3 papers
gr-qc2007
Spinning straight cosmic strings with flat exterior solutions generically violate the weak energy condition
Andrew J. Janca
Any interior solution for a cylindrically symmetric, stationary cosmic string with flat exterior, spinning around its longitudinal axis, and without internal longitudinal currents…
gr-qc2007
Bounded, asymptotically flat toroidal exteriors for cylindrically symmetric spacetimes
Andrew J. Janca
A transitional layer matching the asymptotically flat exterior of a charged, massive toroidal body to an interior with spatially cylindrical symmetry is described. The changes in t…
gr-qc2007
So you want to stop time
Andrew J. Janca
A model of a stasis chamber, slowing the passage of time in its interior down to arbitrarily small rates relative to the outside world, is considered within classical general relat…