63 citations · 159 across the 6 of their papers we have counts for
6 papers
The role of diffraction in the Casimir effect beyond the proximity force approximation
Vinicius Henning, Benjamin Spreng, Michael Hartmann +2
We derive the leading-order correction to the proximity force approximation (PFA) result for the electromagnetic Casimir interaction in the plane-sphere geometry by developing the…
Advancing numerics for the Casimir effect to experimentally relevant aspect ratios
Michael Hartmann, Gert-Ludwig Ingold, Paulo A. Maia Neto
Within the scattering theoretical approach, the Casimir force is obtained numerically by an evaluation of the round trip of an electromagnetic wave between the objects involved. Re…
Proximity force approximation and specular reflection: Application of the WKB limit of Mie scattering to the Casimir effect
Benjamin Spreng, Michael Hartmann, Vinicius Henning +2
The electromagnetic Casimir interaction between two spheres is studied within the scattering approach using the plane-wave basis. It is demonstrated that the proximity force approx…
Plasma vs Drude modelling of the Casimir force: beyond the proximity force approximation
Michael Hartmann, Gert-Ludwig Ingold, Paulo A. Maia Neto
We calculate the Casimir force and its gradient between a spherical and a planar gold surface. Significant numerical improvements allow us to extend the range of accessible paramet…
Disentangling geometric and dissipative origins of negative Casimir entropies
Stefan Umrath, Michael Hartmann, Gert-Ludwig Ingold +1
Dissipative electromagnetic response and scattering geometry are potential sources for the appearance of a negative Casimir entropy. We show that the dissipative contribution famil…
Geometric origin of negative Casimir entropies: A scattering-channel analysis
Gert-Ludwig Ingold, Stefan Umrath, Michael Hartmann +4
Negative values of the Casimir entropy occur quite frequently at low temperatures in arrangements of metallic objects. The physical reason lies either in the dissipative nature of…