Abstract
In this paper we model the transition from the non-geometric holographic cosmology regime, to the usual radiation dominated (RD) cosmology, known as reheating in the case of (perturbative) inflation. We find that we can easily transition into any MSSM construction of intersecting D6-branes, via α′ corrections in the 3 dimensional field theory as well as in cosmology, followed by cosmological reheating via S-NS5-branes. Moreover, we can naturally obtain the (true) cosmological constant Λ of the observed order of magnitude. The resulting supersymmetry breaking is just outside the currently observed energies. The model is consistent with large (TeV scale) extra dimensions, but it prefers smaller ones, and the string scale is generically low.
Highlights
In [8, 9] it was shown that the predictions of the model for the CMBR fluctuations, which are parametrically different than the ones of Λ-CDM plus inflation, fit it as well as the inflationary ones within experimental errors
In this paper we model the transition from the non-geometric holographic cosmology regime, to the usual radiation dominated (RD) cosmology, known as reheating in the case of inflation
We find that we can transition into any MSSM construction of intersecting D6-branes, via α corrections in the 3 dimensional field theory as well as in cosmology, followed by cosmological reheating via S-NS5-branes
Summary
In [5, 6], a phenomenological model of holographic cosmology was defined. Consider a cosmology that in a geometric phase would have metric and scalar given by (background plus fluctuations) ds2 = −dt2 + a2(t)[δij + hij(t, x)]dxidxj , Φ(t, x) = φ(t) + δφ(t, x)a. The interesting case is the opposite, of strongly coupled gravity, or non-geometric phase, when strictly speaking the cosmology (2.1) is not valid (is meaningless), but rather we need to describe the model through its field theory dual, which becomes perturbative. For this 3 dimensional YM field theory dual, with Euclidean signature for the flat 3 dimensional space since its corresponding gravitational part had the same, we take the most general construction consistent with the symmetries (gauge and generalized conformal), i.e., a phenomenological action, SQFT =. Together with the explanation of the usual puzzles of Hot Big Bang cosmology in [10, 11], and the reheating in this paper, holographic cosmology is on the same footing as inflation in explaining all the available data
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