Quark (dairy product) considered to be different types of fresh cheese, while in Eastern Europe cottage cheese is usually viewed as a type of quark (e.g. Russian for cottage cheese is "зернёный творог" "zernyony tvorog", literally "grainy quark"). Quark is similar to French fromage blanc, Indian paneer, and the queso fresco/queijo fresco made in the Iberian Peninsula and in some Latin American countries. It is distinct from Italian ricotta because ricotta (Italian "recooked") is made from scalded whey. Quark is somewhat similar to yogurt cheeses such as the South Asian "chak(k)a", the Arabic labneh, and the Central Asian suzma or kashk, but while
Current quark the mass of the constituent quark covering. The current quark mass is a parameter to compute sufficiently small color charges. "Definition": The current quark mass means the mass of the constituent quark mass reduced by the mass of the respective constituent quark covering. There is almost no difference between current quark mass and constituent quark mass for the heavy quarks (c,b,t).This is not so for the light quarks (u, d, s). The comparison of the results of the computations with the experimental data supplies the values for the current quark masses. Current quark Current quarks (also called naked quarks or