Speaker
Description
For liquid crystals there are experimentally recreated long-range e.g. Coulomb-like interactions between topological charges. Combining liquid crystal Landau-de Gennes model having Higgs-like potential of SO(3) vacuum, with 4-th order Skyrme term, we get effective Coulomb potential with Gauss law counting topological charge, then electromagnetism from Lorentz invariance. Regularization of singularities leads to low distance/high energy deformation of Coulomb in agreement with the running coupling effect.
There also appear topological vortices in agreement with QCD flux tubes/quark strings, allowing fractional charge xcitations for quarks, with conflict between them of asymptotically linear energy – recreating QCD Cornell potential. Baryon-like structures get structural tendency for positive core, which for neutron must be compensated – explaining why it is heavier than proton, or why deuteron has electric quadrupole moment. These quark strings seem also crucial for nuclear binding, including halo nucleons (arXiv:2108.07896).
Slides: https://www.dropbox.com/scl/fi/p1ydy45sngzw8ubk1thhx/liquid-crystal-particles.pdf?rlkey=n4202c6bjntcfo2hso4mapqeu&dl=0