Schwinger effect with backreaction in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> <mml:mn>1</mml:mn> <mml:mi mathvariant="normal">D</mml:mi> </mml:mrow> </mml:math> massive QED with a strong external field | Physical Review D | DeepDyve