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Anisotropic spinfoam cosmology

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Article number 015017
<mark>Journal publication date</mark>2013
<mark>Journal</mark>Classical and Quantum Gravity
Issue number1
Number of pages25
Publication statusPublished
Original languageEnglish


The dynamics of a homogeneous, anisotropic universe are investigated within the context of spinfoam cosmology. Transition amplitudes are calculated for a graph consisting of a single node and three links—the ‘Daisy graph’—probing the behaviour a classical Bianchi I spacetime. It is shown further how the use of such single node graphs gives rise to a simplification of states such that all orders in the spin expansion can be calculated, indicating that it is the vertex expansion that contains information about quantum dynamics.