发表机构
Dipartimento di Fisica, Università degli Studi di Trieste; Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Trieste; Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität（的里雅斯特大学物理系; 意大利国家核物理研究所的里雅斯特分部; 约翰·沃尔夫冈·歌德大学理论物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文主张粒子加速器无法触及普朗克尺度，转而通过凝聚态物理（如时空凝聚体、黑洞引力子凝聚体等框架）探索量子引力，提出关键在于跨越概念桥梁而非追求更高能量。
AI 中文摘要
粒子加速器已将基础物理推至非凡的精度，但普朗克尺度仍比任何可预见的对撞机高出十五个数量级。我们认为，这一僵局并非暂时的不足，而是不可逾越的。出路在于凝聚态物理：广义不确定性关系的实验室检验、类比系统，以及——最具争议性地——将时空本身视为凝聚体的框架。我们回顾了弦环图景，其中量子化将世界片转变为三维分形；黑洞作为自维持引力子凝聚体的微粒描述；以及连接黎曼相与预几何相的相变结构。结论刻意具有挑衅性：量子引力的问题不再是能量问题，而是跨越桥梁的问题。
英文摘要
Particle accelerators have carried fundamental physics to remarkable precision, but the Planck scale remains fifteen orders of magnitude beyond any foreseeable collider. We argue that this impasse is not a temporary shortfall but an insurmountable one. The way out runs through condensed matter physics: laboratory tests of generalized uncertainty relations, analog systems, and --- most provocatively --- frameworks in which spacetime itself is a condensate. We review the string-loop picture, in which quantization turns the world sheet into a three-dimensional fractal, the corpuscular description of black holes as self-sustained graviton condensates, and the phase-transition structure connecting the Riemannian phase to a pre-geometric one. The conclusion is deliberately provocative: the question of quantum gravity is no longer a question of energy, but of crossing the bridge.
Comments34 pages, 5 figures, submitted to Condensed Matter (Special Issue celebrating Prof. Guido Barbiellini)
