Gilly Elor

R.Aoude, G.Elor, G. N.Remmen, and O.Sumensari, “Positivity in Amplitudes and Quantum Entanglement.” Fortschritte der Physik74, no. 5 (2026): e70113. https://doi.org/10.1002/prop.70113 Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement Data sharing is not applicable to this article as no datasets were generated or analyzed during the current study.

We introduce the anarchic axion, a class of axion models which solves the strong CP problem within current nEDM constraints with a lighter than usual QCD axion, thus populating new parameter space that ongoing and future experiments target. The anarchic axion is driven light by a soft breaking of the Peccei-Quinn symmetry, which also predicts a residual neutron electric dipole moment. We introduce a novel measure to quantify the tuning required for large deviations from the usual QCD axion band.

Abstract We estimate the maximum direct detection cross section for sub-GeV dark matter (DM) scattering off nucleons. For DM masses in the range 10 keV–100 MeV, cross sections greater than 10−36−10−30cm2 seem implausible. We present a DM candidate which realizes this maximum cross section: highly interactive particle relics (HYPERs). After HYPERs freeze-in, a dark sector phase transition decreases the mediator’s mass.