What is the curvature of 2D Euclidean quantum gravity?

被引:0
|
作者
R. Loll [1 ]
T. Niestadt [2 ]
机构
[1] Radboud University,Institute for Mathematics, Astrophysics and Particle Physics
[2] Perimeter Institute for Theoretical Physics,undefined
关键词
2D Gravity; Models of Quantum Gravity; Lattice Models of Gravity;
D O I
10.1007/JHEP04(2025)158
中图分类号
学科分类号
摘要
We re-examine the nonperturbative curvature properties of two-dimensional Euclidean quantum gravity, obtained as the scaling limit of a path integral over dynamical triangulations of a two-sphere, which lies in the same universality class as Liouville quantum gravity. The diffeomorphism-invariant observable that allows us to compare the averaged curvature of highly quantum-fluctuating geometries with that of classical spaces is the so-called curvature profile. A Monte Carlo analysis on three geometric ensembles, which are physically equivalent but differ by the inclusion of local degeneracies, leads to new insights on the influence of finite-size effects. After eliminating them, we find strong evidence that the curvature profile of 2D Euclidean quantum gravity is best matched by that of a classical round four-sphere, rather than the five-sphere found in previous work. Our analysis suggests the existence of a well-defined quantum Ricci curvature in the scaling limit.
引用
收藏
相关论文
共 50 条
  • [21] QUENCHING 2D QUANTUM-GRAVITY
    BAILLIE, CF
    HAWICK, KA
    JOHNSTON, DA
    PHYSICS LETTERS B, 1994, 328 (3-4) : 284 - 290
  • [22] 2d CDT is 2d Horava-Lifshitz quantum gravity
    Ambjorn, Jan
    Glaser, Lisa
    Sato, Yuki
    Watabiki, Yoshiyuki
    PHYSICS LETTERS B, 2013, 722 (1-3) : 172 - 175
  • [23] Bulk Correlation Functions in 2d Quantum Gravity
    I. K. Kostov
    V. B. Petkova
    Theoretical and Mathematical Physics, 2006, 146 : 108 - 118
  • [24] QUANTUM COSMOLOGICAL APPROACH TO 2D DILATON GRAVITY
    NAVARROSALAS, J
    TALAVERA, CF
    NUCLEAR PHYSICS B, 1994, 423 (2-3) : 686 - 704
  • [25] REMARK ON EQUIVALENCE OF TOPOLOGICAL AND QUANTUM 2D GRAVITY
    MARSHAKOV, A
    MIRONOV, A
    MOROZOV, A
    JETP LETTERS, 1991, 54 (08) : 425 - 428
  • [26] Spinfoam 2D quantum gravity and discrete bundles
    Oriti, D
    Rovelli, C
    Speziale, S
    CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (01) : 85 - 108
  • [27] The virtual black hole in 2d quantum gravity
    Grumiller, D
    Kummer, W
    Vassilevich, DV
    NUCLEAR PHYSICS B, 2000, 580 (1-2) : 438 - 456
  • [28] A remark on the three approaches to 2D quantum gravity
    A. Belavin
    M. Bershtein
    G. Tarnopolsky
    JETP Letters, 2011, 93 : 47 - 51
  • [29] New critical phenomena in 2D quantum gravity
    Arnbjoern, J.
    Thorleifsson, G.
    Wexler, M.
    Nuclear Physics, Section B, 439 (1-2):
  • [30] Boundary loop models and 2D quantum gravity
    Kostov, Ivan
    JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, 2007,