Details

Autor(en) / Beteiligte

• Ambjørn, J
• Drogosz, Z
• Gizbert-Studnicki, J
• Görlich, A
• Jurkiewicz, J
• Németh, D

Titel

Matter-Driven Change of Spacetime Topology

Ist Teil von

• Physical review letters, 2021-10, Vol.127 (16), p.161301-161301, Article 161301

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2021

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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 δ in each spatial direction, which acts as a new parameter in the cdt model. Changing δ, 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.