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Considering that space-time is expanding at an increasing rate or perhaps during times of inflation - could a black hole just above the neutron star threshold experience a decrease in density to switch back to a neutron star?

Edit: That is, same mass/energy as before but it's now contained in a volume greater than the Schwarzschild radius due to expansion (current or future or inflation era) in the fabric of space time itself.

PS: I'm not talking about that process by energy or mass escaping it (as discussed here).

Community
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DeepSpace101
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No. According to accepted theory, a black hole generally can't lose energy or mass. Even with Hawking radiation, the black hole would simply change size accordingly and remain a black hole. Once it got too small it would evaporate into a burst of Hawking radiation.

I know you say you aren't talking about energy or mass escaping the black hole, but the idea of black holes is that they are a one-way process.

I fail to see how the linked article isn't an answer to your question.

Jake Watrous
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Spacetime does not expand at scales comparable to a Schwarzchild radius, or a solar system, or even a galaxy. Not trying to be a smarty-pants, but for the benefit of all, please get the basics under wraps before moving into conjecture.

LegitimateWorkUser
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