Quantum field theory (QFT) describes particles as excitations of underlying quantum fields, while superstring theory models particles as one-dimensional strings. The AdS/CFT correspondence definitively connects these frameworks by demonstrating that certain string theories and conformal quantum field theories produce equivalent predictions under specific conditions. Furthermore, QFT emerges as a low-energy approximation of string theory when the wavelength is much larger than the string length. This relationship holds universally across all string theories, not just a subset.
Theoretical physicists, graduate students in high-energy physics, researchers studying quantum gravity, and anyone interested in the foundational connections between quantum field theory and string theory.
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.BadgerBadger92 said: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?
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 said: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.