3 papers
hep-ph2026
Photon emission from rotating plasmas: a generalized McLerran-Toimela formula and the onset of superradiance
Kirill Tuchin
The photon emission and absorption spectra of a plasma rotating with constant angular velocity are derived in terms of the spectral function of the current--current correlator.…
math.SG2026
Bott-integrable contact forms with large systolic ratio
Hansjörg Geiges, Jakob Hedicke, Murat SaÄlam
We show that there is no universal upper bound for the systolic ratio of Bott-integrable contact forms on closed 3-manifolds, thus providing further evidence for the relative flexi…
math.SG2025
Non-orderability and the contact Hofer norm
Jakob Hedicke, Egor Shelukhin
We relate non-orderability in contact topology to shortening in the contact Hofer norm. Combined with considerations of open books, this provides many new examples of non-orderable…