String Theory: Are Vibrating Strings Tensioned or Free-Floating?

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Discussion Overview

The discussion revolves around the nature of strings in string theory, specifically whether they are tensioned or free-floating during vibrations. Participants explore the implications of tension in the context of string and brane theory, comparing it to the behavior of conventional strings, such as guitar strings.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • One participant questions whether strings in string theory require tension to vibrate, similar to a guitar string, or if they can vibrate freely without tension.
  • Another participant asserts that the strings are under tension but expresses uncertainty about the source of that tension.
  • A different viewpoint suggests that strings might behave like long rods with intrinsic elasticity, implying a different mechanism for tension.
  • One participant proposes that the strings could be tensioned to space-time itself, introducing a conceptual link between strings and the fabric of the universe.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether strings are tensioned or free-floating, and multiple competing views remain regarding the nature of tension in string theory.

Contextual Notes

The discussion lacks clarity on the definitions of tension and the assumptions about the nature of strings in string theory, leaving several points unresolved.

gonegahgah
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If you have a guitar string and you pluck it nothing happens.
Not unless it is tensioned by pulling both ends tightly.

In string and brane theory do the strings have something that keeps them tensioned?
Or don't they need tension to maintain vibrating; unlike normal strings?
Are they free floating vibrations or tensioned vibrations?

Sorry, I think I put this in the wrong area (I'm not a science researcher); can it please be moved to general physics?
 
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gonegahgah said:
If you have a guitar string and you pluck it nothing happens.
Not unless it is tensioned by pulling both ends tightly.

In string and brane theory do the strings have something that keeps them tensioned?
Or don't they need tension to maintain vibrating; unlike normal strings?
Are they free floating vibrations or tensioned vibrations?

Sorry, I think I put this in the wrong area (I'm not a science researcher); can it please be moved to general physics?

They are under tension. From where? Who knows.
 
James Leighe said:
They are under tension. From where? Who knows.

Maybe they are like long rods with intrinsic elasticity.
 
It seems to me that the strings would be tension to space-time it's self.
 

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