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Gibbons–Hawking effect

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The Gibbons–Hawking effect is the statement that a temperature can be associated to each solution of the Einstein field equations that contains a causal horizon It is named after Gary Gibbons and Stephen William Hawking

The term "causal horizon" does not necessarily refer to event horizons only, but could also stand for the horizon of the visible universe, for instance

For example, Schwarzschild spacetime contains an event horizon and so can be associated a temperature In the case of Schwarzschild spacetime this is the temperature T of a black hole of mass M , satisfying T ∝ M − 1 } see also Hawking radiation

A second example is de Sitter space which contains an event horizon In this case the temperature T is proportional to the Hubble parameter H , ie T ∝ H

See also

  • Hawking radiation

References

  • Gibbons, Hawking "Cosmological Event Horizons, Thermodynamics, and Particle Creation," Physical Review D, 15, 1977, pages 2738–2751

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Gibbons–Hawking effect


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    29.10.2014


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