2 papers
quant-ph2025
Quantum noise in time-dependent media and cosmic expansion
Ziv Landau, Ulf Leonhardt
In spatially uniform, but time-dependent dielectric media with equal electric and magnetic response, classical electromagnetic waves propagate exactly like in empty, flat space wit…
gr-qc2025
Wigner function method for the Gibbons-Hawking and the Unruh effect
Ziv Landau, Ulf Leonhardt
An observer at rest with the expanding universe experiences some extra noise in the quantum vacuum, and so does an accelerated observer in a vacuum at rest (in Minkowski space). Th…