Baby Universes Revisited

Abstract

The behaviour of baby universes has been an important ingredient in understanding and quantifying non-critical string theory or, equivalently, models of two-dimensional Euclidean quantum gravity coupled to matter. Within a regularized description based on dynamical triangulations, we amend an earlier conjecture by Jain and Mathur on the scaling behaviour of genus-$g$ surfaces containing particular baby universe `necks’, and perform a nontrivial numerical check on our improved conjecture.

Publication
Phys. Lett. B 706: 86-89, 2011
Date

Citations

  1. Ambjørn, Jan, and T. G. Budd. “Geodesic distances in Liouville quantum gravity.” Nuclear Physics B 889 (2014): 676-691.
  2. Avetisov, Vladik, et al. “Spontaneous symmetry breaking and phase coexistence in two-color networks.” Physical Review E 93.1 (2016): 012302.
  3. Ambjørn, Jan, and Timothy George Budd. “Semi-classical dynamical triangulations.” Physics Letters B 718.1 (2012): 200-204.
  4. Ambjørn, J., and Timothy Budd. “The toroidal Hausdorff dimension of 2d Euclidean quantum gravity.” Physics Letters B 724.4-5 (2013): 328-332.
  5. Ambjørn, J., Görlich, A., Jurkiewicz, J. and Zhang, H., 2015. The spectral dimension in 2D CDT gravity coupled to scalar fields. Modern Physics Letters A, 30(13), p.1550077.
  6. Ambjørn, J., and T. Budd. “Geodesic distances in quantum Liouville gravity.” arXiv preprint hep-th/1405.3424 (2014).
  7. Ambjørn, J., Drogosz, Z., Gizbert-Studnicki, J. and Jurkiewicz, J., 2018. Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations. arXiv preprint arXiv:1812.10671.
  8. Ambjorn, J., and T. Budd. “Two-Dimensional Quantum Geometry.” arXiv preprint arXiv:1310.8552 (2013).
  9. Aref’eva, Irina, and Igor Volovich. “Gas of baby universes in JT gravity and matrix models.” arXiv preprint arXiv:1905.08207 (2019).
  10. Ambjørn, Jan, Zbigniew Drogosz, Jakub Gizbert-Studnicki, and Jerzy Jurkiewicz. “Pseudo-Cartesian coordinates in a model of Causal Dynamical Triangulations.” arXiv preprint arXiv:1812.10671 (2018).