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Landau Levels of Scalar QED in Time-Dependent Magnetic Fields

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arxiv 1305.2577 v2 pith:DLCXTWD2 submitted 2013-05-12 hep-th cond-mat.mes-hallquant-ph

classification hep-thcond-mat.mes-hallquant-ph
keywords changemagneticscalarfieldlandaulevelsquantumtime-dependent
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The Landau levels of scalar QED undergo continuous transitions under a homogeneous, time-dependent magnetic field. We analytically formulate the Klein-Gordon equation for a charged spinless scalar as a Cauchy initial value problem in the two-component first order formalism and then put forth a measure that classifies the quantum motions into the adiabatic change, the nonadiabatic change, and the sudden change. We find the exact quantum motion and calculate the pair-production rate when the magnetic field suddenly changes as a step function.

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