Physics:Quantum quantum gravity
Quantum gravity is the effort to describe gravitational phenomena using quantum principles. It aims to reconcile general relativity with quantum theory in regimes such as black holes, the early universe, and the Planck scale.[1][2]
Conceptual role
This topic lies at the boundary between quantum field theory, relativity, cosmology, and the foundations of measurement. It clarifies what is meant by fields, particles, vacuum, and geometry.[3]
Open questions
The main unresolved issues concern how geometry, vacuum structure, horizons, and quantum states behave when gravitational and quantum effects are simultaneously important.[4]
Description
quantum gravity is a matter-scale concept used to organize how quantum theory describes atoms, particles, fields, condensed matter, plasma, or spacetime-related systems. In the Quantum Collection it is placed by scale so the reader can move from materials and molecules down to subatomic degrees of freedom.
Quantum context
At this scale, the relevant behavior is controlled by quantized states, interactions, conservation laws, and the way excitations or particles are observed. The concept is normally linked to measurable properties such as energy, momentum, charge, spin, spectra, scattering rates, or collective modes.
Role in the collection
This page provides a compact reference point for related pages in Book II. It should be read together with nearby matter-scale topics and the corresponding foundations in quantum mechanics.[5]
See also
Table of contents (84 articles)
Index
Full contents
References
- ↑ "Quantum gravity". https://en.wikipedia.org/wiki/Quantum_gravity.
- ↑ Wald, Robert M. (1984). General Relativity. University of Chicago Press. ISBN 978-0-226-87033-5.
- ↑ Wald, Robert M. (1984). General Relativity. University of Chicago Press. ISBN 978-0-226-87033-5.
- ↑ Rovelli, Carlo (2004). Quantum Gravity. Cambridge University Press. ISBN 978-0-521-83733-0.
- ↑ "Quantum mechanics". https://en.wikipedia.org/wiki/Quantum_mechanics.
Source attribution: Physics:Quantum quantum gravity