Smart answer:
Your search for ′Who is the creator of statistical mechanics′ returned the following results:
Ludwig Edward Boltzmann
Ludwig Edward Boltzmann developed Statistical mechanics and make the best achievement of Ludwig Edward Boltzmann's life.
Source:
Josiah Willard Gibbs
In the 1870s, Josiah Willard Gibbs extended the laws of entropy and thermodynamics and coined the term 'statistical mechanics.'
Source:
Albert Einstein
In the early twentieth century, Just before Boltzmann died, Albert Einstein formulated a statistical mechanics that put Boltzmann's law of increasing entropy on a firmer mathematical basis.
Source:
Gibbs
Gibbs invented statistical mechanics to describe the behavior of large aggregates like gases.
Source: