Quantum gravity, hydrodynamics and emergent cosmology: a collection of perspectives

IF 2.8 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS General Relativity and Gravitation Pub Date : 2024-12-18 DOI:10.1007/s10714-024-03335-4

Jibril Ben Achour, Dario Benedetti, Martin Bojowald, Robert Brandenberger, Salvatore Butera, Renata Ferrero, Flaminia Giacomini, Kristina Giesel, Christophe Goeller, Tobias Haas, Philipp A. Höhn, Joshua Kirklin, Luca Marchetti, Daniele Oriti, Roberto Percacci, Antonio D. Pereira, Andreas G. A. Pithis, Mairi Sakellariadou, Sebastian Steinhaus, Johannes Thürigen

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Abstract

This collection of perspective pieces captures recent advancements and reflections from a dynamic research community dedicated to bridging quantum gravity, hydrodynamics, and emergent cosmology. It explores four key research areas: (a) the interplay between hydrodynamics and cosmology, including analog gravity systems; (b) phase transitions, continuum limits and emergent geometry in quantum gravity; (c) relational perspectives in gravity and quantum gravity; and (d) the emergence of cosmological models rooted in quantum gravity frameworks. Each contribution presents the distinct perspectives of its respective authors. Additionally, the introduction by the editors proposes an integrative view, suggesting how these thematic units could serve as foundational pillars for a novel theoretical cosmology framework termed “hydrodynamics on superspace”.

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量子引力，流体力学和涌现宇宙学：观点集合

这个透视片的集合捕捉了一个致力于弥合量子引力、流体力学和新兴宇宙学的动态研究社区的最新进展和反思。它探讨了四个关键的研究领域：(a)流体力学和宇宙学之间的相互作用，包括模拟重力系统；(b)量子引力中的相变、连续体极限和涌现几何；(c)引力和量子引力的关系观点；(d)基于量子引力框架的宇宙学模型的出现。每一篇文章都展示了各自作者的独特观点。此外，编辑的引言提出了一个综合的观点，建议这些主题单元如何作为一个新的理论宇宙学框架的基础支柱，称为“超空间流体动力学”。

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来源期刊

General Relativity and Gravitation 物理-天文与天体物理

CiteScore

4.60

自引率

3.60%

发文量

136

审稿时长

3 months

期刊介绍： General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity, and path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Quantum field theory in curved spacetime Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest.