Galaxy number counts at second order in perturbation theory: a leading-order term comparison
نویسندگان
چکیده
The Galaxy number density is a key quantity to compare theoretical predictions the observational data from current and future large scale structure surveys. precision demanded by these stage IV surveys requires use of second order cosmological perturbation theory. Based on independent calculation published previously, we present result comparison with results three other groups at leading order. Overall find that differences between different approaches lie mostly definition certain quantities, where ambiguity signs in addition extra terms
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2021
ISSN: ['1361-6382', '0264-9381']
DOI: https://doi.org/10.1088/1361-6382/ac1be6