20 citations · 41 across the 7 of their papers we have counts for
7 papers
Emergent dark sector in group field theory cosmology
Andrea Calcinari, Federico Greco, Daniele Oriti +1
We develop an analytical treatment of the emergent cosmological dynamics induced by local polynomial interactions in a deparametrised group field theory model, moving beyond the us…
Gauge versus (hidden) physical symmetries of FLRW cosmologies
Andrea Calcinari, Adrià Delhom, Federico Greco +2
In generally covariant theories, evolution in coordinate time is a gauge transformation, so that a symmetry made manifest in a gauge-fixed description need not be a symmetry of the…
Collective excitations in quantum gravity condensates
Andrea Calcinari, Adrià Delhom, Daniele Oriti
A central open problem in quantum gravity is to understand how continuum spacetime emerges from quantum-geometric degrees of freedom in a background-independent setting. A many-bod…
Relational dynamics and Page-Wootters formalism in group field theory
Andrea Calcinari, Steffen Gielen
Group field theory posits that spacetime is emergent and is hence defined without any background notion of space or time; dynamical questions are formulated in relational terms, in…
Generalised Gaussian states in group field theory and quantum cosmology
Andrea Calcinari, Steffen Gielen
We define generalised Gaussian states for quantum cosmological models based on the algebra, with particular emphasis on its realisation in group field theory f…
Towards anisotropic cosmology in group field theory
Andrea Calcinari, Steffen Gielen
In cosmological group field theory (GFT) models for quantum gravity coupled to a massless scalar field the total volume, seen as a function of the scalar field, follows the classic…
Twisted Geometries Coherent States for Loop Quantum Gravity
Andrea Calcinari, Laurent Freidel, Etera Livine +1
We introduce a new family of coherent states for loop quantum gravity, inspired by the twisted geometry parametrization. We compute their peakedness properties and compare them wit…