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- W4321503885 endingPage "045" @default.
- W4321503885 startingPage "045" @default.
- W4321503885 abstract "Abstract Interesting discrepancies in cosmological parameters are challenging the success of the ΛCDM model. Direct measurements of the Hubble constant H 0 using Cepheid variables and supernovae turn out to be higher than inferred from the Cosmic Microwave Background (CMB). Weak galaxy lensing surveys consistently report values of the strength of matter clustering σ 8 lower than values derived from the CMB in the context of ΛCDM. In this paper we address these discrepancies in cosmological parameters by considering Dark Energy (DE) as a fluid with evolving equation of state w de ( z ), constant sound speed squared ĉ s 2 , and vanishing anisotropic stress σ . Our w de ( z ) is derived from the Holographic Principle and can consecutively exhibit radiation-like, matter-like, and DE-like behaviour, thus affecting the sound horizon and the comoving angular diameter distance, hence H 0 . Here we show DE sound speed plays a part in the matter clustering behaviour through its effect on the evolution of the gravitational potential. We compute cosmological constraints using several data set combinations including primary CMB, CMB lensing, redshift-space-distortions, local distance-ladder, supernovae, and baryon acoustic oscillations. In our analysis we marginalise over ĉ s 2 and find ĉ s 2 = 1 is excluded at ≳ 3 σ . For our baseline result including the whole data set we found H 0 and σ 8 in good agreement (within ≈ 2 σ ) with low redshift probes. Our constraint for the baryon energy density ω b is however in ≈ 3 σ tension with BBN constraints. We conclude evolving DE also having non-standard clustering properties [e.g., ĉ s 2 ( z,k )] might be relevant for the solution of current discrepancies in cosmological parameters." @default.
- W4321503885 created "2023-02-23" @default.
- W4321503885 creator A5005845407 @default.
- W4321503885 creator A5091790851 @default.
- W4321503885 date "2023-02-01" @default.
- W4321503885 modified "2023-10-17" @default.
- W4321503885 title "Holographic energy density, dark energy sound speed, and tensions in cosmological parameters: H<sub>0</sub> and S<sub>8</sub>" @default.
- W4321503885 cites W1487031125 @default.
- W4321503885 cites W1493010450 @default.
- W4321503885 cites W1599657019 @default.
- W4321503885 cites W1849126332 @default.
- W4321503885 cites W1983373006 @default.
- W4321503885 cites W2004188331 @default.
- W4321503885 cites W2035687733 @default.
- W4321503885 cites W2048446165 @default.
- W4321503885 cites W2051737331 @default.
- W4321503885 cites W2056173066 @default.
- W4321503885 cites W2061357238 @default.
- W4321503885 cites W2062750063 @default.
- W4321503885 cites W2064043359 @default.
- W4321503885 cites W2070913392 @default.
- W4321503885 cites W2082907242 @default.
- W4321503885 cites W2089255984 @default.
- W4321503885 cites W2090386790 @default.
- W4321503885 cites W2117363750 @default.
- W4321503885 cites W2119487926 @default.
- W4321503885 cites W2121951791 @default.
- W4321503885 cites W2125048434 @default.
- W4321503885 cites W2131279590 @default.
- W4321503885 cites W2139937287 @default.
- W4321503885 cites W2141586044 @default.
- W4321503885 cites W2146478425 @default.
- W4321503885 cites W2163851871 @default.
- W4321503885 cites W2170967203 @default.
- W4321503885 cites W2171537032 @default.
- W4321503885 cites W2175366168 @default.
- W4321503885 cites W2256170303 @default.
- W4321503885 cites W2273892807 @default.
- W4321503885 cites W2288829652 @default.
- W4321503885 cites W2501864044 @default.
- W4321503885 cites W2591817099 @default.
- W4321503885 cites W2605183184 @default.
- W4321503885 cites W2607444494 @default.
- W4321503885 cites W2763117186 @default.
- W4321503885 cites W2766792342 @default.
- W4321503885 cites W2781677042 @default.
- W4321503885 cites W2796077071 @default.
- W4321503885 cites W2891028706 @default.
- W4321503885 cites W2900358442 @default.
- W4321503885 cites W2900418540 @default.
- W4321503885 cites W2963475251 @default.
- W4321503885 cites W3012318192 @default.
- W4321503885 cites W3034018456 @default.
- W4321503885 cites W3037504478 @default.
- W4321503885 cites W3090954784 @default.
- W4321503885 cites W3099119831 @default.
- W4321503885 cites W3099991766 @default.
- W4321503885 cites W3100205314 @default.
- W4321503885 cites W3100585220 @default.
- W4321503885 cites W3101504752 @default.
- W4321503885 cites W3102894075 @default.
- W4321503885 cites W3103030372 @default.
- W4321503885 cites W3104405069 @default.
- W4321503885 cites W3104485727 @default.
- W4321503885 cites W3104619590 @default.
- W4321503885 cites W3105037260 @default.
- W4321503885 cites W3105414499 @default.
- W4321503885 cites W3105623776 @default.
- W4321503885 cites W3107029590 @default.
- W4321503885 cites W3118744812 @default.
- W4321503885 cites W3127316391 @default.
- W4321503885 cites W3163771497 @default.
- W4321503885 cites W3164821863 @default.
- W4321503885 cites W3165898284 @default.
- W4321503885 cites W3168792625 @default.
- W4321503885 cites W3183271319 @default.
- W4321503885 cites W3183802250 @default.
- W4321503885 cites W3184920340 @default.
- W4321503885 cites W3189629755 @default.
- W4321503885 cites W3194210543 @default.
- W4321503885 cites W3199227738 @default.
- W4321503885 cites W3205203852 @default.
- W4321503885 cites W3207493767 @default.
- W4321503885 cites W3208668605 @default.
- W4321503885 cites W4200627285 @default.
- W4321503885 cites W4210689030 @default.
- W4321503885 cites W4211152155 @default.
- W4321503885 cites W4211153004 @default.
- W4321503885 cites W4221142031 @default.
- W4321503885 cites W4225610241 @default.
- W4321503885 cites W4280635052 @default.
- W4321503885 cites W4286702585 @default.
- W4321503885 cites W4288079944 @default.
- W4321503885 cites W4289443753 @default.
- W4321503885 cites W4292230281 @default.
- W4321503885 cites W4293069034 @default.
- W4321503885 cites W4293168164 @default.
- W4321503885 cites W4296668304 @default.