Continuous phase transitions are classified by their universality class, each of which is characterized by a set of critical exponents. The values of the critical exponents are non-trivial and fundamental numbers. A lot of experimental and simulation work has been devoted to the determination of critical exponents. Recent values are available in Wikipedia:
Pages in category "Critical exponents (phase transitions)"
The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes.