Extended thermodynamic analysis of a charged Horndeski black hole
We perform the thermodynamic analysis of a charged Horndeski black hole (CHB) with mass m and charge q obtained from the Einstein-Horndeski-Maxwell theory. There are two solution branches: one is for the CHB and the other is for the naked singularity (NS). Thermodynamic behavior for the CHB is simil...
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| Language: | English |
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Elsevier
2025-07-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325002849 |
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| author | Yun Soo Myung |
| author_facet | Yun Soo Myung |
| author_sort | Yun Soo Myung |
| collection | DOAJ |
| description | We perform the thermodynamic analysis of a charged Horndeski black hole (CHB) with mass m and charge q obtained from the Einstein-Horndeski-Maxwell theory. There are two solution branches: one is for the CHB and the other is for the naked singularity (NS). Thermodynamic behavior for the CHB is similar to that for the Reissner-Nordström black hole but its Helmholtz free energy is always positive. If the NS point is included as an extremal point, then the Helmholtz free energy is always negative, implying that the globally stable region is achieved anywhere. For the NS, its temperature has a maximum point, its heat capacity remains negative without having Davies point, and its free energy decreases without limitation as the charge q increases. |
| format | Article |
| id | doaj-art-ee96d008f6ca45c2ad65c6111f33bf64 |
| institution | OA Journals |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-ee96d008f6ca45c2ad65c6111f33bf642025-08-20T02:16:18ZengElsevierPhysics Letters B0370-26932025-07-0186613952310.1016/j.physletb.2025.139523Extended thermodynamic analysis of a charged Horndeski black holeYun Soo Myung0Center for Quantum Spacetime, Sogang University, Seoul 04107, Republic of KoreaWe perform the thermodynamic analysis of a charged Horndeski black hole (CHB) with mass m and charge q obtained from the Einstein-Horndeski-Maxwell theory. There are two solution branches: one is for the CHB and the other is for the naked singularity (NS). Thermodynamic behavior for the CHB is similar to that for the Reissner-Nordström black hole but its Helmholtz free energy is always positive. If the NS point is included as an extremal point, then the Helmholtz free energy is always negative, implying that the globally stable region is achieved anywhere. For the NS, its temperature has a maximum point, its heat capacity remains negative without having Davies point, and its free energy decreases without limitation as the charge q increases.http://www.sciencedirect.com/science/article/pii/S0370269325002849 |
| spellingShingle | Yun Soo Myung Extended thermodynamic analysis of a charged Horndeski black hole Physics Letters B |
| title | Extended thermodynamic analysis of a charged Horndeski black hole |
| title_full | Extended thermodynamic analysis of a charged Horndeski black hole |
| title_fullStr | Extended thermodynamic analysis of a charged Horndeski black hole |
| title_full_unstemmed | Extended thermodynamic analysis of a charged Horndeski black hole |
| title_short | Extended thermodynamic analysis of a charged Horndeski black hole |
| title_sort | extended thermodynamic analysis of a charged horndeski black hole |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325002849 |
| work_keys_str_mv | AT yunsoomyung extendedthermodynamicanalysisofachargedhorndeskiblackhole |