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Results tagged with unruh-effect
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This tag is for questions regarding to the Unruh effect (also known as the Fulling–Davies–Unruh effect), the hypothetical prediction that an accelerating observer will observe a thermal bath, like blackbody radiation, whereas an inertial observer would observe none. It was described by Stephen Fulling in 1973, Paul Davies in 1975, and William Unruh in 1976.
5
votes
Accepted
Can we infer Hawking radiation assuming the Unruh effect?
Can we infer Hawking radiation assuming the Unruh effect?
I would say, cautiously, that we can at least infer some thermal properties of a black hole including its Hawking temperature from good unde …
- 16.6k
4
votes
Is there somesort of "recipe" to check if an spacetime exibit the Unruh effect?
Several things to note:
Unruh effect is observed not in a spacetime in general but by an observer (or detector) moving along specific trajectory (non-inertial) in this spacetime.
Additionally, one h …
- 16.6k
3
votes
On the necessity of an event horizon for the Hawking-Unruh effect
Strictly speaking, event or observer horizons are not necessary for the Hawking & Unruh effects.
For example, one can consider a particle detector moving in Minkowski spacetime with time-dependent ac …
- 16.6k
1
vote
Is the Unruh effect a special relativistic effect or a general relativistic effect?
This is not an either - or situation. One should make a distinction between the physics of the effect, in this case the accelerating detector coupled to a quantum field registering the thermal spectru …
- 16.6k
1
vote
Accepted
Can the inertial observer "see" the Unruh accelerated observer's vacuum?
Let us assume that in uniformly accelerated frame we have a cavity impenetrable to the field (e.g. made from an ideal conductor). Accelerated observer starts removing quanta of thermal Unruh bath from …
- 16.6k
1
vote
Accepted
Will gravitational waves decay into photons? (and by how much?)
I would say that title question mixes paradigms: “gravitational wave” usually implies classical gravitational radiation while “photons” are quantum entities.
Gravitational radiation can convert into e …
- 16.6k