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War on Lambda: fighting the cosmological constant problem

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We discuss two recent attempts to tackle the famous cosmological constant problem (CCP). We begin with a discussion of the problem, highlighting obstacles towards solving it before introducing our two distinct models. The first of these is the Fab Four model, which is able to absorb the cosmological constant through self-adjustment of a scalar field, and whose cosmology we have recently begun to develop. The second of these is a novel new idea that eliminates the troublesome role played by particle physics in the CCP .

Refs arXiv:1106.2000, 1112.4866, 1208.3373, 1203.1040

This talk is part of the Cosmology lunch series.

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