Synergy

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both seen to represent one end of the spectrum, i.e. particle physics and cosmology. These quantities not only symbolize the two different conventional roads to a better understanding of nature, they are also each related to persisting inherent enigmas: the Higgs mechanism (chapter 2) and the cosmological constant problem (section 3.3). Furthermore, scalars and the cosmological constant appear to be linked to the fundamental problems of string/M-theory -- the theory hoped to meld the quantum reality with the cosmological reality; consult appendix A.5 -- namely: supersymmetry breaking (notes [], especially []), the vacuum degeneracy problem (note []) and the calculation of (notes [], especially []). On a more technical note, and are related to the structure of the vacuum, i.e. its property to contain energy. As will be shown in the following sections, the two quantities appear within the discussion of axions (appendix A.1), inflation (appendix A.2) and quintessence (appendix A.3). But most intriguingly, the Higgs mechansim can be understood as the unifying aspect of the two notions, opening up a window of opportunity to model the entire evolution of the universe from its quantum gravitational origin to the state we observe today.