[Todos] Anuncio Coloquio del IFLP/Dto Fisica - jueves 2 de marzo 10:30hs

[Maria Virginia Manias]

Estimados,

Agradecemos la difusión del anuncio del próximo coloquio del Ciclo de
Coloquios y Seminarios que se organizan el Instituto de Física La Plata
y el Departamento de Física.

Se adjunta material para difundir en carteleras.

Saludos cordiales,
Virginia Manías
Secretaria Científica del IFLP



*COLOQUIO  DEL IFLP y DEL DEPARTAMENTO*


*DÍA Y HORARIO ESPECIALES: **JUEVES 2 de MARZO – 10:30 hs*

*AULA CHICA*





*TÍTULO**: **"Cosmic strings - a window to the very early universe?"*



*EXPOSITOR:* *Prof. Betti Hartman*

*Universidade de Sao Paulo (Sao Carlos), Brasil*
*Resumen:* Topological defects (aka topological solitons) appear in field
theory models with spontaneous symmetry breaking and a non-trivial vacuum
manifold. Cosmic strings are created whenever a U(1) symmetry gets
spontaneously broken and are the topological defect that seems
most important from the point of view of cosmological applications. There
are several reasons for this: on the one hand, it is believed that cosmic
strings might be linked to the fundamental strings of String theory and on
the other, essentially all models that try to embed the Theory of Inflation
into the scheme of Grand Unification predict the production of cosmic
strings. Furthermore, the analysis of recent Cosmic Microwave Background
(CMB) data suggests that cosmological models containing cosmic strings
provide a viable fit to both the temperature as well as polarization
anisotropy spectra. I will discuss the properties of cosmic strings and
explain why - with high precision cosmological data - they provide an
interesting testing ground for physics at very high energies and hence the
primordial universe.
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