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<p>In this brief review, we describe the key role played by Big Bang Nucleosynthesis (BBN) in today’s ‘Precision Cosmology’, focusing in particular on the precise determination of the primordial abundance of deuterium. We describe the development of the ideas and methods of BBN research from their beginnings more than 75 years ago to the latest developments, and conclude with a forward look to likely advances expected towards the end of the current decade.</p>

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Precision cosmology with the lightest elements

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月23日

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  • Max Pettini,
  • Ryan Cooke

摘要

In this brief review, we describe the key role played by Big Bang Nucleosynthesis (BBN) in today’s ‘Precision Cosmology’, focusing in particular on the precise determination of the primordial abundance of deuterium. We describe the development of the ideas and methods of BBN research from their beginnings more than 75 years ago to the latest developments, and conclude with a forward look to likely advances expected towards the end of the current decade.