Energy is conserved in all GR solutions that possess a time-like Killing vector. (I.e., in static, non-expanding, non-contracting spacetimes.)
Schwarzschild and Kerr metrics have these vectors, and therefore there is global energy conservation in those spacetimes.
Also, there are still energy conditions (e.g., the null energy condition) that ought to hold even in non-energy-conserving spacetimes, which is why we can't just keep pulling things out of the quantum vacuum for free.
But John will understand these issues more deeply than I do, if what I've posted here isn't enough (or isn't rigorously true).
StartsWithABang
npub10l…nnszn
2025-05-20 17:04:33 UTC
in reply to nevent1q…wvhr
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npub10lrmkc8f3n0weck6scz3eene9d38nvz6hefdmmm06ef40qsgv0jsfnnsznSeen on
wss://relay.momostr.pinkPublished at
2025-05-20 17:04:33 UTCEvent JSON
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