Non-locality requires fine tuning and multi-degenerate vacua

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dc.creatorBennett, D. L.
dc.creatorNielsen, H. B.
dc.date2005-03-09
dc.date.accessioned2026-07-07T04:18:09Z
dc.date.available2026-07-07T04:18:09Z
dc.descriptionOur Multiple Point Principle (MPP) states that the realized values for e.g. the parameters of the standard model correspond to having a maximally degenerate vacuum. In the original appearence of MPP the gauge coupling values were predicted to within experimental uncertainties. A mechanism for fine-tuning follows in a natural way from the MPP. Using the cosmological constant as a example, we attempt to justify the assertion that at least a mild form of non-locality is inherent to fine-tuning. This mild form - namely an interaction between pairs of spacetime points that is identical for all pairs regardless of spacetime separation - is insured by requiring non-local action contributions to be reparametrization invariant. However, even this form of non-locality potentially harbours time-machine-like paradoxes. These are seemingly avoided by the MPP fine-tuning mechanism. A (favorable)comparison of the results of MPP in the original lattice gauge theory context with a new implementation with monopoles that uses MPP at the transition to a monopole condensate phase is also described.
dc.description10 pages, Talk given in Dubna conference
dc.identifierhttps://arxiv.org/abs/hep-th/0503080
dc.identifierhttp://arxiv.org/abs/hep-th/0503080
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/53062
dc.subjectHigh Energy Physics - Theory
dc.titleNon-locality requires fine tuning and multi-degenerate vacua
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