عنوان مقاله [English]
In 1964 a proposal was offered in this basis that all hadrons made from fundamental particles named “Quarks”. These particles are bounded in hadrons by “Gluons”. Ultimately scientists present the term of “confinement” as a new concept through their failures in producing a single quarks at laboratory. In this paper we analyze a confining quark by using AdS/CFT correspondence. According to holography we should analyze a classical string which is started from boundary and exist in confined bulked space. In AdS/CFT correspondence and confining background we consider a cut off in hologram dimension thus the string can’t reach infinite and get near to this cut off asymptotically. If we consider a pair of quark-antiquark with distance of L from each other on the boundary, we can say the stretched string is half of the flux tube among quarks. When we send the antiquark at infinite distance away, the string’s structure shows the flux tube direction. By comparing free and confining string in this paper we show that the string changed from being a straight line.