RUSSIAN GRAVITATIONAL ASSOCIATION CENTER FOR SURFACE AND VACUUM RESEARCH DEPARTMENT OF FUNDAMENTAL INTERACTIONS AND METROLOGY RGA-CVSR-007/94 gr-qc/9406004 CAUSALITY PROPERTIES OF TOPOLOGICALLY NONTRIVIAL

نویسنده

  • M. YU
چکیده

The causality properties of space-time models with traversable wormholes are considered. It is shown that relativity principle cannot be applied to the motion of the wormhole’s mouths in the outer space and the dynamical wormhole transformation into the time machine is impossible. The examples of both causal and noncausal spacetime models with traversable wormholes are also considered. Some properties of space-time models with causality violation are briefly discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

RUSSIAN GRAVITATIONAL ASSOCIATION CENTER FOR SURFACE AND VACUUM RESEARCH DEPARTMENT OF FUNDAMENTAL INTERACTIONS AND METROLOGY RGA-CVSR-007/94 gr-qc/9406004 CAUSALITY PROPERTIES OF TOPOLOGICALLY NONTRIVIAL SPACE-TIME MODELS

The causality properties of space-time models with traversable wormholes are considered. It is shown that relativity principle cannot be applied to the motion of the wormhole’s mouths in the outer space and the dynamical wormhole transformation into the time machine is impossible. The examples of both causal and noncausal spacetime models with traversable wormholes are also considered. Some pro...

متن کامل

RUSSIAN GRAVITATIONAL ASSOCIATION CENTER FOR SURFACE AND VACUUM RESEARCH DEPARTMENT OF FUNDAMENTAL INTERACTIONS AND METROLOGY RGA-CSVR-009/94 gr-qc/9407019 MULTIDIMENSIONAL COSMOLOGY WITH MULTICOMPONENT PERFECT FLUID AND TODA LATTICES

The integration procedure for multidimensional cosmological models with multicomponent perfect fluid in spaces of constant curvature is developed. Reduction of pseudo-Euclidean Toda-like systems to the Euclidean ones is done. Some known solutions are singled out from those obtained. The existence of the wormholes is proved. PACS numbers: 04.20.J, 04.60.+n, 03.65.Ge

متن کامل

RUSSIAN GRAVITATIONAL ASSOCIATION CENTER FOR SURFACE AND VACUUM RESEARCH DEPARTMENT OF FUNDAMENTAL INTERACTIONS AND METROLOGY RGA-CSVR-003/94 gr-qc/9403063 THE BIRKHOFF THEOREM IN MULTIDIMENSIONAL GRAVITY

The validity conditions for the extended Birkhoff theorem in multidimensional gravity with n internal spaces are formulated, with no restriction on space-time dimensionality and signature. Examples of matter sources and geometries for which the theorem is valid are given. Further generalization of the theorem is discussed.

متن کامل

RUSSIAN GRAVITATIONAL ASSOCIATION CENTER FOR SURFACE AND VACUUM RESEARCH DEPARTMENT OF FUNDAMENTAL INTERACTIONS AND METROLOGY RGA-CSVR-014/94 gr-qc/9411xxx Billiard Representation for Multidimensional Quantum Cosmology near the Singularity

The degenerate Lagrangian system describing a lot of cosmological models is considered. When certain restrictions on the parameters of the model are imposed, the dynamics of the model near the ”singularity” is reduced to a billiard on the Lobachevsky space. The Wheeler-DeWitt equation in the asymptotical regime is solved and a third-quantized model is suggested. PACS numbers: 04.20, 04.40.

متن کامل

RUSSIAN GRAVITATIONAL ASSOCIATION CENTER FOR SURFACE AND VACUUM RESEARCH DEPARTMENT OF FUNDAMENTAL INTERACTIONS AND METROLOGY RGA-CSVR-002/94 gr-qc/9403064 MULTIDIMENSIONAL COSMOLOGY WITH m-COMPONENT PERFECT FLUID

A cosmological model describing the evolution of n Einstein spaces (n > 1) with mcomponent perfect-fluid matter is considered. When all spaces are Ricci-flat and for any α-th component the pressures in all spaces are proportional to the density: p (α) i = (1− h i )ρ, h (α) i = const, the Einstein and Wheeler-DeWitt equations are integrated in the cases: i) m = 1, for all h (α) i ; ii) m > 1, fo...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997