Matter-Driven Change of Spacetime Topology
Open Access
- 12 October 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 127 (16), 161301
- https://doi.org/10.1103/physrevlett.127.161301
Abstract
Using Monte Carlo computer simulations, we study the impact of matter fields on the geometry of a typical quantum universe in the causal dynamical triangulations (cdt) model of lattice quantum gravity. The quantum universe has the size of a few Planck lengths and the spatial topology of a three-torus. The matter fields are multicomponent scalar fields taking values in a torus with circumference in each spatial direction, which acts as a new parameter in the cdt model. Changing , we observe a phase transition caused by the scalar field. This discovery may have important consequences for quantum universes with nontrivial topology, since the phase transition can change the topology to a simply connected one.
Funding Information
- Narodowe Centrum Nauki (2019/32/T/ST2/00390, 2016/23/ST2/00289, 2015/17/D/ST2/03479, 2019/33/B/ST2/00589, 2019/32/T/ST2/00389)
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