Geometrogenesis in GFT: An Analysis
arXiv:2307.11805 · doi:10.31389/pop.29
Abstract
In this paper I introduce the idea of geometrogenesis as suggested in the group field theory literature and I offer a criticism of it. Geometrogenesis in the context of GFT is the idea that what we observe as the big bang is nothing else but a phase transition from a non-geometric phase of the universe to a geometric one which is the one we live in and the one to which the spacetime concepts apply. GFT offers the machinery to speak about geometric and non-geometric phases, but I argue that there are serious conceptual issues that threaten the viability of the idea. Some of these issues are directly related to the foundations of GFT and are concerned with the fact that it isn't clear what GFT amounts to and how to understand it. The other main source of trouble has to do with geometrogenesis itself and its conceptual underpinnings as it is unclear whether it requires the addition of an extra temporal or quasitemporal dimension which is unwanted and problematic.
References in corpus (22)
- Quantum Gravity from Causal Dynamical Triangulations: A Review
- Group Field Theory: An overview
- Spacetime as a Feynman diagram: the connection formulation
- The Trinity of Relational Quantum Dynamics
- Homogeneous cosmologies as group field theory condensates
- The Gross-Pitaevskii Equation and Bose-Einstein condensates
- Quantum Cosmology from Group Field Theory Condensates: a Review
- Emergent Friedmann dynamics with a quantum bounce from quantum gravity condensates
- The universe as a quantum gravity condensate
- Renormalization of Tensorial Group Field Theories: Abelian U(1) Models in Four Dimensions
- Flowing in Group Field Theory Space: a Review
- Time Remains
- Group field theory as the microscopic description of the quantum spacetime fluid: a new perspective on the continuum in quantum gravity
- Group field theory condensate cosmology: An appetizer
- Effective relational cosmological dynamics from Quantum Gravity
- Group field theory and its cosmology in a matter reference frame
- Inhomogeneous universe from group field theory condensate
- Statistical equilibrium of tetrahedra from maximum entropy principle
- Quantum fluctuations in the effective relational GFT cosmology
- No Time for Time from No-Time
- Reassessing the problem of time of quantum gravity
- Cosmological implications of the hydrodynamical phase of group field theory