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Is is possible for two neutrons to be in a bound state, assuming that they only interact gravitationally?

Qmechanic
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Eugene Wu
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    Various related (duplicate?) questions: http://physics.stackexchange.com/q/242604/ http://physics.stackexchange.com/q/202581/ – dmckee --- ex-moderator kitten Apr 24 '16 at 02:50
  • Can you clarify what you mean by assuming that they only interact gravitationally? As the question Rob linked shows, a dineutron is not bound by the strong force, but I suppose in principle the neutrons could form a bound state due to the gravitational force. However the energy of this bound state would be so small that in practice it could never be formed. – John Rennie Apr 24 '16 at 10:52

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