Re: Hard Sci-fi?

On May 3, 11:51 am, thro...@[EMAIL PROTECTED]
 (Wayne Throop) wrote:

> Hm.  Don't think so.  The widget used to create a wormhole endpoint
> (or at least... that's' what I remember it doing) is nowhere near
> massive or energetic enough.   It seems squarely within the realm
> of applicability of newtonian/maxwellian physics, but it went and
> produced a wormhole anyways.

There are various ways of giving a number to a wormhole that
classically reduces to the concept of mass.  The one which is
conserved, however, is found by measuring the curvature of spacetime
far from the wormhole produced by the wormhole (called the ADM mass).
There are wormhole geometries which can have an arbitrarily small ADM
mass - wormhole geometries that can have any spatial extent, even
Although they tend to collapse into either circular hoops or polyhedra
whose sides are regular polygons.  Thus, there is nothing in known
science that forbids a wormhole from forming in a region of space with
an arbitrarily small mass contained therein.

Reference - M. Visser, Lorentzian Wormholes: From Einstein to Hawking,
AIP Press, 1996

Luke