Negative coupling instability and grandunified baryogenesis
Tomislav Prokopec (LNS, Cornell University)
TL;DR
This paper reviews the negative coupling instability in scalar field theories, revealing its role in rapid inflaton decay and implications for grandunified baryogenesis, with an intuitive explanation of the phenomenon.
Contribution
It introduces the negative coupling instability, a new effect causing explosive particle production and fast inflaton decay, with applications to baryogenesis models.
Findings
Negative coupling leads to explosive particle production.
The instability causes very rapid inflaton decay.
Implications for grandunified baryogenesis models.
Abstract
I review my recent work with Brian Greene and Thomas Roos. First I discuss the effect of a negative cross-coupling on the inflaton decay in two scalar field theories. Our main finding is a new effect, the negative coupling instability, which leads to explosive particle production and very fast inflaton decay. Then I discuss the consequences of this instability for grandunified baryogenesis models. The novel aspect of this review is an intuitive explanation of the negative coupling instability, using field trajectories in the configuration space.
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Taxonomy
TopicsCosmology and Gravitation Theories · Solar and Space Plasma Dynamics · Ionosphere and magnetosphere dynamics