A third type of dimension different from space and time call

Page 1 of 1 [ 8 posts ] 

Jitro
Veteran
Veteran

User avatar

Joined: 17 May 2012
Age: 30
Gender: Male
Posts: 589

26 Jul 2012, 6:46 pm

I once read about a hypothetical third type of dimension different from space and time called "superspace". One which can't be measured with a ruler or stopwatch.

http://faculty.ric.edu/bmurakami/Supersymmetry.html



redrobin62
Veteran
Veteran

User avatar

Joined: 2 Apr 2012
Age: 58
Gender: Male
Posts: 13,009
Location: Seattle, WA

26 Jul 2012, 7:13 pm

Well X, Y, and Z are already 3 dimensions, aren't they? I saw Nova last night where they talked about infinite dimensions "wrapped" like strings around a quark - or something like that. WAY to heady for me!



Jono
Veteran
Veteran

User avatar

Joined: 10 Jul 2008
Age: 40
Gender: Male
Posts: 5,344
Location: Johannesburg, South Africa

28 Jul 2012, 9:34 pm

Jitro wrote:
I once read about a hypothetical third type of dimension different from space and time called "superspace". One which can't be measured with a ruler or stopwatch.

http://faculty.ric.edu/bmurakami/Supersymmetry.html


They are anti-commutative dimensions, the coordinates of which are labeled by the anti-commutative Grassman numbers rather than ordinary numbers. They first arose as concept in physics within the context of string theory, though they are not any of the usual 10 space-time dimensions that string theory talks about.



ruveyn
Veteran
Veteran

User avatar

Joined: 21 Sep 2008
Age: 84
Gender: Male
Posts: 31,502
Location: New Jersey

29 Jul 2012, 6:51 am

Jitro wrote:
I once read about a hypothetical third type of dimension different from space and time called "superspace". One which can't be measured with a ruler or stopwatch.

http://faculty.ric.edu/bmurakami/Supersymmetry.html


A physical space without a local metric?

There are myriads of mathematical spaces without metric. Topology deals with many of such kinds of spaces.

ruveyn



Jono
Veteran
Veteran

User avatar

Joined: 10 Jul 2008
Age: 40
Gender: Male
Posts: 5,344
Location: Johannesburg, South Africa

29 Jul 2012, 3:22 pm

ruveyn wrote:
Jitro wrote:
I once read about a hypothetical third type of dimension different from space and time called "superspace". One which can't be measured with a ruler or stopwatch.

http://faculty.ric.edu/bmurakami/Supersymmetry.html


A physical space without a local metric?

There are myriads of mathematical spaces without metric. Topology deals with many of such kinds of spaces.

ruveyn


In a sense. However, it is neither spacial nor time-like. It's basically a coordinate space in quantum field theories that incorporates what is known as supersymmetry, and are related to the spin of particles and fields. The effect is that bosons can turn into fermions and vica versa, so that supersymmetry predicts that every particle has a partner that differs only by half spin.

http://en.wikipedia.org/wiki/Superspace

http://en.wikipedia.org/wiki/Supersymmetry



physicsnut42
Deinonychus
Deinonychus

User avatar

Joined: 17 Jun 2012
Age: 20
Gender: Female
Posts: 346

30 Jul 2012, 5:07 pm

It's entirely possible that there's another kind of dimension along with space and time.



28847842769377
Hummingbird
Hummingbird

User avatar

Joined: 24 Jan 2013
Age: 19
Gender: Male
Posts: 20

18 Feb 2013, 9:54 am

You (all of you I guess) should read Flatland, I believe you will find it interesting if you are wondering about this.



physicsnut42
Deinonychus
Deinonychus

User avatar

Joined: 17 Jun 2012
Age: 20
Gender: Female
Posts: 346

18 Feb 2013, 2:52 pm

28847842769377 wrote:
You (all of you I guess) should read Flatland, I believe you will find it interesting if you are wondering about this.


I'd agree with that (I've already read it, and it was great!).


_________________
Feel free to PM me. I don't bite!