Generalized holographic cosmology: low-redshift observational constraint
- 주제(키워드) 도움말 AdS-CFT Correspondence , Holography and quark-gluon plasmas , Gauge-gravity correspondence
- 발행기관 SPRINGER
- 발행년도 2021
- 총서유형 Journal
- 본문언어 영어
초록/요약 도움말
Four-dimensional cosmological models are studied on a boundary of a five-dimensional Anti-de Sitter (AdS(5)) black hole with AdS Reissner-Nordstrom and scalar charged Reissner-Nordstrom black hole solutions, where we call the former a Hairless black hole and the latter a Hairy black hole. To obtain the Friedmann-Robertson-Walker (FRW) spacetime metric on the boundary of the AdS(5) black hole, we employ Eddington-Finkelstein (EF) coordinates to the bulk geometry. We then derive modified Friedmann equations on a boundary of the AdS(5) black hole via AdS/CFT correspondence and discuss its cosmological implications. The late-time acceleration of the universe is investigated in our models. The contributions coming from the bulk side is treated as dark energy source, and we perform MCMC analyses using observational data. Compared to the ACDM model, our models contain additional free parameters; therefore, to make a fair comparison, we use the Akaike information criterion (AIC) and the Bayesian information criterion (BIC) to analyze our results. Our numerical analyses show that our models can explain the observational data as reliable as the ACDM model does for the current data.
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