Paley-Wiener-type theorem for a class of integral transforms arising from a singular Dirac system.
Periodic solutions to a -Laplacian neutral Rayleigh equation with deviating argument
By using the coincidence degree theory, we study a type of -Laplacian neutral Rayleigh functional differential equation with deviating argument to establish new results on the existence of -periodic solutions.
Positive solutions for singular Sturm-Liouville boundary value problems with integral boundary conditions.
Positive solutions for singular Sturm-Liouville boundary value problems on the half line.
Positive solutions for third-order Sturm-Liouville boundary-value problems with -Laplacian.
Positive solutions for two-point semipositone right focal eigenvalue problem.
Properties of non-hermitian quantum field theories
In this paper I discuss quantum systems whose Hamiltonians are non-Hermitian but whose energy levels are all real and positive. Such theories are required to be symmetric under , but not symmetric under and separately. Recently, quantum mechanical systems having such properties have been investigated in detail. In this paper I extend the results to quantum field theories. Among the systems that I discuss are and theories. These theories all have unexpected and remarkable properties. I discuss...