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Forums
Physics
Beyond the Standard Models
LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena
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[QUOTE="PeterDonis, post: 6847886, member: 197831"] So what energy is involved? That's what I'm trying to understand. Ordinary gravitational binding energy is negative: the total rest mass of a gravitationally bound system is less than the sum of the rest masses of its constituents. What you and [USER=103130]@mitchell porter[/USER] are describing sounds like an additional effect that makes the system more tightly bound: that means its total rest mass will be [I]less[/I] than the "standard" GR gravitational binding energy calculation would indicate, because the effect you're describing makes an additional negative contribution, i.e., it's an additional form of gravitational binding energy. But that doesn't seem to be what galaxy rotation curves are telling us; they're telling us the masses of the galaxies are [I]larger[/I] than a simple calculation based on the visible matter would indicate. The effect you're describing seems to be saying it should be [I]smaller[/I]. No, because more tightly bound local systems means their masses are smaller than a simple calculation based on the visible matter would indicate. But galaxy rotation curves seem to be telling us the masses of galaxies are [I]larger[/I] than a simple calculation based on the visible matter would indicate. So the effect you're describing seems to be in the opposite direction from what the evidence indicates. [/QUOTE]
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Beyond the Standard Models
LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena
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