Structures of vacuum condensates in hadrons and Multiquark states

The definition of Quantum Chromodynamic(QCD) vacuum is an important issue in the description of hadronic properties. Recent research on vacuum condensates has resulted in the suggestion of in-hadron condensates, which can be taken as a paradigm shift concerning the viewpoints on the QCD vacuum. In this letter, we will try to define the in-hadron regions and to classify the hadronic and multiquark states. Topological classifications are naturally introduced, and by considering the nonlocal measure, we can estimate the variations of dimension 2 condensate (A_{2 μ}) The calculational techniques can be easily applied to multiquark states and are expected to be applicable to more complex nuclear states.