Constraints on running vacuum model with H ( z ) and f σ{sub 8}

Journal Article · Tue Aug 01 00:00:00 EDT 2017 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2017/08/032· OSTI ID:22676048

Geng, Chao-Qiang ^[1]; Lee, Chung-Chi ^[2]; Yin, Lu ^[3]

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1. Chongqing University of Posts and Telecommunications, Chongqing, 400065 (China)
2. DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)
3. Department of Physics, National Tsing Hua University, Hsinchu, 300 Taiwan (China)

We examine the running vacuum model with Λ ( H ) = 3 ν H {sup 2} + Λ{sub 0}, where ν is the model parameter and Λ{sub 0} is the cosmological constant. From the data of the cosmic microwave background radiation, weak lensing and baryon acoustic oscillation along with the time dependent Hubble parameter H ( z ) and weighted linear growth f ( z )σ{sub 8}( z ) measurements, we find that ν=(1.37{sup +0.72}{sub −0.95})× 10{sup −4} with the best fitted χ{sup 2} value slightly smaller than that in the ΛCDM model.

• OSTI ID: 22676048
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BACKGROUND RADIATION
BARYONS
COSMOLOGICAL CONSTANT
DENSITY
FLUCTUATIONS
GRAVITATIONAL LENSES
OSCILLATIONS
RELICT RADIATION
SIMULATION
TIME DEPENDENCE
TRITIUM