Probing Planck-Scale Physics with Extragalactic Sources? | Zendy

Y. Jack Ng | Zendy; W. A. Christiansen | Zendy; H. van Dam | Zendy

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Probing Planck-Scale Physics with Extragalactic Sources?

Author(s) -

Y. Jack Ng,

W. A. Christiansen,

H. van Dam

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/377121

Subject(s) - physics , planck length , spacetime , planck scale , planck , virtual black hole , planck time , planck energy , quantum gravity , quantum fluctuation , quantum field theory in curved spacetime , planck mass , scale (ratio) , theoretical physics , quantum , astrophysics , quantum mechanics , gravitation , schwarzschild radius , charged black hole

At Planck-scale, spacetime is "foamy" due to quantum fluctuations predictedby quantum gravity. Here we consider the possibility of using spacetimefoam-induced phase incoherence of light from distant galaxies and gamma-raybursters to probe Planck-scale physics. In particular, we examine thecumulative effects of spacetime fluctuations over a huge distance. Our analysisshows that they are far below what is required in this approach to shed lighton the foaminess of spacetime.Comment: Minor changes; this version will appear in ApJ Letter

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