TL;DR
This paper investigates the gravitational effects of vacuumless cosmic strings within Brans-Dicke theory, revealing they can be either attractive or repulsive, unlike in General Relativity.
Contribution
It demonstrates that vacuumless cosmic strings in Brans-Dicke theory can produce both attractive and repulsive gravity, a novel finding compared to previous models in General Relativity.
Findings
Strings can have repulsive gravitational effects
Both global and gauge strings studied
Results differ from General Relativity predictions
Abstract
The gravitational fields of vacuumless global and gauge strings have been studied in Brans-Dicke theory under the weak field assumption of the field equations. It has been shown that both global and gauge string can have repulsive as well as attractive gravitational effect in Brans-Dicke theory which is not so in General Relativity.
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