Graph Rewriting for Lattice Topological Invariants

2024 ж. 6 Нау.
175 Рет қаралды

We are going to study finite lattice systems in the context of simple rewriting rules: based on discrete manifolds and Cayley graphs, in this project we look for the set and taxonomy of simple rewriting rules that preserve certain properties that can later be understood as conserved measurable magnitudes of a physical system, like the Brouwer degree or winding number. By investigating those toy models about field configurations of discrete fiber bundles, we will later apply local perturbations to a field configuration, looking for discrete analogs to Noether's theorem. Furthermore, via coloured graphs, with this approach we will aim to characterise (energetically stable) physical-inspired systems in the context of many-particle quantum finite distributions in highly symmetric arrays or low-dimensional spin-like states as domain wall in magnetization theory, being local solutions of minimal information configurations. Even mesoscopic scale is responsible for exotic topological defects; with this discretization, we will try to understand the computational first-principle mechanism that allows nontrivial winding numbers and the material and geometries to host pseudo-particle structures like skyrmions, bubbles or merons. We think that this inductive reasoning here would offer a valuable approach for finding new phenomena or even reinterpreting old ones.

Пікірлер
  • Good direction. Glad to see these improvements. Shout out to Stephen, keep it up 👍

    @JAYMOAP@JAYMOAP2 ай бұрын
  • New Skyrme parametrizations to describe finite nuclei and neutron star matter with realistic effective masses Authors: Mingya Duan, Michael Urban Abstract: The phenomenological Skyrme energy density functional theory is one of the most popular theories for dealing with finite nuclei and infinite nuclear matter, including neutron star matter. However, in a recent study we reported the problem that in many Skyrme functionals, the neutron Fermi velocity exceeds the speed of light at densities that exist in neutron-star cores. To solve this problem, we try to construct new Skyrme parametrizations by including constraints from microscopic calculations of the effective mass in addition to binding energies and charge radii of finite nuclei and different microscopic equations of state of pure neutron matter. We give the parameters of the new Skyrme forces and show that our new effective interactions can successfully describe properties of finite nuclei (including the weak radius and the neutron-skin thickness of 208Pb which were not fitted) and nuclear matter (including pure neutron matter, symmetric nuclear matter, and neutron star matter

    @JAYMOAP@JAYMOAP2 ай бұрын
KZhead