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Global monopole in a Ricci-coupled Kalb–Ramond bumblebee gravity.

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Title: Global monopole in a Ricci-coupled Kalb–Ramond bumblebee gravity.
Authors: Belchior, Fernando M.1 (AUTHOR) belchior@fisica.ufc.br, Maluf, Roberto V.1 (AUTHOR) r.v.maluf@fisica.ufc.br, Petrov, Albert Yu.2 (AUTHOR) petrov@fisica.ufpb.br, Porfírio, Paulo J.2 (AUTHOR) pporfirio@fisica.ufpb.br
Source: European Physical Journal C -- Particles & Fields. Jun2025, Vol. 85 Issue 6, p1-15. 15p.
Subjects: Lorentz invariance, Deflection (Light), Black holes, Symmetry breaking, Bumblebees
Abstract: In this paper, we investigate black hole solutions in Einstein–Kalb–Ramond (EKR) bumblebee gravity sourced by a global monopole characterized by the charge η . This modified theory of gravity possesses the notable feature of incorporating local Lorentz symmetry breaking (LSB) via a spontaneous symmetry-breaking mechanism. We solve the field equations for a static and spherically symmetric metric with the Kalb–Ramond (KR) field fixed at its VEV, thereby obtaining new black hole solutions. These solutions simultaneously exhibit the LSB effects, codified by the γ parameter, and the global monopole effects, codified by the charge η . Next, we study the impact of the global monopole and LSB corrections on two classical tests, namely, the advance of Mercury's perihelion and the light deflection. Furthermore, we compute the Hawking temperature, black hole shadows, and greybody factors. Ultimately, we investigate the processes of scattering and absorption of a massless scalar field by employing the partial wave method. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Global monopole in a Ricci-coupled Kalb–Ramond bumblebee gravity.
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  Data: <searchLink fieldCode="AR" term="%22Belchior%2C+Fernando+M%2E%22">Belchior, Fernando M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> belchior@fisica.ufc.br</i><br /><searchLink fieldCode="AR" term="%22Maluf%2C+Roberto+V%2E%22">Maluf, Roberto V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> r.v.maluf@fisica.ufc.br</i><br /><searchLink fieldCode="AR" term="%22Petrov%2C+Albert+Yu%2E%22">Petrov, Albert Yu.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> petrov@fisica.ufpb.br</i><br /><searchLink fieldCode="AR" term="%22Porfírio%2C+Paulo+J%2E%22">Porfírio, Paulo J.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> pporfirio@fisica.ufpb.br</i>
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Jun2025, Vol. 85 Issue 6, p1-15. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Lorentz+invariance%22">Lorentz invariance</searchLink><br /><searchLink fieldCode="DE" term="%22Deflection+%28Light%29%22">Deflection (Light)</searchLink><br /><searchLink fieldCode="DE" term="%22Black+holes%22">Black holes</searchLink><br /><searchLink fieldCode="DE" term="%22Symmetry+breaking%22">Symmetry breaking</searchLink><br /><searchLink fieldCode="DE" term="%22Bumblebees%22">Bumblebees</searchLink>
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  Data: In this paper, we investigate black hole solutions in Einstein–Kalb–Ramond (EKR) bumblebee gravity sourced by a global monopole characterized by the charge η . This modified theory of gravity possesses the notable feature of incorporating local Lorentz symmetry breaking (LSB) via a spontaneous symmetry-breaking mechanism. We solve the field equations for a static and spherically symmetric metric with the Kalb–Ramond (KR) field fixed at its VEV, thereby obtaining new black hole solutions. These solutions simultaneously exhibit the LSB effects, codified by the γ parameter, and the global monopole effects, codified by the charge η . Next, we study the impact of the global monopole and LSB corrections on two classical tests, namely, the advance of Mercury's perihelion and the light deflection. Furthermore, we compute the Hawking temperature, black hole shadows, and greybody factors. Ultimately, we investigate the processes of scattering and absorption of a massless scalar field by employing the partial wave method. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1140/epjc/s10052-025-14390-9
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      – Code: eng
        Text: English
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        PageCount: 15
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      – SubjectFull: Lorentz invariance
        Type: general
      – SubjectFull: Deflection (Light)
        Type: general
      – SubjectFull: Black holes
        Type: general
      – SubjectFull: Symmetry breaking
        Type: general
      – SubjectFull: Bumblebees
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      – TitleFull: Global monopole in a Ricci-coupled Kalb–Ramond bumblebee gravity.
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            NameFull: Maluf, Roberto V.
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            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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