Decay of nonsingular vortex in superf luid 3He-A near the transition to the A1 phase
Volovik G. E. , Kharadze G. A.
Vortices in 3He-A in a strong magnetic field near the transition to the A x phase are discussed. It is shown that a nonsingular vortex with two quanta of circulation splits into two nonsingular single-quantum Mermin-Ho vortices. The distance between the Mermin-Ho vortices in a vortex pair diverges near the transition to the A, phase. The possibility for observing this effect in experiments with ultrasound is discussed.