AdS/CFT and toy models for phenomenological holographic cosmology
Gravitation and cosmology: structural questions and applications
Gravitation and Cosmology: Perturbation, Phenomenology and Exact Results
| Full text | |
| Author(s): |
Nastase, Horatiu
Total Authors: 1
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| Document type: | Journal article |
| Source: | Journal of High Energy Physics; v. N/A, n. 12, p. 61-pg., 2020-12-03. |
| Abstract | |
In this paper we describe in detail how to solve the problems of pre-inflationary cosmology within the holographic cosmology model of McFadden and Skenderis [1]. The solutions of the smoothness and horizon problems, the flatness problem, the entropy and perturbation problems and the baryon asymmetry problem are shown, and the mechanisms for them complement the inflationary solutions. Most of the paper is devoted to the solution of the monopole relic problem, through a detailed calculation of 2-loop correlators of currents in a toy model which we perform in d dimensions, in order to extract its leading dependence on geff2=gYM2N/q and find a dilution effect. Taken together with the fact that holographic cosmology gives as good a fit to CMBR as the standard paradigm of Lambda CDM with inflation, it means holographic cosmology extends the inflationary paradigm into new corners, explorable only through a dual perturbative field theory in 3 dimensions. (AU) | |
| FAPESP's process: | 19/21281-4 - Gauge / gravity duality |
| Grantee: | Horatiu Stefan Nastase |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/13231-7 - Chile - São Paulo network on holography |
| Grantee: | Horatiu Stefan Nastase |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Special Projects |