778 citations · 4.4k across the 68 of their papers we have counts for
69 papers
Wave correlations and quantum noise in cosmology
Ulf Leonhardt
Wave noise is correlated. While it may look random in space, correlations appear in space-time, because the noise is carried by wave propagation. These correlations of wave noise g…
Casimir cosmology
Ulf Leonhardt
In 1998 astronomers discovered that the expansion of the universe is accelerating. Somehow, something must have made gravity repulsive on cosmological scales. This something was ca…
Transforming space with non-Hermitian dielectrics
Ivor Krešić, Konstantinos G. Makris, Ulf Leonhardt +1
Coordinate transformations are a versatile tool to mould the flow of light, enabling a host of astonishing phenomena such as optical cloaking with metamaterials. Moving away from t…
Van der Waals Anomaly
Itai Y. Efrat, Ulf Leonhardt
In inhomogeneous dielectric media the divergence of the electromagnetic stress is related to the gradients of \varepsilon and μ, which is a consequence of Maxwell's equations. Inve…
Cosmological horizons radiate
Ulf Leonhardt
Gibbons and Hawking [Phys. Rev. D 15, 2738 (1977)] have shown that the horizon of de Sitter space emits radiation in the same way as the event horizon of the black hole. But actual…
Lifshitz cosmology: quantum vacuum and Hubble tension
Dror Berechya, Ulf Leonhardt
Dark energy is one of the greatest scientific mysteries of today. The idea that dark energy originates from quantum vacuum fluctuations has circulated since the late '60s, but theo…