# Quantum Gravity: Motivations and Alternatives

@inproceedings{Hedrich2009QuantumGM, title={Quantum Gravity: Motivations and Alternatives}, author={Reiner Hedrich}, year={2009} }

The mutual conceptual incompatibility between General Relativity and Quantum Mechanics / Quantum Field Theory is generally seen as the most essential motivation for the development of a theory of Quantum Gravity. It leads to the insight that, if gravity is a fundamental interaction and Quantum Mechanics is universally valid, the gravitational field will have to be quantized, not at least because of the inconsistency of semi-classical theories of gravity. The objective of a theory of Quantum…

## 7 Citations

### Metric Operator Equations for Quantum Gravity

- Physics
- 2015

The search for a consistent theory of quantum gravity has motivated the development of radically different approaches. This seeks consists of constructing a mathematical apparatus that encapsulates…

### Semiclassical Length Measure from a Quantum-Gravity Wave Function

- Physics
- 2017

The definition of a length operator in quantum cosmology is usually influenced by a quantum theory for gravity considered. The semiclassical limit at the Planck age must meet the requirements implied…

### Naturalizing Gravity of the Quantum Fields, and the Hierarchy Problem

- Physics
- 2017

It is shown that gravity can be incorporated into the Standard Model (SM) in a way solving the hierarchy problem. For this, the SM effective action in flat spacetime is adapted to curved spacetime…

### Severe Challenges in Gravity Theories

- Physics, Geology
- 2012

Gravity is specifically the attractive force between two masses separated at a distance. Is this force a derived or a fundamental interaction? We believe that all fundamental interactions are quantum…

### A Pre-History of Quantum Gravity: The Seventeenth Century Legacy and the Deep Metaphysics of Space beyond Substantivalism and Relationism

- Philosophy
- 2011

This essay demonstrates the inadequacy of contemporary substantivalist and relationist interpretations of quantum gravity hypotheses via an historical investigation of the debate on the underlying…

### On structuralism’s multiple paths through spacetime theories

- Philosophy
- 2012

This essay examines the underdetermination problem that plagues structuralist approaches to spacetime theories, with special emphasis placed on the epistemic brands of structuralism, whether of the…

### The perceptions and experience of the “passage” of time

- Computer Science
- 2017

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