Phenomenology 2014 Symposium

Session

Cosmology I

5 May 2014, 14:00

University of Pittsburgh

Conveners

Cosmology I

• Hiren Patel

183. Theory of CMB Polarization

Arthur Kosowsky (University of Pittsburgh)

05/05/2014, 14:00

207. Higgs Inflation in Light of BICEP2

Jessica Cook (Arizona State)

05/05/2014, 14:30

BICEP2 requires new physics to enter into the Higgs effective potential before its instability scale. A large scale for inflation means the Higgs, even if the Higgs isn't the inflaton, should have had fluctuations on order of the Hubble parameter during inflation, and using the ordinary standard model effective potential for the Higgs, this should have pushed the Higgs into it's higher scale...

159. Cosmological Consequences of Massive Gravity

Dr Tina Kahniashvili (Carnegie Mellon University)

05/05/2014, 14:45

The cosmological consequences of the deRham-Gabadadze-Tolley (dRGT) massive gravity model will be discussed. In the framework of dRGT model the today accelerated expansion of the universe is governed by a non-zero mass of graviton that is determined by the today value of the Hubble parameter $m_g \sim H_)$. In order to recover the isotropic background...

89. Heavy Gravitino and Split SUSY in the Light of BICEP2

Ogan Ozsoy (S)

05/05/2014, 15:00

**High-scale supersymmetry (SUSY) with a split spectrum has become increasingly interesting given the current experimental results. A SUSY scale above the weak scale could be naturally associated with a heavy unstable gravitino, whose decays populate the dark matter (DM) particles. In the mini-split scenario with gravitino at about the PeV scale and the lightest TeV scale neutralino being...

97. Constraints on Supersymmetric Cosmological Inflation Model

Mayukh Gangopadhyay (University of Notre Dame du Lac)

05/05/2014, 15:15

Cosmological Inflation is a theory ad hoc from Particle Physics in Cosmology. It is a very important inclusion in early universe study and became one of the very important and open topic of research in last three decades. In my talk I will go through some of the well known models of cosmological inflation and what is the chance of survival of these models as we test them with observational...

124. Luminogenesis RG Flow

Kevin Ludwick (U)

05/05/2014, 15:30

Using constraints from Planck and BICEP2 on inflation models, and renormalization-group flow, we present constraints on the mass of dark-matter particles in a unification model with the gauge group $SU(3) \times SU(6) \times U(1)$, which breaks to the standard model with an extra gauge group for dark matter when the inflaton rolls into the true vacuum. In this model, inflaton decay gives rise...

62. Tensor to scalar ratio and large scale power suppression from pre-slow roll initial conditions

Louis Lello (University of Pittsburgh)

05/05/2014, 15:45

We study the corrections to the power spectra of curvature and tensor perturbations and the tensor-to-scalar ratio $r$ in single field slow roll inflation with standard kinetic term due to initial conditions imprinted by a ``fast-roll'' stage prior to slow roll. For a wide range of initial inflaton kinetic energy, this stage lasts only a few e-folds and merges smoothly with slow-roll...