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arXiv 1210.4615hep-thgr-qchep-ph
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弦框架中的膨胀子稳定化和复合暗物质

Dilaton stabilization and composite dark matter in the string frame of heterotic-M-theory

Andrea Zanzi

摘要:

在本文中,我们进一步阐述了我们最近提出的解决宇宙学常数问题的方案-物理评论D82(2010)044006。解决方案的要素之一是爱因斯坦框架量子的变色龙行为:量子的质量是物质密度的递增函数。在该模型中,假设了弦论强耦合区域中弦框架形状因子的适当结构。特别是,弦框架介子的稳定电位是存在的,它应该是量子计算的结果。我们在这篇文章中的主要目的是指出,在很大程度上,可以嵌入在杂化M理论的变色龙模型的拉格朗日。我们说明了一些理论依据,支持有关形状因子的分析。在本文中,我们打破体超对称性与一个大规模的无菌旋量场(即体中微子场),并在一定的假设下,充分的M-理论的行动,我们指出的Casimir起源的稳定潜在的弦框架介子(特别注意的是致力于所涉及的共形变换的作用)。此外,我们指出弦框架的暗物质拉格朗日和一个金斯堡-朗道拉格朗日与不育中微子对扮演的角色的暗物质粒子之间的相似性。然而,还需要更多的研究工作来通过直接计算将体旋量(中微子)拉格朗日量与金斯堡-朗道拉格朗日量联系起来。对这些观点进行现象学的检验是绝对必要的。

英文摘要:

In this paper we further elaborate on our recently proposed solution to the cosmological constant problem - Phys. Rev. D82 (2010) 044006. One of the elements of the solution is the chameleonic behaviour of the Einstein frame dilaton: the mass of the dilaton is an increasing function of the matter density. In that model, a proper structure of the string-frame form factors in the strong coupling region of string theory is assumed. In particular, a stabilizing potential of the string frame dilaton is present and it is supposed to be the result of a quantum calculation. Our main purpose in this article is to point out that the lagrangian of the chameleonic model for the dilaton can be embedded, to a large extent, in heterotic-M-theory. We illustrate some theoretical grounds that support the ansatz about the form factors. In this paper, we break bulk supersymmetry with a massive sterile spinor field (i.e. a bulk neutrino field) and, under certain assumptions about the full M-theory action, we point out the Casimir origin of the stabilizing potential for the string frame dilaton (particular attention is dedicated to the role of the conformal transformations involved). Moreover, we point out the similarity between the string frame dark matter lagrangian and a Ginzburg-Landau lagrangian with sterile neutrino pairs playing the role of dark matter particles. However, more research efforts are necessary to connect the bulk spinor (neutrino) lagrangian with the Ginzburg-Landau lagrangian through direct calculations. A phenomenological test of these ideas is definitely required.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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