M-Theory is that same as Superstring Field Theory?

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Discussion Overview

The discussion revolves around the relationship between M-Theory and Superstring Field Theory, exploring whether they are the same or distinct theories. Participants express uncertainty regarding the understanding and definitions of these theories.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants express uncertainty, noting that neither M-Theory nor Superstring Field Theory is completely understood, which complicates any definitive comparison.
  • One participant suggests that string field theory is a second quantized formulation of string theory, describing it as a more general formalism for calculations rather than a new theory.
  • Another participant describes M-Theory as a variant of string theory that introduces new structures, such as an 11th spacetime dimension and n-dimensional "branes," and states that pre-M-Theory string theories can be found within M-Theory.
  • It is mentioned that string field theory techniques are not widely used, while M-Theory has been a significant focus in string theory research over the past decade.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether M-Theory and Superstring Field Theory are the same, and multiple competing views remain regarding their definitions and relationships.

Contextual Notes

Limitations include the incomplete understanding of both theories and the technical nature of the distinctions being discussed, which may depend on specific definitions and interpretations.

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Does anyone know if M-Theory is that same as Superstring Field Theory?
 
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Haha does anyone knooooow?
 


As far as I know neither of these theories is completely understood. It is therefore unlikely that anyone knows if they are or are not "the same."
 


You might find the responses in this very old thread helpful. Someone asked basically the same question you did. I think the conclusion we came to was something like:

- "Strin[g] field theory is a second quantized formulation of string theory... this is a very technical point to explain. In a nutshell, string field theory is a more general form[al]ism to do calculations in string theory. It's more of a technique than a new theory."

- M-Theory is a variant of string theory with new structures, like an 11th spacetime dimension and the introduction of n-dimensional "branes" in addition to vanilla strings. Pre-M-Theory string theories can be found "inside of" M-Theory (that is, they are dual to special cases of M Theory).

- The two do not have anything to do with each other.

As far as I know String Field Theory techniques not widely used, but M-Theory has been the basis of virtually all string theory research for at least the last decade.
 

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