All Questions
Tagged with unruh-effect reference-frames
21
questions
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How does Unruh detector work?
It is often said that an inertial observer in flat spacetime vacuum will see an accelerating observer thermalize (Unruh Effect). If an accelerated observer takes a particle in a box coupled with the ...
user310742
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1
answer
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How is Hawking radiation formally derived?
[EDITED] I'm a postdoc working in cond-mat/quant theory, and I've heard some explanations of Hawking radiation that strike me as inconsistent or silly (e.g., in terms of pair production). I'm hoping ...
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Does the Unruh effect assume its conclusion?
Unruh effect says that accelerating observers see the single particle states of inertial frames as thermal baths.
But it proves it by defining the particle states in the accelerating observer's frame ...
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In the Unruh effect, where does the energy of the particles come from?
If you accelerate an object with constant acceleration, you will in effect create a black hole in the opposite direction in which you are traveling.
This being due to light rays at a certain distance ...
user84158
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Does the count of particles depend on the observer?
The Lagrangian and Action, say in QED, is invariant to Lorentz boosts and independent of observers.
(It’s possible to convert from a Lagrangian to the Hamiltonian view via a Legendre transform $H=vp-L$...
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16
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Can Quantum Field Theory not handle accelerated frames of reference?
Since Quantum Field Theory can't handle gravity, and gravity is mathematically equivalent to acceleration (equivalence principle), does this mean Quantum Field theory can't handle accelerated frames ...
- 949
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Usage of Rindler coordinates in studying Unruh Effect
When studying the Unruh Effect, Rindler coordinates are being used for the observer with constant acceleration. I am confused as to why Rindler coordinates are used as I do not see the motivation for ...
user161157
3
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278
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How can Unruh radiation ever be real?
It is speculated that Unruh radiation exists for accelerating observers in flat spacetime. A thermometer in the frame will point at a higher value than for someone in a stationary frame. In the ...
user303670
2
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Why a mode on Minkowsky SpaceTime becomes two modes on Rindler Spacetime
----I am a student on Quantum Computing--- For the whole undertanding of
"Tetrapartite entanglement measures of GHZ
state with uniform acceleration" by Qiang Dong. https://doi.org/10.1088/...
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How does the Unruh effect create particles?
I've read that the Rindler horizon cuts off access to fundamental quantum fields and leads to a mixing of positive and negative frequencies via the Bogoliubov transformations. But here is where I have ...
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Why does annihilation and creation operator mix in curved spacetime?
When doing QFT in curved spacetime we do Bogoliubov transformation to find one set of annihilation and creation operators in terms of others. In the paper Particle creation by black holes
Hawking ...
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5
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Lorentz transform in Unruh effect
I'm re-reading about the Unruh effect and while I broadly understand the concept of plugging through the coordinate transform and the Bogoliubov transformation, I'm curious as to whether there is a ...
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What is the Unruh temperature for an observer at near the speed of light?
I have read about the Unruh effect where an accelerated observer would experience a radiation that a non accelerated observer wouldn't.
According to wikipedia the formula goes like this:
My question ...
- 25
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168
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If I spin around why do the stars not dissappear?
Galaxies at the far limit of the visible universe are moving away from us near the speed of light. There may be some beyond that that are moving away from us faster, so the universe appears to have an ...
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Can the fact that the vacuum energy in curved spacetime is not boost invariant be explained without mathematics?
I read in an answer to a question if Hawking radiation can be explained without too much mathematics that this is impossible insofar the vacuum energy is not boost invariant in a curved spacetime. ...
