Wiggly Strings in Linearized Brans-Dicke Gravity
Andres Arazi, Claudio Simeone
TL;DR
This paper investigates the gravitational effects of wiggly cosmic strings within linearized Brans-Dicke theory, analyzing particle motion and light paths to understand their influence on spacetime and photon trajectories.
Contribution
It provides the first calculation of the metric around wiggly cosmic strings in linearized Brans-Dicke gravity and explores particle and light dynamics in this context.
Findings
Photon trajectories can be bounded near wiggly strings.
The metric around wiggly strings differs from the standard cosmic string solution.
Particle motion is affected by the string's wiggles in the Brans-Dicke framework.
Abstract
The metric around a wiggly cosmic string is calculated in the linear approximation of Brans-Dicke theory of gravitation. The equations of motion for relativistic and non-relativistic particles in this metric are obtained. Light propagation is also studied and it is shown that photon trajectories can be bounded.
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