Testing the Distance Duality Relation with Cosmological Observations at high Redshift using Artificial Neural Network
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917421693009920 |
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| author | Xie, Yukang Liu, Yang Wu, Puxun Fu, Xiangyun Liang, Nan |
| author_facet | Xie, Yukang Liu, Yang Wu, Puxun Fu, Xiangyun Liang, Nan |
| contents | The cosmic Distance Duality Relation (DDR) is a fundamental prediction of metric gravity under photon number conservation. In this work, we perform a model-independent test of the DDR using Pantheon+ type Ia supernovae (SN Ia), \emph{Fermi} gamma-ray bursts (GRBs) with the FULL and GOLD samples, the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) baryon acoustic oscillation (BAO) measurements, and the galaxy-scale strong gravitational lensing (SGL) system samples at high redshift $0.01 < z \lesssim 8$ using an artificial neural network (ANN) approach. Our results show that the standard DDR is consistent with cosmological observations at high redshift within the $\sim 2 σ$ confidence level. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_06454 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Testing the Distance Duality Relation with Cosmological Observations at high Redshift using Artificial Neural Network Xie, Yukang Liu, Yang Wu, Puxun Fu, Xiangyun Liang, Nan Cosmology and Nongalactic Astrophysics The cosmic Distance Duality Relation (DDR) is a fundamental prediction of metric gravity under photon number conservation. In this work, we perform a model-independent test of the DDR using Pantheon+ type Ia supernovae (SN Ia), \emph{Fermi} gamma-ray bursts (GRBs) with the FULL and GOLD samples, the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) baryon acoustic oscillation (BAO) measurements, and the galaxy-scale strong gravitational lensing (SGL) system samples at high redshift $0.01 < z \lesssim 8$ using an artificial neural network (ANN) approach. Our results show that the standard DDR is consistent with cosmological observations at high redshift within the $\sim 2 σ$ confidence level. |
| title | Testing the Distance Duality Relation with Cosmological Observations at high Redshift using Artificial Neural Network |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2512.06454 |