Hawking Radiation: Understanding Its Behavior & Questions

In summary, Uncertainty principle states that there is always uncertainty about the state of a particle. This uncertainty can be resolved through observation. This is what happens with the creation of virtual particles/antiparticles. When a singularity is created, one of the particles in the pair is pulled away and destroyed. This process is energy conservation and it happens in time. If a positively charged particle is taken in, its antiparticle will be radiated as negative energy. However, this does not cancel the effect of the inflow of positive energy.
  • #1
maximus
495
4
my understanding of the behavior of hawking radiation (with questions) is as follows:
1) in Q. Mechanics virtual particle/antiparticle pair are created randomly throughout the universe.
Q1) without a complete layout of Q.M., why is this?

2) the gravity of a singularity will remove one of the pair, leaving the other to be emitted as radiation. thus by the law of energy conservation an inflow of positive energy dissipates the black hole in time.
Q2)if a positivly charged particle is taken in will its antiparticle pair be radiated as 'negative energy'? and if so wouldn't this cancel the effect of the inflow of positive energy? or does +/- energy not anniparticle annihalate each other as does +/- matter? also, how can a virtual (no mass) be effected by gravity? (i know it does because we observe light (photons: virtual particle)bend over high gravity areas.)
 
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  • #2
Originally posted by maximus
my understanding of the behavior of hawking radiation (with questions) is as follows:
1) in Q. Mechanics virtual particle/antiparticle pair are created randomly throughout the universe.
Q1) without a complete layout of Q.M., why is this?



Uncertainty principle.

2) the gravity of a singularity will remove one of the pair, leaving the other to be emitted as radiation. thus by the law of energy conservation an inflow of positive energy dissipates the black hole in time.
Q2)if a positivly charged particle is taken in will its antiparticle pair be radiated as 'negative energy'? and if so wouldn't this cancel the effect of the inflow of positive energy? or does +/- energy not anniparticle annihalate each other as does +/- matter? also, how can a virtual (no mass) be effected by gravity? (i know it does because we observe light (photons: virtual particle)bend over high gravity areas.)

It is a lot more subtle than the above description. Good starting point is understanding so called Penrose Process.

Instanton
 
  • #3


My understanding of Hawking radiation is that it is a form of radiation emitted by black holes due to the quantum effects near the event horizon. This radiation is believed to be caused by virtual particle-antiparticle pairs that are created near the event horizon, with one particle being pulled into the black hole and the other being emitted as radiation.

Regarding your questions, the randomness of virtual particle creation in quantum mechanics is due to the uncertainty principle, which states that at a very small scale, particles can spontaneously appear and disappear. This is a fundamental aspect of quantum mechanics and is still being studied and understood.

In terms of the behavior of Hawking radiation, it is believed that the gravity of a singularity, or the extremely strong gravitational pull near the event horizon, can cause one of the virtual particles to be pulled into the black hole while the other is emitted as radiation. This process is thought to slowly decrease the mass of the black hole, eventually leading to its eventual evaporation.

In response to your first question, if a positively charged particle is taken in, its antiparticle pair would be radiated as negative energy. However, this negative energy does not cancel out the positive energy of the inflow, as the energy of the Hawking radiation is very small compared to the mass of the black hole. Additionally, the annihilation of matter and antimatter only occurs when they come into contact with each other, not when they are separated.

Finally, the effect of gravity on virtual particles is due to the fact that even though they have no mass, they still have energy. And according to Einstein's theory of general relativity, energy is equivalent to mass and can be affected by gravity. This is why we observe light bending around high gravity areas, such as near black holes.

Overall, the behavior of Hawking radiation is still a subject of ongoing research and there are still many questions that remain unanswered. But through continued study and experimentation, we can hope to gain a better understanding of this fascinating phenomenon.
 

1. What is Hawking radiation?

Hawking radiation is a theoretical concept proposed by physicist Stephen Hawking. It suggests that black holes emit radiation and eventually evaporate due to a quantum effect near the event horizon.

2. How does Hawking radiation behave?

Hawking radiation behaves in a way that is opposite to conventional radiation. Instead of being emitted outwards, it is emitted inwards towards the black hole, causing it to lose mass and eventually evaporate.

3. How is Hawking radiation related to the event horizon of a black hole?

The event horizon is the point at which the gravitational pull of a black hole becomes so strong that nothing, including light, can escape from it. Hawking radiation is thought to originate from the event horizon, as particles and antiparticles are created and one falls into the black hole while the other escapes as radiation.

4. Is Hawking radiation observable?

Currently, Hawking radiation has not been directly observed. It is a very weak form of radiation and would require extremely sensitive equipment to detect. However, scientists are actively researching ways to detect and observe Hawking radiation.

5. What are some unanswered questions about Hawking radiation?

There are several unanswered questions about Hawking radiation, including how it affects the mass and lifespan of a black hole, how it interacts with other forms of radiation, and how it relates to other theories such as quantum mechanics and general relativity. Further research and experimentation are needed to fully understand the behavior of Hawking radiation.

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