High Quality Content by WIKIPEDIA articles! In mathematical physics, a closed timelike curve (CTC) is a worldline in a Lorentzian manifold, of a material particle in spacetime that is "closed," returning to its starting point. This possibility was first raised by Kurt Godel in 1949, who discovered a solution to the equations of general relativity (GR) allowing CTCs known as the Godel metric; and since then other GR solutions containing CTCs have been found, such as the Tipler cylinder and traversable wormholes. If CTCs exist, their existence would seem to imply at least the theoretical possibility of time travel backwards in time, raising the spectre of the grandfather paradox, although the Novikov self-consistency principle seems to show that such paradoxes could be avoided. Some physicists speculate that the CTCs which appear in certain GR solutions might be ruled out by a future theory of quantum gravity which would replace GR, an idea which Stephen Hawking has labeled the...

В наличии:
	Books.Ru - 1128 руб.	Перейти
Под заказ:
	OZON.ru - 1125 руб.	Перейти

Рейтинг книги: 4 из 5, 9 голос(-ов).