期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 421, 期 2, 页码 1431-1442出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2011.20404.x
关键词
methods: analytical; cosmology: theory; dark energy; large-scale structure of Universe
资金
- Queens' College
- Department of Applied Mathematics and Theoretical Physics of University of Cambridge
- Royal Astronomical Society
- STFC [ST/J001538/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H00243X/1, ST/J001538/1] Funding Source: researchfish
- UK Space Agency [ST/H00002X/1, ST/K003674/1] Funding Source: researchfish
In attempts to explain dark energy, a number of models have been proposed in which the formation of a large-scale structure depends on the local environment. These models are highly non-linear and difficult to analyse analytically. N-body simulations have therefore been used to study their non-linear evolution. Here we extend excursion set theory to incorporate environmental effects on structure formation. We apply the method to a chameleon model and calculate observables such as the non-linear mass function at various redshifts. The method can be generalized to study other observables and other models of environmentally dependent interactions. The analytic methods described here should be proved to be useful in delineating which models deserve more detailed study with N-body simulations.
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