Quantum field theory vs. super string theory?

[BadgerBadger92]

I know that a particle or wave (correct me if I’m wrong) is an excitation of underlying quantum fields.

Then there’s string theory which says that particles are “strings.”

Are these two theories connected in some way?

 

[javisot]

I know that a particle or wave (correct me if I’m wrong) is an excitation of underlying quantum fields.

Then there’s string theory which says that particles are “strings.”

Are these two theories connected in some way?

Hello, you may have heard of the AdS=CFT correspondence https://en.wikipedia.org/wiki/AdS/CFT_correspondence. This correspondence shows that string theory and quantum field theory are capable of generating the same predictions and results, under specific conditions and versions of string theory and quantum field theory.

 

[Demystifier]

Even without AdS/CFT correspondence, QFT is obtained from string theory as an approximation, in the limit in which wavelength is much larger than the string length.

 

[Matterwave]

Even without AdS/CFT correspondence, QFT is obtained from string theory as an approximation, in the limit in which wavelength is much larger than the string length.

Genuine question since I'm no expert. Is this true of all string theories? Or does one use this limit to reduce the space of possible string theories?

 

[Demystifier]

All.