scholarly journals Global monopoles in Brans-Dicke theory of gravity

1997 ◽  
Vol 56 (10) ◽  
pp. 6688-6691 ◽  
Author(s):  
A. Barros ◽  
C. Romero
Keyword(s):  
Theory Of Gravity ◽  
Global Monopoles

Global monopole in a broken-symmetric theory of gravitation

2017 ◽  
Vol 32 (13) ◽  
pp. 1750061
Author(s):  
Buddhi Vallabh Tripathi ◽  
Hemwati Nandan ◽  
K. D. Purohit
Keyword(s):  
Symmetry Breaking ◽  
Scalar Tensor Theory ◽  
Global Monopole ◽  
Tensor Theory ◽  
Theory Of Gravitation ◽  
Theory Of Gravity ◽  
Global Monopoles ◽  
Symmetric Theory ◽  
Breaking Scale ◽  
Einstein’S General Relativity

We investigate global monopole solutions in a particular kind of scalar–tensor theory of gravity, viz. the broken-symmetric theory of gravity. Invoking the “hedgehog” ansatz for the scalar field, we derive the metric corresponding to global monopole solutions. The global monopole solutions found are independent of the scale of symmetry breaking unlike the Barriola–Vilenkin global monopoles in Einstein’s General Relativity (GR) which intrinsically depend on the symmetry breaking scale.

scholarly journals Corners of gravity: the case of gravity as a constrained BF theory

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Remigiusz Durka ◽  
Jerzy Kowalski-Glikman
Keyword(s):  
Cosmological Constant ◽  
Boundary Structure ◽  
Schwarzschild Solution ◽  
Bf Theory ◽  
Theory Of Gravity

Abstract Following recent works on corner charges we investigate the boundary structure in the case of the theory of gravity formulated as a constrained BF theory. This allows us not only to introduce the cosmological constant, but also explore the influence of the topological terms present in the action of this theory. Established formulas for charges resemble previously obtained ones, but we show that they are affected by the presence of the cosmological constant and topological terms. As an example we discuss the charges in the case of the AdS-Schwarzschild solution and we find that the charges give correct values.

Black hole solutions and thermodynamics in the infinite derivative theory of gravity

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Yong Xiao ◽  
Yong Chen ◽  
Haiyuan Feng ◽  
Chenrui Zhu
Keyword(s):  
Black Hole ◽  
Theory Of Gravity ◽  
Infinite Derivative ◽  
Black Hole Solutions

scholarly journals Magnetic Global Monopoles from Torsion

2018 ◽  
Vol 182 ◽  
pp. 02110
Author(s):  
Sarben Sarkar
Keyword(s):  
Classical Solution ◽  
Magnetic Charge ◽  
New Physics ◽  
Axion Field ◽  
Global Monopoles

In the search of avatars of new physics, we present a new classical solution for electromagnetic monopoles induced by global gravitational monopoles in the presence of a four-dimensional Kalb-Ramond axion field. The torsion induces the magnetic charge of the monopole.

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