Smaller but Larger? Understand Warped Physics in Higher Dimensions

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Discussion Overview

The discussion revolves around the concept of warp bubbles in higher dimensions, as presented in a referenced article. Participants explore the implications of the warp bubble's geometry, particularly the relationship between its outer surface area and the inner pocket volume, raising questions about the nature of space and dimensionality.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant questions the understanding of the warp bubble's dimensions, specifically the area corresponding to a radius of approximately 3×10−15 m and the inner diameter of 200 m.
  • Another participant asserts that the warp bubble is indeed a warp bubble, suggesting a level of acceptance of the concept.
  • There is a discussion about the non-Euclidean nature of space, with one participant stating that this is by design, prompting a question about who designed it.
  • A participant describes the warp bubble as akin to a balloon, where the surface area is microscopically small while the volume inside expands, indicating a potential method of transportation.
  • Another participant expresses skepticism about the practical applications of faster-than-light (FTL) travel, suggesting an alternative focus on other applications related to the concept.
  • Concerns are raised about the credibility of the referenced article, with one participant questioning its publication status and another providing a citation from a journal.

Areas of Agreement / Disagreement

Participants express a range of views on the implications and credibility of warp bubbles, with no clear consensus on the validity of the concepts discussed or their applications. Disagreements about the nature of space and the interpretation of the article's claims persist.

Contextual Notes

Participants highlight the need for clarity regarding the assumptions underlying the warp bubble concept, as well as the credibility of the sources referenced. There is also an acknowledgment of the speculative nature of the applications discussed.

extrads
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Smaller,but Larger??

You may have a look at the attachments,which are the key parts of my problem.
And the full text is here:http://arxiv.org/pdf/gr-qc/9905084v5.pdf
How to understand "The outermost surface of the warp bubble will have an area corresponding to a radius of approximately 3×10−15 m, while the inner diameter of the ‘pocket’ is 200m."??Something about higher dimensions?
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Well, it is a warp bubble, isn't it?
 
dauto said:
Well, it is a warp bubble, isn't it?
yes,it is.
 
So, why are you surprised? space is not Euclidean (by design).
 
"By design"? Who designed it?
 
From the article:
We will solve the problem of the large negative energy by keeping the surface area of the warp bubble itself microscopically small, while at the same time expanding the spatial volume inside the bubble.
So it's like a balloon with the hole for inflating it being the part that interfaces to our normal universe.
This would not be my favorite method of transportation - even if I was late for work.
 
I'm not saying this is crackpotery, but maybe there could be another category for this kind of stuff, like "Star Trek Science".
 
  • #10
.Scott said:
From the article:So it's like a balloon with the hole for inflating it being the part that interfaces to our normal universe.
This would not be my favorite method of transportation - even if I was late for work.

So you mean the expanding spatial volume has something to do with higher or extra dimensions ? And what is your favorite method of transportation?
 
Last edited:
  • #11
extrads said:
You may have a look at the attachments,which are the key parts of my problem.
And the full text is here:http://arxiv.org/pdf/gr-qc/9905084v5.pdf
How to understand "The outermost surface of the warp bubble will have an area corresponding to a radius of approximately 3×10−15 m, while the inner diameter of the ‘pocket’ is 200m."??Something about higher dimensions?
View attachment 62676

View attachment 62677

Do you have an exact reference on where this was published? An Arxix-only upload from 1999 sounds dubious.

Zz.
 
  • #12
ZapperZ said:
Do you have an exact reference on where this was published? An Arxix-only upload from 1999 sounds dubious.
According to Inspire, it was published in Class.Quant.Grav. 16 (1999) 3973-3979
 
  • #13
Bill_K said:
According to Inspire, it was published in Class.Quant.Grav. 16 (1999) 3973-3979

Thanks. One can now do citation index. :)

Zz.
 

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