Cosmological measurement of the gravitational constant $G$ using the CMB, the BAO and the BBN
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866916733592272896 |
|---|---|
| author | Lamine, Brahim Ozdalkiran, Yacob Mirouze, Louis Erdogan, Furkan Ilic, Stéphane Tutusaus, Isaac Kou, Raphael Blanchard, Alain |
| author_facet | Lamine, Brahim Ozdalkiran, Yacob Mirouze, Louis Erdogan, Furkan Ilic, Stéphane Tutusaus, Isaac Kou, Raphael Blanchard, Alain |
| contents | Recent cosmological observations have provided numerous new observations with increasing precision that have led to the era of precision cosmology. The exquisite quality of these observations opens new possibilities towards measuring fundamental constants with good precision and at scales which are complementary to the laboratory ones. In particular, the cosmic microwave background (CMB) temperature and polarization spectra contain a wealth quantity of information, well beyond the basic cosmological parameters. In this paper, we update the precision on a cosmological determination of $G$ by using the latest Planck data release (PR4) in combination with the latest baryon acoustic oscillation (BAO) from the Dark Energy Spectroscopic Instrument (DESI) data release 1 and the primordial Helium fraction from BBN. We demonstrate a precision of $1.8\%$, corresponding to a $\sim25\%$ improvement compared to the literature. This measurement is compatible with laboratory ones within one standard deviation. Finally, we show that this cosmological measurement of $G$ is robust against several assumptions made on the cosmological model, in particular when considering a non-standard dark energy fluid or non-flat models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_15553 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cosmological measurement of the gravitational constant $G$ using the CMB, the BAO and the BBN Lamine, Brahim Ozdalkiran, Yacob Mirouze, Louis Erdogan, Furkan Ilic, Stéphane Tutusaus, Isaac Kou, Raphael Blanchard, Alain Cosmology and Nongalactic Astrophysics Recent cosmological observations have provided numerous new observations with increasing precision that have led to the era of precision cosmology. The exquisite quality of these observations opens new possibilities towards measuring fundamental constants with good precision and at scales which are complementary to the laboratory ones. In particular, the cosmic microwave background (CMB) temperature and polarization spectra contain a wealth quantity of information, well beyond the basic cosmological parameters. In this paper, we update the precision on a cosmological determination of $G$ by using the latest Planck data release (PR4) in combination with the latest baryon acoustic oscillation (BAO) from the Dark Energy Spectroscopic Instrument (DESI) data release 1 and the primordial Helium fraction from BBN. We demonstrate a precision of $1.8\%$, corresponding to a $\sim25\%$ improvement compared to the literature. This measurement is compatible with laboratory ones within one standard deviation. Finally, we show that this cosmological measurement of $G$ is robust against several assumptions made on the cosmological model, in particular when considering a non-standard dark energy fluid or non-flat models. |
| title | Cosmological measurement of the gravitational constant $G$ using the CMB, the BAO and the BBN |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2407.15553 |