We introduce a recursive bosonic quantization technique for generating classical parity-time (PT ) photonic structures that possess hidden symmetries and higher-order exceptional points. We study light transport in these geometries and we demonstrate that perfect state transfer is possible only for certain initial conditions. Moreover, we show that for the same propagation direction, left and r...

The propagation of torsional waves in a prestressed fiber-reinforced half-space under the effect of magnetic field and gravity has been discussed. The problem has been solved analytically using Whittaker function to obtain the exact solution frequency equations. Numerical results for stress, gravity and magnetic field are given and illustrated graphically. Comparisons are made with the results ...

Many numerical models of magnetospheric dynamics treat the ionosphere as an inner boundary condition. These models have traditionally used the current continuity condition, treating the ionosphere as a sheet current in which the electric field is electrostatic. A more general boundary condition is suggested that not only is more complete, but also straightforward to implement. Results from a mo...

to determine suitable planting date and predicting emergence time in field conditions of iranian sugar beet cultivars we need some information including base temperature (t base) and heat units (hu). in this research germination tests were conducted on the seed of seven iranian monogerm sugar beet cultivars at various temperatures (3 to 36 ºc) with 3 ºc intervals. also field emergence was evalu...