The 4th UniverseNet School - Frontiers of Particle Cosmology

Session

6 talks (Chair: Leandros PERIVOLAROPOULOS)

14 Sept 2010, 14:30

Lecce, Università del Salento

15. Mr. DEAK, Michal (IFT Madrid): Exclusive Higgs production consistent with MSSM baryogenesis

14/09/2010, 14:30

16. Mr. DALIANIS, Ioannis (ITP Warsaw): Cosmological Aspects of SUSY Breaking

14/09/2010, 14:45

Cosmological considerations of theories which promote a (false) metastable vacuum as the phenomenological viable one. Demonstration that quantum corrections and weakly coupled messenger-SUSY breaking sector can make the metastable vacuum, during thermal evolution, attractive. Remarks on gaugino and sfermion masses in these models. Also, inflationary dynamics and SUSY breaking - a different perspective.

18. Mr. MOOIJ, Sander (NIKHEF Amsterdam): Moduli Stabilization in SUGRA Hybrid Inflation

14/09/2010, 15:00

We study the supergravity hybrid inflation model of (arXiv:0902.2934 ) in the presence of a modulus field. The eta-problem is solved by a shift symmetry for the inflaton, which protects the inflaton mass even in the presence of the modulus field. Inflation is (nearly) unaffected by moduli stabilization, provided the scale of supersymmetry breaking in the post-inflation vacuum is small....

19. Mr. STEPHENS, Philip (Lancaster University): Improving Inflection Point inflation

14/09/2010, 15:15

I present some work on alleviating the fine tuning problem in inflection point inflation.

20. Mr. TAANILA, Olli (Helsinki Institute of Physics): A TeV-mass Curvaton

14/09/2010, 15:30

We consider a curvaton with a mass of 1 TeV and show that the constraints are not consistent with a purely quadratic potential. We then show that the only self-interaction consistent with all the constraints is of the form V_int = sigma^8/M^4. We also compute the values of non-Gaussianity parameters f_NL and g_NL.

21. Mr. WAGSTAFF, Jacques (Lancaster University): A Compelling Vector Curvaton Model without Instabilities

14/09/2010, 15:45

A vector curvaton model with a Maxwell kinetic term and varying kinetic function and mass during inflation is studied. It is shown that, if light until the end of inflation, the vector field can generate statistical anisotropy in the curvature perturbation spectrum and bispectrum, with the latter being predominantly anisotropic. If by the end of inflation the vector field becomes heavy, then...