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Journal Article
Tachyonic Field Coupled with Global Monopole
2024
Overview
As the early universe expanded, phase transitions occurred which resulted in the formation of different types of topological defects. Specifically, the self-coupling scalar field triplet
ϕ
a
was responsible for the creation of global monopoles, which are massive objects that arise during these phase transitions. The initial global symmetry of
O
(3) undergoes a process of spontaneous breaking, resulting in U(1) symmetry. In this paper we describe a model of global monopole consisting of the Higgs triplet of scalar fields with Tachyonic fluid described by the relativistic Lagrangian
L
Tach
=
-
V
(
ϕ
a
)
1
+
g
μ
ν
∂
μ
ϕ
a
∂
ν
ϕ
a
. In the weak field approximation, we were able to discover the solution for the scalar field and space-time produced by the global monopole and the Einstein equation that emerges from these scenario exhibits a high degree of non-linearity. Our investigation focused on determining whether the global monopole produces gravitational pull on a test particle that is in motion within its spacetime. Finally, we have calculated the bending of light due to gravitational field of this global monopole.
Publisher
Springer US,Springer Nature B.V
