Gravity as an emergent phenomenon: a GFT perspective

Details Gravity as an emergent phenomenon: a GFT perspective Gravity as an emergent phenomenon: a GFT perspective

2011-05-28

arxiv.org/abs/1105.5687v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

1+26 pages

Scientific paper

While the idea of gravity as an emergent phenomenon is an intriguing one, little is known about concrete implementations that could lead to viable phenomenology, most of the obstructions being related to the intrinsic difficulties of formulating genuinely pregeometric theories. In this paper we present a preliminary discussion of the impact of critical behavior of certain microscopic models for gravity, based on group field theories, on the dynamics of the macroscopic regime. The continuum limit is examined in light of some scaling assumption, and the relevant consequences for low energy effective theories are discussed, the role of universality, the corrections to scaling, the emergence of gravitational theories and the nature of their thermodynamical behavior.

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