What the Casimir effect demonstrates — quantum vacuum fluctuations create measurable force between conducting plates

What spontaneous symmetry breaking does — the vacuum state breaks a symmetry that the laws possess

Vacuum state in quantum field theory breaks global U(1) gauge symmetry

What the Aharonov-Bohm effect shows — electromagnetic potentials have physical effects even where fields are zero

Demonstrates non-zero electromagnetic potentials influence particle phase despite zero field presence

What a Cooper pair is — two electrons with opposite spin and momentum bound through lattice vibrations

Cooper pairs: bound electrons with opposite spins and momenta via phonon-mediated attraction in superconductors

What the fractional quantum Hall effect shows — emergent particles with fractional charge

Fractional quantum Hall effect demonstrates emergent particles with fractional electric charge

How does the Quantum Hall Effect demonstrate the quantization of the Hall conductance, and what role does Planck's constant play in this phenomenon?

Quantum Hall Effect: Hall conductance quantized as νe²/h, where h is Planck's constant

What BCS theory explains — superconductivity arises from Cooper pairs of electrons mediated by phonons

BCS theory explains superconductivity through electron pairing via phonon-mediated attraction