The quantization of gravity - an introduction

Details The quantization of gravity - an introduction The quantization of gravity - an introduction

2000-04-03

arxiv.org/abs/gr-qc/0004005v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX; 31 pages

Scientific paper

This is an introduction to quantum gravity, aimed at a fairly general audience and concentrating on what have historically two main approaches to quantum gravity: the covariant and canonical programs (string theory is not covered). The quantization of gravity is discussed by analogy with the quantization of the electromagnetic field. The conceptual and technical problems of both approaches are discussed, and the paper concludes with a discussion of evidence for quantum gravity from the rest of physics. The paper assumes some familiarity with non-relativistic quantum mechanics, special relativity, and the Lagrangian and Hamiltonian formulations of classical mechanics; some experience with classical field theory, quantum electrodynamics and the gauge principle in electromagnetism might be helpful but is not required. No knowledge of general relativity or of quantum field theory in general is assumed.

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