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quantum_gravity:concepts:planck_length

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quantum_gravity:concepts:planck_length [2017/12/06 09:33] 127.0.0.1 external edit |
quantum_gravity:concepts:planck_length [2018/03/14 12:24] (current) jakobadmin |
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>"//There are many indications that in quantum gravity there might exist a minimal observable distance on the order of the Planck length. The emergence of a minimal length is usually considered a dynamical phenomenon, related to the fact that at the Planck scale there are violent fluctuations of the metric and even topology changes, as in Wheeler space-time foam//" from [[http://journals.aps.org/prd/pdf/10.1103/PhysRevD.49.5182|Quantum groups, gravity, and the generalized uncertainty principle by Michele Maggiore]] | >"//There are many indications that in quantum gravity there might exist a minimal observable distance on the order of the Planck length. The emergence of a minimal length is usually considered a dynamical phenomenon, related to the fact that at the Planck scale there are violent fluctuations of the metric and even topology changes, as in Wheeler space-time foam//" from [[http://journals.aps.org/prd/pdf/10.1103/PhysRevD.49.5182|Quantum groups, gravity, and the generalized uncertainty principle by Michele Maggiore]] | ||

- | >"//if one wants to probe an event in the length scale of Planck | + | >"if one wants to probe an event in the length scale of Planck |

length with a photon, by the uncertainty principle, the particle has to have roughly | length with a photon, by the uncertainty principle, the particle has to have roughly | ||

Planck energy. Now according to general relativity, a photon on such energy scales causes | Planck energy. Now according to general relativity, a photon on such energy scales causes | ||

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===== Further Reading ===== | ===== Further Reading ===== | ||

- | * [[http://math.ucr.edu/home/baez/planck/node2.html|The Planck Length by John Baez | + | * [[http://math.ucr.edu/home/baez/planck/node2.html|The Planck Length by John Baez]] |

- | ]] | + |

quantum_gravity/concepts/planck_length.txt · Last modified: 2018/03/14 12:24 by jakobadmin