Format results
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Generalized Modified Gravity Models: ghosts and dynamical bounds
Antonio De Felice - Yukawa Institute for Theoretical Physics
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Leading Log Solution for Yukawa During Inflation
Richard Woodard - University of Florida
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Dark matter: from the early Universe to the Milky Way
Tim Bedding - University of Sydney
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Compactification Effects in D-brane Inflation
Liam McAllister - Cornell University
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Cosmological Landscape From Nothing: Some Like It Hot
Andrei Barvinski - P.N. Lebedev Physical Institute of the Russian Academy of Sciences
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A-term inflation
Rouzbeh Allahverdi - University of New Mexico
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M-theory Signatures in the CMB
Amjad Ashoorioon - Institute for Research in Fundamental Sciences (IPM)
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Generalized Modified Gravity Models: ghosts and dynamical bounds
Antonio De Felice - Yukawa Institute for Theoretical Physics
Modified gravity models seem to have classical instabilities, ghosts degrees of freedom and superluminal modes. Besides these constraints new dynamical bounds have found to be typical of these models. The cosmological nature of all these constraints is discussed. -
The nu physics in the dark sector
Existence of dark energy and nonzero nu mass are two most exciting discoveries of recent years. More excitingly, the similarity between the energy scales of these two raise the question: "Are they related?" I will explore how such connection could be there in nature and its cosmological consequences… -
Is Brane Inflation Eternal?
It will be shown that eternal inflation of the random walk type is generically absent in the brane inflationary scenario. Eternal inflation will be analysed both in the context of KKLMMT and the DBI inflationary models. A Langevin analysis will be employed for a more careful treatment. The DBI… -
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Dark matter: from the early Universe to the Milky Way
Tim Bedding - University of Sydney
The initial conditions for structure formation, and hence the dark matter distribution on sub-galactic scales, depend on the microphysics of the dark matter in the early Universe. I will focus on WIMPs and explain how collisional damping and free-streaming erase perturbations on comoving scales k>… -
Studying Supersymmetry With Dark Matter Experiments
If low-scale supersymmetry exists in nature, then it it will be very likely that a number of superpartners will be discovered at the LHC. It is also very likely, however, that much of the supersymmetric spectrum will go unobserved, leaving many important holes in our understanding of the TeV scale… -
Compactification Effects in D-brane Inflation
Liam McAllister - Cornell University
Realizations of inflation in string theory hold the promise of connecting the theory to observational tests, and at the same time providing new insights for field theory models of inflation. I will report on progress towards realizing inflation on D-branes in type IIB string theory. Moduli… -
Cosmological Landscape From Nothing: Some Like It Hot
Andrei Barvinski - P.N. Lebedev Physical Institute of the Russian Academy of Sciences
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A-term inflation
Rouzbeh Allahverdi - University of New Mexico
I argue that all necessary ingredients for successful inflation are present in the minimal supersymmetric standard model (MSSM). The potential for the supersymmetric flat directions (which can be viewed as moduli near points of enhanced symmetry) generically has metastable minima at large field… -
M-theory Signatures in the CMB
Amjad Ashoorioon - Institute for Research in Fundamental Sciences (IPM)
I will demonstrate how one can realize Cascade inflation in M-theory. Cascade inflation is a realization of assisted inflation which is driven by non-perturbative interactions of N M5-branes. Its power spectrum possesses three distinctive signatures: a decisive power suppression at small scales… -
On graviton production by moving branes
In this talk I will discuss some aspects of graviton production by moving branes. After a brief introduction to braneworld cosmology I will focus on braneworlds in a five-dimensional bulk, where cosmological expansion is mimicked by motion through AdS_5. The moving brane acts naturally as a time…