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Carte Studies in String Cosmology Amanda Weltman

Studies in String Cosmology

From Chameleons to Chaos

Autor: Amanda Weltman
Limbă: germană
Legare: Carte broșată
Editura: VDM Verlag
Disponibilitate: În depozitul extern
Expediem în 9-15 zile
437.07 lei
In this book we study the problem of moduli§stabilisation in a cosmological context of string§theory...

Informații despre carte

Autor
Amanda Weltman
Limbă
germană
Legare
Carte - Carte broșată
Publicat
2008
Pagini
276
EAN
9783639080193
ISBN
363908019X
Enbook ID
06817242
Editura
VDM Verlag
Greutate
386
Dimensiuni
155 x 229 x 15

Descriere completă

In this book we study the problem of moduli§stabilisation in a cosmological context of string§theory. Motivated by the moduli stabilisation§problem, we introduce for the first time chameleon§fields, so named because their masses and values§depend sensitively on the local matter density. We§show that such fields can evade all local tests of§the equivalence principle and we make predictions for§near-future tests of gravity in space while driving§the current phase of cosmic accelerated expansion. We§then study string corrections to racetrack inflation,§a proposal for inflationary dynamics in the context§of flux compactifications. Finally, we study a§truncated low energy effective action that models the§neighbourhood of special points in moduli space, such§as conifold points, where extra massless degrees of§freedom arise. We study moduli dynamics and§stabilisation in this context in a cosmological§background and find surprising variety in field§dynamics including the appearance of chaos. The chaos§aids in our understanding of the behaviour of moduli§near these special points. In particular we find a§viable mechanism for trapping some of the moduli near§these points.

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