Narrow Results

The AdS moving mirror has a suite of interesting characteristics: (1) constant negative energy flux emission, (2) negative finite total energy emission, (3) Planck-distributed scalar particle production, and (4) asymptotic uniform acceleration. Here, we briefly explore the outstanding worldline, its connection to AdS space, the quantum radiation from the mirror, and the classical radiation from its moving point charge counterpart.

It is well known that a receding mirror in Minkowski spacetime can model the formation of a black hole, producing Hawking-like radiation at late times. We ask what an observer would need to do to discern whether the radiation is fermionic or bosonic. Specialising to massless fields in 1+1 dimensions, we find that an Unruh–DeWitt detector accomplishes this: the late time transition rate of a detector coupled linearly to the scalar density of a spinor field is proportional to the Helmholtz free energy density of a fermionic thermal bath, hence showing a clear sign of Fermi–Dirac statistics, with no counterpart in the response of a detector coupled linearly to a scalar field or its derivative. By contrast, an observer examining just the stress-energy tensor sees no difference between a fermion and a boson, neither at late times nor early.

A black mirror is an accelerated boundary that produces particles in an exact correspondence to an evaporating black hole. We investigate the spectral dynamics of the particle creation during the formation process.