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黑洞、引力波与时空奇点——勒梅特会议2024

Black Holes, Gravitational Waves and Space-Time Singularities Lemaitre Conference 2024

Massimo Bianchi, Sergio Luigi Cacciatori, Matteo Galaverni, Gabriele Gionti, Fabio Scardigli

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中文总结 AI 辅助

本文介绍2024年勒梅特会议文集,涵盖宇宙学、引力与量子理论交叉领域的开放问题,如哈勃张力、奇点消除、原初黑洞等,并强调勒梅特遗产的持续影响。

中文摘要 AI 辅助

本社论介绍了2024年勒梅特会议产生的专题文集。该会议是致力于乔治·勒梅特科学遗产的系列会议中的第二届,于2024年6月17日至20日在冈多尔福堡的梵蒂冈天文台举行,时值勒梅特逝世五十七周年,并恰逢其1927年关于宇宙膨胀的开创性论文发表百年之际。本文集收录的十九篇论文探讨了宇宙学、引力与量子理论交汇处最紧迫的开放问题:哈勃张力以及近期DESI数据背景下${\Lambda}$CDM模型的未来;弦论和超引力中的暴胀宇宙学与暗能量模型构建,以及约束它们的Swampland条件;量子宇宙波函数的观测者依赖性;时空奇点的消除或一致性穿越——从勒梅特1933年尘埃模型的量子化到弦论中的前大爆炸反弹以及无奇点黑洞核心的多体构建;原初黑洞及其引力波特征;寻找量子引力的背景无关表述以及视界热力学的第一性原理解释;以及引力背景下量子到经典跃迁的基础地位。一项基于月球的宇宙学观测提议,以及对勒梅特原始原子假说起源的历史重构,完善了本文集。贯穿始终的统一主线是勒梅特本人的遗产——他首次区分了坐标奇点与物理奇点,并创造了术语“视界”——其开创性视野持续引领着宇宙学与基础物理前沿的研究。

英文摘要

This editorial introduces the topical collection arising from the Lemaitre Conference 2024 - the second in a series of meetings dedicated to the scientific legacy of Georges Lemaitre - held at the Vatican Observatory in Castel Gandolfo, 17-20 June 2024, fifty-seven years after Lemaitre's death and on the eve of the centenary of his foundational 1927 paper on the expanding universe. The nineteen contributions collected here address the most pressing open problems at the interface of cosmology, gravitation, and quantum theory: the Hubble tension and the future of $Λ$CDM in light of recent DESI data; inflationary cosmology and dark-energy model-building in string theory and supergravity, together with the Swampland constraints that bound them; the observer-dependence of the quantum-cosmological wave function; the removal, or consistent crossing, of spacetime singularities - from the canonical quantization of Lemaitre's own 1933 dust model to string-theoretic pre-Big-Bang bounces and many-body constructions of singularity-free black-hole cores; primordial black holes and their gravitational-wave signatures; the search for a background-independent formulation of quantum gravity and a first-principles account of horizon thermodynamics; and the foundational status of the quantum-to-classical transition in gravitational contexts. A proposal for lunar-based cosmological observations, and a historical reconstruction of the genesis of Lemaitre's primeval-atom hypothesis, complete the collection. A recurring unifying thread was the legacy of Lemaitre himself - who first distinguished coordinate from physical singularities and coined the term "horizon" - whose pioneering vision continues to guide research at the frontier of cosmology and fundamental physics.

发表机构

  • Università di Roma ‘Tor Vergata’(罗马托尔维尔加塔大学)
  • INFN, Sezione di Roma Tor Vergata(罗马托尔维尔加塔意大利国家核物理研究所)
  • DiSAT, Università dell’Insubria(因苏布里亚大学 DiSAT 学院)
  • INFN, Sezione di Milano(米兰意大利国家核物理研究所)
  • Como Lake centre for AstroPhysics (CLAP)(科莫湖天体物理中心)
  • Vatican Observatory(梵蒂冈天文台)
  • INAF/OAS Bologna(博洛尼亚意大利国家天体物理研究所观测天文学与天体物理学部门)
  • INFN, Sezione di Bologna(博洛尼亚意大利国家核物理研究所)
  • Laboratori Nazionali di Frascati, INFN(弗拉斯卡蒂意大利国家核物理研究所)
  • Dipartimento di Matematica, Politecnico di Milano(米兰理工大学数学系)
  • Lorentz Institute for Theoretical Physics, Leiden University(莱顿大学洛伦兹理论物理研究所)

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