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Quantum particles expand space?

  1. Mar 25, 2012 #1
    If we put a quantum particle in it's ground state in a cylinder with a movable piston there is an outward force on the piston? If we now put a quantum particle in the universe is there an outward force on space time however small?

    Thanks for any help!
  2. jcsd
  3. Mar 26, 2012 #2


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    Science Advisor

    Space isn't a thing that you can exert a force on. But pressure does affect the curvature of space.
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