Xp. Wang, ON THE EXISTENCE OF NONTRIVIAL SOLUTIONS FOR A SCALAR LIGHT-NEMATIC SYSTEM AND ITS FREDERIKS TRANSITION THRESHOLD, SIAM journal on applied mathematics (Print), 58(6), 1998, pp. 1852-1861
We study the existence of nontrivial solutions for a paraxial model fo
r optical self-focusing in a nematic liquid crystal. We prove that the
re exists a threshold input intensity called Frederiks transition, abo
ve which a nontrivial solution exists.