Would a tachyon be able to escape a black hole?

Asa Heidenreich asked a question: Would a tachyon be able to escape a black hole?
Asked By: Asa Heidenreich
Date created: Sun, Aug 1, 2021 4:24 AM

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Those who are looking for an answer to the question «Would a tachyon be able to escape a black hole?» often ask the following questions:

❔ Can tachyon escape black hole?

Since the disturbance of a localized tachyon cannot spread faster than c, it therefore cannot escape the inside of a black hole's event horizon.

❔ Can tachyon escape from black hole?

Can Tachyons escape a black hole? Since the disturbance of a localized tachyon cannot spread faster than c, it therefore cannot escape the inside of a black hole’s event horizon. Can Tachyons time travel? The answer lies in tachyons. These are particles with imaginary mass that can be thought of as travelling backwards in time.

❔ Faster than light - would a tachyon be able to escape a black hole?

Yes. Since faster-than-light travel is required to leave the black hole, and tachyons apparently propagate faster than light, such a thing would be possible. If tachyons existed...

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Who found Tachyon? Gerald Feinberg. Can a tachyon escape a black hole? Would a Tachyon be able to escape a Black Hole? Yes. A Black Hole has an eacape velocity of the speed of light. If our Tachyon is able to move faster than light, then it will possess the ability to escape.

Can Tachyons escape a black hole? Would a Tachyon be able to escape a Black Hole? Yes. A Black Hole has an eacape velocity of the speed of light. If our Tachyon is able to move faster than light, then it will possess the ability to escape. Can a neutron star become a black hole?

And the answer to your question for this kind of tachyon is that it cannot escape a black hole. The edges of a localized tachyon fulfilling the Klein Gordon equation with an imaginary mass parameter can only spread at a speed less than c, even though the plane waves (momentum eigenstates) that make it up have phase velocities greater than c.

Assuming a tachyon exists, can one escape a black hole? Yes. All time-like curves (world lines of particles with mass >0) inside the event horizon end up at the singularity within a finite proper time, but tachyons (by definition) move on space-like geodesics, so that statement doesn't apply to them.

A tachyon is defined as a faster-than-light particle. Since the concept of a particle with v > c is purely hypothetical, we have no idea about its physical properties ...

So no, tachyons will not escape the horizon simply because the theory will not allow for them to exist. Thus, no, even if they exist, they don't really travel faster than the speed of light, and even if they do, that can't really "travel" through a black hole. So, it is not possible to use tachyons to explore a black hole.

For example, if you assume a tachyon can follow any spacelike geodesic, then (for SC geometry), then some tachyon can escape from any event in the black hole interior (the singularity itself not being an event but an open 'edge' of the manifold).

One of the most useful black hole analogies I've seen imagines that space is "flowing" like a river into a black hole, and the point at which it flows in faster than c is the horizon. This analogy leads to the idea that a tachyon could escape from the "c"-based horizon and perhaps penetrate a bit further.

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