A talk given about the concept of wormholes, and how such structures may effect on transportation through space and time. A good focus on the paradoxes of time-travel is given. From the colloquium at the University of Aarhus in 2009
8. Kruskal – Szekeres
U = r
2M
−1
1/2
er/4M
cosh t
4M , r2M
V = r
2M
−1
1/2
er/4M
sinh t
4M , r2M
U =1−
r
2M
1/2
e
r/4M
cosh t
4M , r2M
V =1−
r
2M
1/2
er/4M
sinh t
4M , r2M
G = c = 1
20. Causalitetsproblemer
Gammel mand giver
mig tegninger til
tidsmaskine mm.
Jeg bygger
tidsmaskinen
Jeg går tilbage for
at give mig tegninger
over tidsmaskinen mm.
Hvem opfandt
tidsmaskinen?
31. Litteratur
[1] Michael S. Morris og Kip Thorne, ”Wormholes in spacetime and their use for interstellar travel: a
tool for teaching general relativity” (1987)
[2] Richard H. Price, ”General relativity primer” (1981)
[3] Robert W. Fuller og John A. Wheeler, ”Causality and Multiply Connected Space-Time” (1962)
[4] A. Einstein og N. Rosen, ”The Particle Problem in the General Theory og Relativity” (1935)
[5] Ulrik I. Uggerhøj ”Tid, den Relative Virkelighed” (2005)
[6] Stephen Hawking ”The Universe in a Nutshell” (2001)
[7] Christoffer J. Fewster og Thomas A. Roman, ”On Wormholes with arbitrary small quantities of
exotic matter” (2005)
[8] James B. Hartle, ”Gravity, An introduction to Einstein's general relativity” (2003)
[9] I. D. Novikov, ”Time machine and self-consistent evolution in problems with self-interaction”
(1992)
[10]Allen Evrett, ”Time travel paradoxes, path integrals, and the many world interpretation of
quantum mechanics” (2004)