School of Astronomy (SoA) - Weekly Seminar
Primordial magnetic fields from charged scalar
field and anisotropic inflation
Razieh Emami (Shahid Beheshti Univ. and IPM)
Abstract:
In this talk, first
I will consider to our previous inflationary
model where the inflaton field is a complex
scalar field coupled to a U(1) gauge field. Due
to the coupling of the inflaton to the gauge
field,
a time dependent mass term for the gauge field
is generated dynamically and conformal
invariance is broken. We study whether a
significant amount of primordial magnetic fields
can be generated during inflation by allowing a
time-dependent U(1) gauge kinetic coupling. Then
I will go to our current work about
anisotropic inflation in which at the background
level the amplitude of the gauge field is not
equal to zero.
We would like to study the results of this
anisotropic inflation on the CMB power spectrum.
Wednesday /
23-June-2010 / 2-Tir-1389/ 2:00 PM
IPM Larak
Building-School of Astronomy
Address:
Larak
Garden, opposite Araj, Artesh Highway,Tehran,
Iran
E-mail:
astro(at)ipm.ir
