Jason Kumar
(Texas A&M University)
30/07/2007, 16:30
Theoretical Models (String Theory and Formal Aspects of SUSY)
Parallel Talk
We introduce a novel mechanism for baryogenesis, in which mixed anomalies
between the hidden sector and $U(1)_{baryon}$ drive the baryon asymmetry.
We demonstrate that this mechanism occurs quite naturally in intersecting-
brane constructions of the Standard Model, and show that it solves some of the
theoretical difficulties faced in matching baryogenesis to experimental bounds.
We...
Louis Clavelli
(University of Alabama)
30/07/2007, 16:50
Theoretical Models (String Theory and Formal Aspects of SUSY)
Parallel Talk
String landscape ideas and the observation of a positive vacuum energy
in the current universe suggest that there could be a future transition
to an exactly supersymmetric world. Atomic and molecular binding in this
susy background probably require that electroweak symmetry breaking survives
the transition. Among several susy higgs models that have been
discussed, one stands out in this...
Dr
Ivonne Zavala
(Durham University)
30/07/2007, 17:10
Theoretical Models (String Theory and Formal Aspects of SUSY)
Parallel Talk
I will discuss the dynamics of a probe D3-brane propagating in a warped string
compactification. I will focus in the exploration of the trajectories obtained from
giving the brane angular momentum in the extra dimensions. I will show that, in
general, angular momentum creates a centrifugal barrier, causing bouncing as well as
cyclic cosmologies from a "mirage" point of view. I will also...
Dr
Xavier Calmet
(Université Libre de Bruxelles)
30/07/2007, 17:30
Theoretical Models (String Theory and Formal Aspects of SUSY)
Parallel Talk
We propose a new mechanism to generate the mass of a scalar field in an expanding universe. The mass of this field
turns out to be generated by the cosmological constant and can be naturally small if protected by a conformal
symmetry which is however broken in the gravitational sector. The mass is comparable today to the Hubble time.
This scalar field could thus impact our universe today...
Prof.
Teruki Kamon
(Texas A&M University)
30/07/2007, 17:50
Theoretical Models (String Theory and Formal Aspects of SUSY)
Parallel Talk
Recently, it is shown that the modifications of the Boltzmann equation
describing the evolution of relic abundances due to dilaton dissipative-source
and non-critical-string terms change the cosmologically allowed parameter
space of SUSY model. In this talk, we will investigate the allowed parameter
space in the context of minimal SUGRA boundary condition at the LHC.
We will...
Dr
Axel Krause
(Arnold Sommerfeld Center, LMU Muenchen)
30/07/2007, 18:10
Theoretical Models (String Theory and Formal Aspects of SUSY)
Parallel Talk
The potential detection of gravitational waves from string inflation would provide
essential complementary information to measurements of the scalar spectral index.
E.g.~it can tell us directly the size of the inflationary potential. It is, however,
clear that warped brane inflation (in case it can be tuned to give inflation) cannot
lead to measurable gravitational waves. We will discuss...