Nonlinear wave-Klein–Gordon systems occupy a central role in modern mathematical physics, as they intertwine the dynamics of massless waves with those of massive fields. These systems encapsulate a ...
image: (a) The band gap structure of the B-AsxP1-x (x = 0.4) NSs; (b) The 2D B-AsP NSs dispersions used in our experiment, and the Tyndall effect observed as the laser beams transmitted through the ...