48 citations · 102 across the 4 of their papers we have counts for
10 papers
Emergent Cosmology from Quantum Gravity in the Lorentzian Barrett-Crane Tensorial Group Field Theory Model
Alexander F. Jercher, Daniele Oriti, Andreas G. A. Pithis
We study the cosmological sector of the Lorentzian Barrett-Crane (BC) model coupled to a free massless scalar field in its Group Field Theory (GFT) formulation, corresponding to th…
Phase transitions in TGFT: Functional renormalization group in the cyclic-melonic potential approximation and equivalence to O models
Andreas G. A. Pithis, Johannes Thürigen
In the group field theory approach to quantum gravity, continuous spacetime geometry is expected to emerge via phase transition. However, understanding the phase diagram and findin…
The phase diagram of the multi-matrix model with ABAB-interaction from functional renormalization
Astrid Eichhorn, Antonio D. Pereira, Andreas G. A. Pithis
At criticality, discrete quantum-gravity models are expected to give rise to continuum spacetime. Recent progress has established the functional renormalization group method in the…
(No) phase transition in tensorial group field theory
Andreas G. A. Pithis, Johannes Thürigen
Continuum spacetime is expected to emerge via phase transition in discrete approaches to quantum gravity. A promising example is tensorial group field theory but its phase diagram…
Group field theory condensate cosmology: An appetizer
A. G. A. Pithis, M. Sakellariadou
This contribution is an appetizer to the relatively young and fast evolving approach to quantum cosmology based on group field theory condensate states. We summarize the main assum…
Aspects of quantum gravity
Andreas G. A. Pithis
For more than 80 years theoretical physicists have been trying to develop a theory of quantum gravity which would successfully combine the tenets of Einstein's theory of general re…