STABILITY OF Z-STRINGS IN STRONG MAGNETIC FIELDS

Details STABILITY OF Z-STRINGS IN STRONG MAGNETIC FIELDS STABILITY OF Z-STRINGS IN STRONG MAGNETIC FIELDS

1995-05-30

arxiv.org/abs/hep-ph/9505424v1

Phys.Rev.Lett. 75 (1995) 2268-2271

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 uuencoded figs ,LaTeX (RevTeX). A postcript version can be obtained via anonymous ftp at ftp://ftp.ifae.es/preprin

Scientific paper

10.1103/PhysRevLett.75.2268

We show that the Z-strings of the standard electroweak theory can be stabilized by strong external magnetic fields, provided that $\beta^{1/2} \equiv M_H/M_Z\leq 1$, where $M_H$ and $M_Z$ are the Higgs and Z masses. The magnetic fields needed are larger than $\beta^{1/2} B_c$ and smaller than $B_c$, where $B_c\equiv M^2_W/e$ is the critical magnetic field which causes W-condensation in the usual broken phase vacuum. If such magnetic fields were present after the electroweak transition, they would stabilize strings for a period comparable to the inverse Hubble rate at that time. Pair creation of monopoles and antimonopoles linked by segments of string is briefly considered.

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