High-Symmetry Polarization Domains in Low-Symmetry Ferroelectrics

Symmetry of Fullerene C_60

Analysis of Symmetry of Weight-Bearing in Athletes With and Without Low Back Pain during Gait

Background. Low Back Pain (LBP) is a prevalent phenomenon in athletes and asymmetrical loading on the limbs has been proposed as a risk factor related to this disease. Objectives. The purpose of the present study was to compare the asymmetry of loading applied on the legs between men with and without LBP during gait. Methods. A total of 40 participants, comprising 20 men with non-specific LBP...

Breaking of Nanotube Symmetry by Substrate Polarization

Substrate and nanotube polarization are shown to qualitatively change a nanotube bandstructure. The effect is studied in a linear approximation in an external potential which causes the changes. A work function difference between the nanotube and gold surface is estimated to be large enough to break the band symmetry and lift a degeneracy of a lowest but one subband of a metallic nanotube. This...

High Temperature Symmetry Nonrestoration

Naively one expects that at low temperature a system has less symmetry than at high temperature. However, there are cases in nature, where the opposite happens. This phenomenon is called inverse symmetry breaking. A very similar phenomenon is symmetry nonrestoration at high temperature. It appears when the system has at high T less symmetry than allowed by the Lagrangian, which means that some ...

High Field Polarization Response in Ferroelectrics: Current Solutions and Challenges

Polarization response including ergodicity breaking and the divergence of relaxation time is reproduced for model Hamiltonians of growing complexity. Systematic derivation of the dynamical equations and its solutions is based on the Fokker-Planck and imaginary time Schrödinger equation techniques with subsequent symplectic integration. Test solutions are addressed to finite size and spatially e...