Quantcast
  • Register
PhysicsOverflow is a next-generation academic platform for physicists and astronomers, including a community peer review system and a postgraduate-level discussion forum analogous to MathOverflow.

Welcome to PhysicsOverflow! PhysicsOverflow is an open platform for community peer review and graduate-level Physics discussion.

Please help promote PhysicsOverflow ads elsewhere if you like it.

News

New printer friendly PO pages!

Migration to Bielefeld University was successful!

Please vote for this year's PhysicsOverflow ads!

Please do help out in categorising submissions. Submit a paper to PhysicsOverflow!

... see more

Tools for paper authors

Submit paper
Claim Paper Authorship

Tools for SE users

Search User
Reclaim SE Account
Request Account Merger
Nativise imported posts
Claim post (deleted users)
Import SE post

Users whose questions have been imported from Physics Stack Exchange, Theoretical Physics Stack Exchange, or any other Stack Exchange site are kindly requested to reclaim their account and not to register as a new user.

Public \(\beta\) tools

Report a bug with a feature
Request a new functionality
404 page design
Send feedback

Attributions

(propose a free ad)

Site Statistics

145 submissions , 122 unreviewed
3,930 questions , 1,398 unanswered
4,848 answers , 20,603 comments
1,470 users with positive rep
501 active unimported users
More ...

Soft question: What are the many techniques in string theory to eliminate extra dimensions?

+ 1 like - 0 dislike
147 views

There are a variety of ways in which string theory avoids extra dimensions, the most popular of which is obviously compactification, but there are some other less popular approaches (non-critical strings, etc.) as well. Perhaps it would be a good idea to collate such approaches found in the literature, in the answer thread here?

asked Mar 29, 2015 in Resources and References by dimension10 (1,950 points) [ no revision ]

Feel free to move this to chat if you feel it's inappropriate on the main site.

1 Answer

+ 2 like - 0 dislike

Let me start with the well-known ones:

  • Standard compactification on Calabi-Yau or G(2) manifolds, probably the most popular
  • "Large Extra Dimensions" (see this for a critique)
  • The Randall-Sundrum model
  • Non-critical string theory - by introducing an additional "Liouville field"
  • This variant of the Nambu-Goto action with an infinite number of extra terms
answered Mar 29, 2015 by dimension10 (1,950 points) [ revision history ]

Your answer

Please use answers only to (at least partly) answer questions. To comment, discuss, or ask for clarification, leave a comment instead.
To mask links under text, please type your text, highlight it, and click the "link" button. You can then enter your link URL.
Please consult the FAQ for as to how to format your post.
This is the answer box; if you want to write a comment instead, please use the 'add comment' button.
Live preview (may slow down editor)   Preview
Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
If you are a human please identify the position of the character covered by the symbol $\varnothing$ in the following word:
p$\hbar$ysics$\varnothing$verflow
Then drag the red bullet below over the corresponding character of our banner. When you drop it there, the bullet changes to green (on slow internet connections after a few seconds).
To avoid this verification in future, please log in or register.




user contributions licensed under cc by-sa 3.0 with attribution required

Your rights
...