Effects of Exponential Nonlinear Electrodynamics and External Magnetic Field on Holographic Superconductors
| Autor: | Ahmad Sheykhi, Z. Abdollahzadeh |
|---|---|
| Přispěvatelé: | Biruni Üniversitesi |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Superconductivity
Physics Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics General Mathematics Critical phenomena Horizon Operator (physics) Exponential nonlinear electrodynamics 01 natural sciences Magnetic field Nonlinear system External magnetic field Mean field theory Quantum electrodynamics 0103 physical sciences Holographic superconductor 010306 general physics Critical exponent |
| Popis: | We investigate the effects of an external magnetic field as well as exponential nonlinear electrodynamics on the properties of s-wave holographic superconductors. Our strategy for this study is the matching method, which is based on the match of the solutions near the horizon and on the boundary at some intermediate point. When the magnetic field is turned off, we obtain the critical temperature as well as the condensation operator and show that the critical exponent is still 1/2, which is the universal value in the mean field theory. Then, we turn on the magnetic field and obtain the critical magnetic field, Bc, in order to study its behavior in terms of the temperature. Interestingly enough, we find that in the presence of exponential nonlinear electrodynamics, the critical temperature decreases, while the critical magnetic field increases compared to the Maxwell case. We also observe that the critical magnetic field increases with increasing the nonlinear parameter b. © 2017, Springer Science+Business Media, LLC, part of Springer Nature. Research Institute for Astronomy and Astrophysics of Maragha |
| Databáze: | OpenAIRE |
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