Strings as described in Superstring theory

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Discussion Overview

The discussion revolves around the size of strings in superstring theory, particularly in relation to Planck's length and Planck's constant. Participants explore the implications of these scales within the theoretical framework of string theory.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions whether strings are the size of Planck's constant, suggesting that nothing can be smaller than this scale.
  • Another participant clarifies that the relevant term is Planck's length, which is approximately 10^-33 centimeters, and asserts that strings would be about that size.
  • A later reply confirms the correction regarding Planck's length and expresses gratitude for the clarification.
  • One participant mentions that the string length scale can fix the overall scale of the theory and suggests it can take any value within unprobed scales.

Areas of Agreement / Disagreement

Participants generally agree that the relevant scale for strings is Planck's length, but there is no consensus on the implications of this scale or its variability within the theory.

Contextual Notes

There are limitations regarding the understanding of the implications of string size and its relationship to the overall theory, as well as the unprobed scales mentioned.

robertroman10
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Are these 'strings' the size of planks constant? Nothing can obtain a size smaller than planks constant...right? What I am trying to figure out is if saying strings were the size of planks constant were a good approximation if the size of them
 
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Hey

Planck's constant has to do with energy, 6.626 X 10^-34 Joule-second, but you probably mean Planck's length 10^-33 centimeters.

And the answer is yes. The strings would be about that size. I was not sure, so I looked it up on the Internet. Plus I do believe that I have read that before in one of my books on string theory.
 
Forestman said:
Hey

Planck's constant has to do with energy, 6.626 X 10^-34 Joule-second, but you probably mean Planck's length 10^-33 centimeters.

And the answer is yes. The strings would be about that size. I was not sure, so I looked it up on the Internet. Plus I do believe that I have read that before in one of my books on string theory.

yeh sorry i meant length, and thanks a lot this will definitely help me!
 
It (string length scale) fixes the overall scale of the theory and can take any value (in the scales that we have not probed yet).
 

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