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Cosmology and fundamental physics with the ELT-ANDES spectrograph

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jats:titleAbstract</jats:title>jats:pState-of-the-art 19th century spectroscopy led to the discovery of quantum mechanics, and 20th century spectroscopy led to the confirmation of quantum electrodynamics. State-of-the-art 21st century astrophysical spectrographs, especially ANDES at ESO’s ELT, have another opportunity to play a key role in the search for, and characterization of, the new physics which is known to be out there, waiting to be discovered. We rely on detailed simulations and forecast techniques to discuss four important examples of this point: big bang nucleosynthesis, the evolution of the cosmic microwave background temperature, tests of the universality of physical laws, and a real-time model-independent mapping of the expansion history of the universe (also known as the redshift drift). The last two are among the flagship science drivers for the ELT. We also highlight what is required for the ESO community to be able to play a meaningful role in 2030s fundamental cosmology and show that, even if ANDES only provides null results, such ‘minimum guaranteed science’ will be in the form of constraints on key cosmological paradigms: these are independent from, and can be competitive with, those obtained from traditional cosmological probes.</jats:p>


Acknowledgements: This work was financed by Portuguese funds through FCT (Fundação para a Ciência e a Tecnologia) in the framework of the project 2022.04048.PTDC (Phi in the Sky, DOI 10.54499/2022.04048.PTDC). CJM also acknowledges FCT and POCH/FSE (EC) support through Investigador FCT Contract 2021.01214.CEECIND/CP1658/CT0001. RJC is funded by a Royal Society University Research Fellowship, and acknowledges support from STFC (ST/T000244/1). MTM acknowledges the support of the Australian Research Council through Future Fellowship grant FT180100194. JL acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2121 “Quantum Universe” - 390833306. TMS acknowledges the support from the SNF synergia grant CRSII5-193689 (BLUVES). JIGH acknowledges financial support from the Spanish Ministry of Science and Innovation (MICINN) project PID2020-117493GB-I00. CMJM is supported by an FCT fellowship, grant number 2023.03984.BD.


5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences

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Experimental Astronomy

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Springer Science and Business Media LLC
Fundação para a Ciência e a Tecnologia (2022.04048.PTDC)
Central Laser Facility, Science and Technology Facilities Council (ST/T000244/1)
Deutsche Forschungsgemeinschaft (EXC 2121 “Quantum Universe” - 390833306)
Australian Research Council (FT180100194)
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (CRSII5-193689 (BLUVES))
Ministerio de Ciencia e Innovación (PID2020-117493GB-I00)