String Theory, Space-Time Non-Commutativity and Structure Formation

Details String Theory, Space-Time Non-Commutativity and Structure Formation String Theory, Space-Time Non-Commutativity and Structure Formation

2007-03-19

arxiv.org/abs/hep-th/0703173v1

Prog.Theor.Phys.Suppl.171:121-132,2007

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 2 figures, based on an invited talk at the 21st Nishinomiya-Yukawa Memorial Symposium, Nov. 11 - 16, 2006, to be pub

Scientific paper

10.1143/PTPS.171.121

A natural consequence of string theory is a non-commutative structure of space-time on microscopic scales. The existence of a minimal length, and a modification of the effective field theory are two consequences of this space-time non-commutativity. I will first explore some consequences of the modifications of the effective field theory for structure formation in the context of an inflationary cosmology. Then, I will explore the possibility that the existence of a minimal length will lead to a structure formation scenario different from inflation. Specifically, I will discuss recent work on string gas cosmology.

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