The AdS/CFT correspondence has also been used to study aspects of condensed matter physics. Over the decades, experimental condensed matter physicists have discovered a number of exotic states of matter, including superconductors and superfluids. These states are described using the formalism of quantum field theory, but some phenomena are difficult to explain using standard field theoretic techniques. Some condensed matter theorists including Subir Sachdev hope that the AdS/CFT correspondence will make it possible to describe these systems in the language of string theory and learn more about their behavior.
The Ads/CFt correSPondEnce haS AlSO bEeN used to stUdY aspEctS of COndEnsEd mATTer PhysiCs. oVEr THE DecADes, exPerImental condeNSed maTter PHysIcists haVe disCoVErED A nuMbeR of Exotic statEs oF mATter, iNcluDing sUPErcOnduCToRs and supErfluIdS. tHeSE STaTeS are dEscRIbed usING thE formALiSm oF quanTum field thEOry, but Some pheNomEna are DifFIcult tO EXplaIn usINg staNDard FielD ThEoRetiC teChNiQues. Some cOnDeNSEd Matter tHeoRiSts INcluDiNG Subir saChDev hope tHaT thE ADS/cft CorRESpONdenCe WILl make it possible tO dEsCribe thesE SystemS In the langUaGe of stRinG Theory And leArn mORe about theIr BEhavior.