A possibility to solve the problems with quantizing gravity

TL;DR

The paper proposes a novel approach to quantum gravity by modifying second quantization, allowing gravity to be effectively quantized without the usual problems, and explaining the quantum-classical transition through temperature-dependent symmetry breaking.

Contribution

It introduces a new prescription for second quantization that makes perturbative quantum gravity an effective theory and explains the emergence of classical matter at low temperatures.

Findings

Perturbative quantum gravity can be an effective theory with modified quantization.

Quantum phase arises from symmetry breaking at low temperatures.

Planck's constant approaches zero at high temperatures, explaining classical behavior.

Abstract

It is generally believed that quantum gravity is necessary to resolve the known tensions between general relativity and the quantum field theories of the standard model. Since perturbatively quantized gravity is non-renormalizable, the problem how to unify all interactions in a common framework has been open since the 1930s. Here, I propose a possibility to circumvent the known problems with quantizing gravity, as well as the known problems with leaving it unquantized: By changing the prescription for second quantization, a perturbative quantization of gravity is sufficient as an effective theory because matter becomes classical before the perturbative expansion breaks down. This is achieved by considering the vanishing commutator between a field and its conjugated momentum as a symmetry that is broken at low temperatures, and by this generates the quantum phase that we currently live in, while at high temperatures Planck's constant goes to zero.