From the reviews: "...useful for experts in mathematical physics...this is a very interesting book, which deserves to be found in any physical library." (OPTICS
Several well-established geometric and topological methods are used in this work in an application to a beautiful physical phenomenon known as the geometric pha
During the last few years, considerable interest has been focused on the phase that waves accumulate when the equations governing the waves vary slowly. The rec
During the last few years, considerable interest has been focused on the phase that waves accumulate when the equations governing the waves vary slowly. The rec