  Degrees of freedom that carry black hole entropy and hair can be described in
the language of Goldstone phenomenon. They represent the pseudo-Goldstone
bosons of certain supertranslations, called A-transformations, that are
spontaneously broken by the black hole metric. This breaking gives rise to a
tower of Goldstone bosons created by the spontaneously-broken generators that
can be labeled by spherical harmonics. Classically, the number of charges is
infinite, they have vanishing VEVs and the corresponding Goldstone modes are
gapless. The resulting hair and entropy are infinite, but unresolvable. In
quantum theory the two things happen. The number of legitimate Goldstone modes
restricted by requirement of weak-coupling, becomes finite and scales as black
hole area in Planck units. The Goldstones generate a tiny gap, controlled by
their gravitational coupling. The gap turns out to be equal to the inverse of
black hole half-life, $t_{BH}$. Correspondingly, in quantum theory the charges
are neither conserved nor vanish, but non-conservation time is set by $t_{BH}$.
This picture nicely matches with the idea of a black hole as of critical system
composed of many soft gravitons. The A-Goldstones of geometric picture
represent the near-gapless Bogoliubov-Goldstone modes of critical soft-graviton
system.
