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Mathematically, a vacuum (twist or twist-in) is a twistor with negative potential. It is the opposite of a bubble. Taken by themselves, vacua are scalar fields of deflatons.

Note6

Notes (+):


+ Both bubbles and vacua output the same absolute value.

+ Whereas an inflaton will blowup a function at a single point, a deflaton will depress every point in its vector field.

See also

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