| 1 | Extended phase space thermodynamics of black hole with non-linear electrodynamic field显示文摘This paper deals with the thermodynamical properties of the black hole formulated in Einstein’s theory of relativity associated with a nonlinear electromagnetic field.The transition of the black hole is analyzed using the mass,electric charge,coupling constant,and cosmological constant.We examine the thermodynamical aspects of exact black hole solutions to compute the black hole mass,temperature,entropy,Gibbs free energy,specific heat,and critical exponents in the phase space.Further,we study the stability of the black hole solution using the specific heat and Gibbs free energy.We examine the first and second phase changes and show a P-V criticality,which is similar to the van der Waals phase change.We also examine the equation of the state and the critical exponents. | G.Abbas R.H.Ali | 2023 | Chinese Physics C2023，47，6： | 0 |
| 2 | Thermodynamics under the impact of thermal fluctuations and quasi-normal modes of Euler-Heisenberg AdS BH in the framework of NLED显示文摘We study the impact of thermal fluctuations on the thermodynamics,quasi-normal modes,and phase transitions of an anti-de Sitter Euler-Heisenberg black hole(BH)with a nonlinear electrodynamic field.An anti-de Sitter Euler-Heisenberg BH with a nonlinear electrodynamic field is composed of four parameters:the mass,electric charge,cosmological constant,and Euler-Heisenberg parameter.We calculate thermodynamic variables such as Hawking temperature,entropy,volume,and specific heat,which comply with the first law of thermodynamics.First,we use this BH to determine the thermodynamics and thermal fluctuations with the Euler-Heisenberg parameter to distinguish their effect on uncorrected and corrected thermodynamical quantities.We derive the expression for corrected entropy to study the impact of thermal fluctuation with simple logarithmic corrections on unmodified thermodynamical potentials,including Helmholtz energy,pressure,Gibbs free energy,and enthalpy.The Euler-Heisenberg parameter improves BH stability at large radii.Second,we analyze the local stability of the proposed BH,and the phase shifts of the BH are also investigated using temperature and specific heat.When there is a decrease in charge and an increase in r_(+)andα,the temperature shifts from an unstable region to a stable one.Similarly,increases in local stability are observed with each of these parameters.Third,we use null geodesics to deal with the effects of nonlinear electrodynamics on the quasi-normal modes of the Euler-Heisenberg anti-de Sitter BH.The null geodesics provide the angular velocity and Lyapunov exponent of the photon sphere,which are the same as the real and imaginary parts of the quasi-normal modes in the eikonal limit. | R.H.Ali G.Abbas | 2023 | Chinese Physics C2023，47，11： | 0 |
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