Abstract
We discuss the problem of a mesoscopic LC circuit with a negative
inductance ruled by a time-dependent Hermitian Hamiltonian. Classically,
we find unusual expressions for the Faraday's law and for the inductance
of a solenoid. Quantum mechanically, we solve exactly the time-dependent
Schrodinger equation through the Lewis and Riesenfeld invariant operator
method and construct Gaussian wave packet solutions for this
time-dependent LC circuit. We also evaluate the expectation values of
the charge and the magnetic flux in these Gaussian states, their quantum
fluctuations and the corresponding uncertainty product.
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