Critical behavior of charged dilaton black holes in AdS space
| Autor: | Dehyadegari, Amin, Sheykhi, Ahmad |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 102, 064021 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.102.064021 |
| Popis: | We revisit critical behaviour and phase structure of charged anti-deSitter (AdS) dilaton black holes for arbitrary values of dilaton coupling $\alpha$, and realize several novel phase behaviour for this system. We adopt the viewpoint that cosmological constant (pressure) is fixed and treat the charge of the black hole as a thermodynamical variable. We study critical behaviour and phase structure by analyzing the phase diagrams in $T-S$ and $ q-T$ planes. We numerically derive the critical point in terms of $\alpha$ and observe that for $\alpha =1$ and $\alpha \geq \sqrt{3}$, the system does not admit any critical point, while for $0<\alpha <1$, the critical quantities are not significantly affected by $\alpha$. We find that unstable behavior of the Gibbs free energy for $q Comment: 8 pages, 10 figures |
| Databáze: | arXiv |
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