Induced energy-momentum tensor in de Sitter scalar QED and its implication for induced current
arXiv:2301.04227 · doi:10.1103/PhysRevD.107.125001
Abstract
The aim of this research is to investigate the vacuum energy-momentum tensor of a quantized, massive, nonminimally coupled scalar field induced by a uniform electric field background in a four-dimensional de Sitter spacetime ($\dsf$). We compute the expectation value of the energy-momentum tensor in the in-vacuum state and then regularize it using the adiabatic subtraction procedure. The correct trace anomaly of the induced energy-momentum tensor that confirmed our results is significant. The nonconservation equation for the induced energy-momentum tensor imposes the renormalization condition for the induced electric current of the scalar field. The findings of this research indicate that there are significant differences between the two induced currents which are regularized by this renormalization condition and the minimal subtraction condition.
arXiv comment24 pages, 4 figures
References in corpus (49)
- Cosmological Magnetic Fields: Their Generation, Evolution and Observation
- Gauge Fields and Inflation
- Local Wick Polynomials and Time Ordered Products of Quantum Fields in Curved Spacetime
- Stochastic Inflationary Scalar Electrodynamics
- Schwinger mechanism revisited
- Cosmological Dark Energy: Prospects for a Dynamical Theory
- Schwinger Effect in 4D de Sitter Space and Constraints on Magnetogenesis in the Early Universe
- On the Instability of Global de Sitter Space to Particle Creation
- The Cosmological Constant Problem and Running Vacuum in the Expanding Universe
- Schwinger effect in de Sitter space
- Nucleation Rates in Flat and Curved Space
- Energy-Momentum Tensor of Particles Created in an Expanding Universe
- Two loop stress-energy tensor for inflationary scalar electrodynamics
- Two Loop Scalar Bilinears for Inflationary SQED
- Quantum Vacuum Instability of 'Eternal' de Sitter Space
- Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
- Backreaction of electromagnetic fields and the Schwinger effect in pseudoscalar inflation magnetogenesis
- Fermionic Schwinger effect and induced current in de Sitter space
- Attractor states and infrared scaling in de Sitter space
- Fermionic current and Schwinger effect in de Sitter spacetime
- Schwinger Pair Production in dS_2 and AdS_2
- Creation of spin 1/2 particles by an electric field in de Sitter space
- Dynamics of Relaxed Inflation
- Influence of backreaction of electric fields and Schwinger effect on inflationary magnetogenesis
- Effect of a magnetic field on Schwinger mechanism in de Sitter spacetime
- Scalar current of created pairs by Schwinger mechanism in de Sitter spacetime
- Direct -function approach and renormalization of one-loop stress tensors in curved spacetimes
- One-Loop Effective Action and Schwinger Effect in (Anti-) de Sitter Space
- Review on stochastic approach to inflation
- Multifaceted Schwinger effect in de Sitter space
- Point splitting renormalization of Schwinger induced current in de Sitter spacetime
- Schwinger Effect in Inflaton-Driven Electric Field
- Massive scalar field evolution in de Sitter
- Schwinger effect impacting primordial magnetogenesis
- Vacuum birefringence and the Schwinger effect in (3+1) de Sitter
- Physical renormalization condition for de Sitter QED
- Schwinger Mechanism During Inflation
- Schwinger Pair Production by Electric Field Coupled to Inflaton
- Renormalization of the inflationary perturbations revisited
- Spectator electric fields, de Sitter space-time and the Schwinger effect
- Kinetic approach to the Schwinger effect during inflation
- Effect of electromagnetic fields on the creation of scalar particles in a flat Robertson-Walker space-time
- Adiabatic regularization and Green's function of a scalar field in de Sitter space: Positive energy spectrum and no trace anomaly
- Comment on "Creation of spin 1/2 particles by an electric field in de Sitter space"
- A massless scalar field in Robertson-Walker spacetimes: Adiabatic regularization and Green's function
- Point-splitting regularization of the stress tensor of a coupling scalar field in de Sitter space
- Semiclassical fermion pair creation in de Sitter spacetime
- Induced energy-momentum tensor of Dirac field in 2D de Sitter QED
- Energy-momentum tensor and effective Lagrangian of scalar QED with a nonminimal coupling in 2D de Sitter spacetime