Effect of electromagnetic fields on deformed AdS_5 models
arXiv:2003.06848 · doi:10.1103/PhysRevD.101.126011
Abstract
The response of a QCD-like gauge theory, holographically dual to a deformed model, to constant electromagnetic fields is thoroughly investigated. The calculations in this paper are performed for three different cases, i.e., with only a quadratic correction, with only a logarithmic correction, and with both quadratic and logarithmic corrections, for which the parameters are chosen as the ones found in \cite{quadlog} by fitting to experimental and lattice results. The critical electric fields of the system are found by analyzing its total potential. Comparing the total potential for the three cases, we observe that the quarks can be liberated easier in quadratic and then logarithmic case, for a given electric field. Then, by calculating the expectation value of a circular Wilson loop, the pair production rate is evaluated while a constant electric field as well as a constant magnetic field are present. The aforementioned result obtained from the potential analysis is also confirmed here when no magnetic fields are present. We moreover find that the presence of a magnetic field perpendicular to the direction of the electric field suppresses the rate of producing the quark pairs and accordingly increases the critical electric field below which the Schwinger effect does not occur. Interestingly, the presence of a parallel magnetic field alone does not change the response of the system to the external electric field, although it enhances the creation rate when a perpendicular magnetic field is also present.
References in corpus (27)
- Gauge Theory Correlators from Non-Critical String Theory
- The Large N Limit of Superconformal Field Theories and Supergravity
- The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
- Linear Confinement and AdS/QCD
- Hard Scattering and Gauge/String Duality
- Event-by-event generation of electromagnetic fields in heavy-ion collisions
- Electromagnetic field evolution in relativistic heavy-ion collisions
- Heavy-Quark Potentials and AdS/QCD
- 1/q^2 Corrections and Gauge/String Duality
- The Spatial String Tension, Thermal Phase Transition, and AdS/QCD
- Holographic Schwinger Effect
- Holographic Schwinger effect in de Sitter space
- Light-Front Holography and Gauge/Gravity Duality: The Light Meson and Baryon Spectra
- Schwinger Effect and Entanglement Entropy in Confining Geometries
- Holographic description of the Schwinger effect in electric and magnetic fields
- Universal aspects of holographic Schwinger effect in general backgrounds
- Holographic Schwinger effect in confining phase
- Comments on Critical Electric and Magnetic Fields from Holography
- Potential Analysis in Holographic Schwinger Effect
- Logarithmic correction in the deformed model to produce the heavy quark potential and QCD beta function
- The Schwinger pair production rate in confining theories via holography
- A holographic description of the Schwinger effect in a confining gauge theory
- Chiral magnetic currents with QGP medium response in heavy ion collisions at RHIC and LHC energies
- Holographic Schwinger Effect in a D-Instanton Background
- AdS/QCD, Entanglement Entropy and Critical Temperature
- Holographic Schwinger effect in a confining background with Gauss-Bonnet corrections
- Confining D-Instanton Background in an External Electric Field