# Smaller,but Larger?

## Main Question or Discussion Point

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???

Related Special and General Relativity News on Phys.org
Well, it is a warp bubble, isn't it?

Well, it is a warp bubble, isn't it?
yes,it is.

So, why are you surprised? space is not Euclidean (by design).

HallsofIvy
Homework Helper
"By design"? Who designed it?

.Scott
Homework Helper
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".

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:
ZapperZ
Staff Emeritus
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.

Bill_K
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

ZapperZ
Staff Emeritus