Physics:Quantum Planck scale
The quantum Planck scale is the regime of length, time, energy, and mass built from the constants , , and . It is often used as an estimate of where both quantum theory and gravity must be treated together. At this scale, classical spacetime geometry is expected to lose its ordinary smooth description.[1][2]
Planck units
Planck length, Planck time, Planck mass, and Planck energy are natural units formed from fundamental constants. They do not by themselves constitute a complete theory, but they mark where dimensional estimates suggest quantum-gravitational effects become strong.[3]
Spacetime resolution
Below or near the Planck length, many approaches to quantum gravity suggest that the familiar continuum picture of spacetime may need replacement by discrete, algebraic, causal, or otherwise nonclassical structures.[4]
Physics role
The Planck scale provides a reference point for black-hole thermodynamics, early-universe cosmology, quantum gravity, and searches for possible departures from standard field theory.
See also
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References
- ↑ "Planck units". https://en.wikipedia.org/wiki/Planck_units.
- ↑ Rovelli, Carlo (2004). Quantum Gravity. Cambridge University Press. ISBN 978-0-521-83733-0.
- ↑ "Planck units". https://en.wikipedia.org/wiki/Planck_units.
- ↑ Rovelli, Carlo (2004). Quantum Gravity. Cambridge University Press. ISBN 978-0-521-83733-0.
Source attribution: Physics:Quantum Planck scale