Cosmological Spatial Curvature with the Alcock-Paczyński Effect
We propose a methodology to measure the cosmological spatial curvature by employing the deviation from statistical isotropy due to the Alcock-Paczyński effect of large scale galaxy clustering. This approach has a higher degree of model independence than most other proposed methods, being independent of the calibration of standard candles, rulers, or clocks, of the power spectrum shape (and thus also of the prerecombination physics), of the galaxy bias, of the theory of gravity, of the dark energy model, and of the background cosmology in general. We find that a combined Dark Energy Spectroscopic Instrument-Euclid galaxy survey can achieve ΔΩ_{k0}=0.057 at 1σ C.L. in the redshift range z<2 by combining power-spectrum and bispectrum measurements.
Authors
- Marco Marinucci (ORCID: https://orcid.org/0000-0003-1159-3756)
- Luca Amendola (ORCID: https://orcid.org/0000-0002-0835-233X)
- Miguel Quartin (ORCID: https://orcid.org/0000-0001-5853-6164)
Institutions
- Universidade Federal do Rio de Janeiro (BR)
- University of Padua (IT)
- Heidelberg University (DE)
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT)
- Institute of Theoretical Physics (CN)
- Universidade Federal do Espírito Santo (BR)
- Heidelberg Institute for Theoretical Studies (DE)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-03-13
- DOI
- https://doi.org/10.1103/physrevlett.134.101004
- Citations
- 3
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 3.46
Funders
- Deutsche Forschungsgemeinschaft
- Ministero dell’Istruzione, dell’Università e della Ricerca
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro