Gravity of Global U(1) Cosmic String |
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Authors: | Boris E. Meierovich |
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Affiliation: | (1) P. L. Kapitza Institute of Physics Problems 2 Kosygina Str., Moscow, 117334, Russia |
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Abstract: | We show that a static one-dimensional U(1) global string is confined by its own gravitational field to a finite radius. The energy-momentum tensor of a global string decreases exponentially with the distance from its core. We call it self-localization. We show that the order parameter is a decreasing function of the symmetry breaking energy scale. We have found the maximum value of the energy scale max, where the order parameter vanishes. Beyond the maximum value > max the gravitational field of a global string gets so strong, that it restores the initial unbroken symmetry. In the close vicinity of the maximum value max of the symmetry breaking scale we get a closed-form solution for the metric. It reduces to the Galileo metric on the axis and transforms into the Kasner-type solution near the boundary of a string. |
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Keywords: | Symmetry break-down string |
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