SAKHAROV'S INDUCED GRAVITY: A MODERN PERSPECTIVE

By Matt Visser. 2002

247 citations recorded by the source corpus.

Sakharov's 1967 notion of "induced gravity" is currently enjoying a significant resurgence. The basic idea, originally presented in a very brief 3-page paper with a total of four formulas, is that gravity is not "fundamental" in the sense of particle physics. Instead it was argued that gravity (general relativity) emerges from quantum field theory in roughly the same sense that hydrodynamics or continuum elasticity theory emerges from molecular physics. In this article we will translate the key ideas into modern language, and explain the various versions of Sakharov's idea currently on the market.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/f4bb5b0b9265a4a71d18a07cf42b6b3eac34481b

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In Astronomy and Astrophysics

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Friedmann Equations from Entropic Force (2010, unknown): “In this socalled induced gravity, spacetime background emerges as a mean field approximation of underlying microscopic degrees of freedom, similar to hydrodynamics or continuum elasticity theory from molecular physics [2].”
Emergent gravity from noncommutative gauge theory (2007, background): “We briefly recall this general mechanism [42]: Consider e.”
Effective action in a higher-spin background (2010, background): “[39, 40] for a review), one may consider the cut-off dependent local terms as providing the dynamics of the tensor fields.”
Entanglement Entropy of Black Holes (2011, background): “2 Entanglement entropy in induced gravity One, possibly very natural, way, originally proposed by Jacobson [141], to attack these problems is to consider gravity as an induced phenomenon, in the spirit of Sakharov’s ideas [190] (for a review on a modern touch on these ideas see [220]).”
Generalized Uncertainty Principle: Approaches and Applications (2014, result): “Similar behavior was observed in the hydrodynamics [260].”
D‐branes in Standard Model building, gravity and cosmology (2003, methodology): “If we regularize using the heat kernel method, a scalar contributes 1 6 − ξ where ξ is the conformal coupling, a Weyl fermion contributes −(1) 6 , a massless vector −(2) 3 [174].”
Analogue Gravity (2005, background): “3 Emergent gravity One of the more fascinating approaches to “quantum gravity” is the suggestion, typically attributed to Sakharov [332, 393], that gravity itself may not be “fundamental physics”.”