Large-scale structure observables in general relativity

Donghui Jeong, Fabian Schmidt

Research output: Contribution to journalReview articlepeer-review

28 Scopus citations


We review recent studies that rigorously define several key observables of the large-scale structure of the Universe in a general relativistic context. Specifically, we consider (i) redshift perturbation of cosmic clock events; (ii) distortion of cosmic rulers, including weak lensing shear and magnification; and (iii) observed number density of tracers of the large-scale structure. We provide covariant and gauge-invariant expressions of these observables. Our expressions are given for a linearly perturbed flat Friedmann-Robertson-Walker metric including scalar, vector, and tensor metric perturbations. While we restrict ourselves to linear order in perturbation theory, the approach can be straightforwardly generalized to higher order.

Original languageEnglish (US)
Article number044001
JournalClassical and Quantum Gravity
Issue number4
StatePublished - Feb 19 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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