Q-ball

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English[edit]

Etymology[edit]

Q (charge) +‎ ball, coined by physicist Sidney Coleman.[1]

Noun[edit]

Q-ball (plural Q-balls)

  1. A charged soliton that represents the lowest possible energy state of its components and is therefore stable.
    • 2001, Tuomas Multamäki, “Q-ball Collisions in the MSSM”, in Strong and Electroweak Matter 2000, page 348:
      Q-ball collisions are studied numerically on a two dimensional lattice for a range of Q-ball charges.
    • 2008, Roger Ebert, Roger Ebert's Movie Yearbook 2009, page 880:
      If you're going to fly inside Mercury's orbit and hurl a bomb into the sun to burst its Q-ball (non-topological soliton) into pieces, I suggest that home may require a theoretical solution.
    • 2009, Noah Graham, Markus Quandt and Herbert Weigel, Specral Methods in Quantum Field Theory, page 171:
      A complex scalar theory in three dimensions with a cubic coupling can support classically stable, time-dependent, non-topological solutions to the equations of motion that carry a global charge Q, called Q-balls.

References[edit]

  1. ^ 1985, S. Coleman, “Q-Balls”, Nuclear Physics B, volume 262, number 2, DOI:10.1016/0550-3213(85)90286-X, Bibcode1985NuPhB.262..263C, pages 263: