What is Fermionic repulsion pressure described by quantum mechanics?

Answer 1

Fermions are particles with half spin for example, electrons. Pauli's exclusion principle states that no more than two fermions can occupy the same energy state. from Quantum mechanics, electrons will also fill up all energy levels until the Fermi Energy. If you compress these electrons further, the total fermi energy of the system is increased (not the individual fermions) and work must be done to compress these fermions. As a consequence, the fermions exert an opposing pressure, called the fermionic repulsion pressure.

Answer 2

In quantum mechanics, Fermionic repulsion pressure refers to the phenomenon where particles with half-integer spin (such as electrons) cannot occupy the same quantum state due to the Pauli exclusion principle. This leads to a repulsive force between fermions, preventing them from occupying the same location with the same quantum numbers. This principle is crucial for understanding the structure and behavior of atoms and molecules.