Dynamically Assisted Schwinger Effect at Strong Coupling with Its Holographic Extension
arXiv:1811.11712 · doi:10.1140/epjc/s10052-019-7405-0
Abstract
At strong-coupling and weak-field limit, the scalar Schwinger effect is studied by the field-theoretical method of worldline instantons for dynamic fields of single-pulse and sinusoidal types. By examining the Wilson loop along the closed instanton path, corrections to the results obtained from weak-coupling approximations are discovered. They show that this part of contribution for production rate becomes dominant as Keldysh parameter increases, it makes the consideration at strong coupling turn out to be indispensable for dynamic fields. Moreover a breaking of weak-field condition similar to constant field also happens around the critical field, defined as a point of vacuum cascade. In order to make certain whether the vacuum cascade occurs beyond the weak-field condition, following Semenoff and Zarembo's proposal, the Schwinger effects of dynamic fields are studied with an supersymmetric Yang--Mills theory in the Coulomb phase. With the help of the gauge/gravity duality, the vacuum decay rate is evaluated by the string action with instanton worldline as boundary, which is located on a probe D3-brane. The corresponding classical worldsheets are estimated by perturbing the integrable case of a constant field.
arXiv comment13 pages, 7 figures, two columns. Revision according to review. Appendices for proofs added
References in corpus (18)
- Perturbative Quantum Field Theory in the String-Inspired Formalism
- Electron-positron pairs in physics and astrophysics: from heavy nuclei to black holes
- Worldline Instantons and Pair Production in Inhomogeneous Fields
- Worldline Instantons II: The Fluctuation Prefactor
- New Strong-Field QED Effects at ELI: Nonperturbative Vacuum Pair Production
- Schwinger mechanism revisited
- Holographic Schwinger Effect
- On the exact solution of the accelerating string in space
- Schwinger type processes via branes and their gravity duals
- Holographic description of the Schwinger effect in electric and magnetic fields
- Non-Perturbative Quark-Antiquark Production From a Constant Chromo-Electric Field via the Schwinger Mechanism
- Soft-Gluon Production Due to a Gluon Loop in a Constant Chromo-Electric Background Field
- Universal aspects of holographic Schwinger effect in general backgrounds
- Holographic Schwinger effect in confining phase
- Potential Analysis in Holographic Schwinger Effect
- The Schwinger pair production rate in confining theories via holography
- A holographic description of the Schwinger effect in a confining gauge theory
- Wilson loops and minimal area surfaces in hyperbolic space