^\infty]_h$ still can be seen sense made precise text trees, $\mathcal{A}^h_{\text{TopRec}}$ subalgebra quotient...