First of all, although I don't think that 4 degree or 59 degree Fahrenheit is absolute zero.
Secondly, absolute zero is the temperature where everything is at perfect order or has zero entropy. At absolute zero, there is no disorder, so there is no heat.
Thirdly, absolute zero is impossible to reach because it will take infinite energy to have perfect order (Refer to the Third Law of Thermodynamics).
And last but not the least, cold is not an entity. Cold is relative. Heat is an entity, it has a definition in Physics.
An interesting aspect of approaching absolute zero is the formation, in a lab, of a unique form of matter known as a "Bose-Einstein Condensate". This is regular matter cooled very close to absolute zero, and which behaves in very unique ways. As I have little experience with them, best you see about them in the link below. It makes for some remarkable reading! And you might find some leads in your quest for information regarding super low temperatures.