ثقب دودي

من أجل استخدامات أخرى، انظر ثقب دودي (توضيح).

Analogy to a wormhole in a curved 2D space (see Embedding Diagram)

Artist's impression of the wormhole as seen by an observer crossing the event horizon of a Schwarzschild wormhole, which is similar to a Schwarzschild black hole but with the singularity replaced by an unstable path to a white hole in another universe. The observer originates from the right, and another universe becomes visible in the center of the wormhole shadow once the horizon is crossed. This new region is, however, unreachable in the case of a Schwarzschild wormhole, as the bridge between the black hole and white hole will always collapse before the observer has time to cross it. See White Holes and Wormholes for a more technical discussion and an animation of what an observer sees when falling into a Schwarzschild wormhole.

الثقوب الدودية هي في الحقيقة ممرات دودية تخيلية موجودة داخل الثقوب السوداء لكنها حتى الآن أسيرة الرياضيات فهي لم ترصد بأي طريقة وذلك لصعوبة الكشف عن ما يحويه الثقب الأسود.

و كما أتى في النظرية التي طرحتها فهي قد تسمح للمسافر في أحدها بأن يخرج إلى كون آخر أو زمن آخر فهي ممرات كونزمنية وربما تتصل بالثقوب البيضاء من الطرف الآخر منها.

 الثقوب الدودية لشوارتسشيلد

Embedded diagram of a Schwarzschild wormhole.

 انظر أيضاً

• ثقب أسود
• أسرع من الضوء
• أنبوب كراسنيكوڤ
• Non-orientable wormhole
• Self-consistency principle
• حلقة رومانية

 المصادر

• DeBenedictis, Andrew and Das, A. "On a General Class of Wormhole Geometries". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)CS1 maint: multiple names: authors list (link)
• Dzhunushaliev, Vladimir. "Strings in the Einstein's paradigm of matter". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Einstein, Albert and Rosen, Nathan. The Particle Problem in the General Theory of Relativity. Physical Review 48, 73 (1935).
• Fuller, Robert W. and Wheeler, John A.. Causality and Multiply-Connected Space-Time. Physical Review 128, 919 (1962).
• Garattini, Remo. "How Spacetime Foam modifies the brick wall". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• González-Díaz, Pedro F. "Quantum time machine". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• González-Díaz, Pedro F. "Ringholes and closed timelike curves". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Khatsymosky, Vladimir M. "Towards possibility of self-maintained vacuum traversable wormhole". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Krasnikov, Serguei. "Counter example to a quantum inequality". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Krasnikov, Serguei. "The quantum inequalities do not forbid spacetime shortcuts". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Li, Li-Xin. "Two Open Universes Connected by a Wormhole: Exact Solutions". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Morris, Michael S., Thorne, Kip S., and Yurtsever, Ulvi. Wormholes, Time Machines, and the Weak Energy Condition. Physical Review Letters 61, 1446–1449 (1988).
• Morris, Michael S. and Thorne, Kip S.. Wormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity. American Journal of Physics 56, 395-412 (1988).
• Nandi, Kamal K. and Zhang, Yuan-Zhong. "A Quantum Constraint for the Physical Viability of Classical Traversable Lorentzian Wormholes". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)CS1 maint: multiple names: authors list (link)
• Ori, Amos. "A new time-machine model with compact vacuum core". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Roman, Thomas, A. "Some Thoughts on Energy Conditions and Wormholes". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)CS1 maint: multiple names: authors list (link)
• Teo, Edward. "Rotating traversable wormholes". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
• Visser, Matt. "The quantum physics of chronology protection by Matt Visser". arXiv eprint server. Retrieved August 12 2005. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help) An excellent and more concise review.
• Visser, Matt. Traversable wormholes: Some simple examples. Physical Review D 39, 3182–3184 (1989).

 وصلات خارجية

• What exactly is a 'wormhole'? answered by Richard F. Holman, William A. Hiscock and Matt Visser.
• Why wormholes? by Matt Visser.
• Wormholes in General Relativity by Soshichi Uchii.
• New Improved Wormholes by John G. Cramer
• White holes and Wormholes provides a very good description of Schwarzschild wormholes with graphics and animations, by Andrew J. S. Hamilton.
• Questions and Answers about Wormholes a comprehensive wormhole FAQ by Enrico Rodrigo.
• Wormhole on arxiv.org
• Large Hadron Collider – Theory on how the collider could create a small wormhole, possibly allowing time travel into the past.
• animation that simulates traversing a wormhole