THE SAME KEY TO DIFFERENT DOORS - TEMPERATURE PUZZLES

摘要

The notion of temperature in many-body elementary particle processes has been in common use for decades. Thermal models have become simple and universal effective tools to describe particle production not only in high-energy heavy-ion collisions but also in high-energy elementary particle collisions. We perform a critical analysis of the temperature concepts in such processes. Although the temperature concept is a very useful tool, nevertheless, it should be used with care, taking into account that usually it is just a model-dependent fitted parameter.