Publisher’s Note: Current observational constraints to the holographic dark energy model with a new infrared cutoff via the Markov chain Monte Carlo method [Phys. Rev. D81, 083523 (2010)]

2010 ◽  
Vol 82 (6) ◽  
Author(s):  
Yuting Wang ◽  
Lixin Xu
Keyword(s):  
Monte Carlo ◽  
Markov Chain ◽  
Dark Energy ◽  
Markov Chain Monte Carlo ◽  
Monte Carlo Method ◽  
Dark Energy Model ◽  
Holographic Dark Energy ◽  
Method Phys ◽  
Observational Constraints ◽  
Holographic Dark Energy Model

COSMIC CONSTRAINTS ON HOLOGRAPHIC DARK ENERGY IN BRANS–DICKE THEORY VIA MARKOV-CHAIN MONTE-CARLO METHOD

2010 ◽  
Vol 25 (17) ◽  
pp. 1441-1454 ◽  
Author(s):  
LIXIN XU ◽  
ZHAOFEI LIU ◽  
JIANBO LU ◽  
WENBO LI
Keyword(s):  
Monte Carlo ◽  
Markov Chain ◽  
Dark Energy ◽  
Markov Chain Monte Carlo ◽  
Holographic Dark Energy ◽  
Accelerated Expansion ◽  
Energy Formula ◽  
Current Value ◽  
Best Fit ◽  
The Universe

In this paper, the holographic dark energy in Brans–Dicke theory is confronted by cosmic observations from SN Ia, BAO, OHD and CMB via Markov-Chain Monte-Carlo (MCMC) method. The best fit parameters are found in 1σ region: [Formula: see text] and [Formula: see text] (equivalently ω = 2415.653 which is less than the solar system bound and consistent with other constraint results). With these best fit values of the parameters, it is found that the universe is undergoing accelerated expansion, and the current value of equation of state of holographic dark energy [Formula: see text] which is phantom like in Brans–Dicke theory. The effective Newton's constant decreases with the expansion of our universe for the negative value of model parameter α.

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