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- Trans-Planckian_problem abstract "In black hole physics and inflationary cosmology, the trans-Planckian problem refers to the appearance of quantities beyond the Planck scale, which raise doubts on the physical validity of some results in these two areas, since one expects the physical laws to suffer radical modifications beyond the Planck scale.In black hole physics, the original derivation of Hawking radiation involved field modes that, near the black hole horizon, have arbitrarily high frequencies—in particular, higher than the inverse Planck time, although these do not appear in the final results. A number of different alternative derivations have been proposed in order to overcome this problem.The trans-Planckian problem can be conveniently considered in the framework of sonic black holes, condensed matter systems which can be described in a similar way as real black holes. In these systems, the analogue of the Planck scale is the interatomic scale, where the continuum description loses its validity. One can study whether in these systems the analogous process to Hawking radiation still occurs despite the short-scale cutoff represented by the interatomic distance.The trans-Planckian problem also appears in inflationary cosmology. The cosmological scales that we nowadays observe correspond to length scales smaller than the Planck length at the onset of inflation.".
- Trans-Planckian_problem wikiPageID "1061151".
- Trans-Planckian_problem wikiPageRevisionID "596687939".
- Trans-Planckian_problem hasPhotoCollection Trans-Planckian_problem.
- Trans-Planckian_problem subject Category:Black_holes.
- Trans-Planckian_problem subject Category:Inflation_(cosmology).
- Trans-Planckian_problem subject Category:Quantum_gravity.
- Trans-Planckian_problem type BlackHole109223177.
- Trans-Planckian_problem type BlackHoles.
- Trans-Planckian_problem type Location100027167.
- Trans-Planckian_problem type Object100002684.
- Trans-Planckian_problem type PhysicalEntity100001930.
- Trans-Planckian_problem type Region108630039.
- Trans-Planckian_problem type YagoGeoEntity.
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- Trans-Planckian_problem comment "In black hole physics and inflationary cosmology, the trans-Planckian problem refers to the appearance of quantities beyond the Planck scale, which raise doubts on the physical validity of some results in these two areas, since one expects the physical laws to suffer radical modifications beyond the Planck scale.In black hole physics, the original derivation of Hawking radiation involved field modes that, near the black hole horizon, have arbitrarily high frequencies—in particular, higher than the inverse Planck time, although these do not appear in the final results. ".
- Trans-Planckian_problem label "Trans-Planckian problem".
- Trans-Planckian_problem sameAs m.042lgc.
- Trans-Planckian_problem sameAs Q7833559.
- Trans-Planckian_problem sameAs Q7833559.
- Trans-Planckian_problem sameAs Trans-Planckian_problem.
- Trans-Planckian_problem wasDerivedFrom Trans-Planckian_problem?oldid=596687939.
- Trans-Planckian_problem isPrimaryTopicOf Trans-Planckian_problem.