Underwater Work Measurement Techniques

Weltman, Gershon; Egstrom, Glen H.; Willis, Michael A.; Cuccaro, William J.

doi:10.21236/ad0734014

Cited by 6 publications

(1 citation statement)

References 2 publications

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“…The important case of particle production and dynamics in a contracting universe has not been previously studied and will be the subject of a future paper [72]. It is not immediately obvious what the effect of contraction will be and it may be of great relevance to models of the universe that include a phase of contraction such as the cyclic universe [73].…”

Section: Discussionmentioning

confidence: 99%

Cosmological moduli dynamics

Greene¹,

Judes²,

Levin³

et al. 2007

J. High Energy Phys.

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Low energy effective actions arising from string theory typically contain many scalar fields, some with a very complicated potential and others with no potential at all. The evolution of these scalars is of great interest. Their late time values have a direct impact on low energy observables, while their early universe dynamics can potentially source inflation or adversely affect big bang nucleosynthesis. Recently, classical and quantum methods for fixing the values of these scalars have been introduced. The purpose of this work is to explore moduli dynamics in light of these stabilization mechanisms. In particular, we explore a truncated low energy effective action that models the neighborhood of special points (or more generally loci) in moduli space, such as conifold points, where extra massless degrees of freedom arise. We find that the dynamics has a surprisingly rich structure -including the appearance of chaos -and we find a viable mechanism for trapping some of the moduli. *

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Section: Discussionmentioning

confidence: 99%