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Testing general relativity with cosmological large scale structure.

Ruth Durrer1

  • 1Department of Theoretical Physics, Université de Genève, Quai E. Ansermet 24, 1211 Genève, Switzerland.

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Summary
This summary is machine-generated.

Einstein's equations can be better tested using cosmological large-scale structure observations. Analyzing fluctuations in the energy momentum tensor and metric offers improved testing beyond homogeneous universe models.

Keywords:
Cosmological SurveysCosmologyGeneral RelativityLarge Scale Structure

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Area of Science:

  • Cosmology
  • General Relativity
  • Astrophysics

Background:

  • Current cosmological observations primarily focus on the homogeneous and isotropic universe.
  • Testing Einstein's field equations requires more comprehensive observational data.

Purpose of the Study:

  • To investigate methods for testing Einstein's equations using large-scale structure observations.
  • To demonstrate how considering fluctuations can improve these tests.

Main Methods:

  • Analysis of homogeneous and isotropic universe observations.
  • Incorporation of fluctuations in the energy momentum tensor and metric.
  • Utilizing galaxy number counts, intensity mapping, and cosmic shear data.

Main Results:

  • Homogeneous and isotropic universe observations are insufficient for fully testing Einstein's equations.
  • Considering fluctuations in the energy momentum tensor and metric enhances testing capabilities.
  • Galaxy number counts, intensity mapping, and cosmic shear provide viable avenues for improved tests.

Conclusions:

  • Cosmological large-scale structure offers a powerful tool for testing Einstein's equations.
  • Future research should focus on analyzing fluctuations to refine our understanding of gravity.