microcanonical
Adjective
Meaning
English Wikipedia has an article on:microcanonical ensembleWikipedia
microcanonical (not comparable)
(physics) Describing any closed system of constant volume which is thermally isolated from its surroundings, and whose total energy is constant and is known
Examples
For example, the microcanonical ensemble and canonical ensemble are functions strictly of the total energy, which is measured by the total energy operator Ĥ (Hamiltonian).
In an ergodic system, the microcanonical ensemble is the only possible equilibrium ensemble with fixed energy.
On the other hand, if both composition and energy are fixed, then a microcanonical ensemble applies instead.
The equal a priori probability postulate therefore provides a motivation for the microcanonical ensemble described below.
The microcanonical ensemble contains with equal probability each possible state that is consistent with that energy and composition.