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arXiv · 1711.05693

Connecting Loop Quantum Gravity and String Theory via Quantum Geometry

Deepak Vaid
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Abstract

We argue that String Theory and Loop Quantum Gravity can be thought of as describing different regimes of a single unified theory of quantum gravity. LQG can be thought of as providing the pre-geometric exoskeleton out of which macroscopic geometry emerges and String Theory then becomes the \emph{effective} theory which describes the dynamics of that exoskeleton. The core of the argument rests on the claim that the Nambu-Goto action of String Theory can be viewed as the expectation value of the LQG area operator evaluated on the string worldsheet. A concrete result is that the string tension of String Theory and the Barbero-Immirzi parameter of LQG turn out to be proportional to each other.

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Deepak Vaid. 2017-11-15. Connecting Loop Quantum Gravity and String Theory via Quantum Geometry. https://arxiv.org/abs/1711.05693

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