47 research outputs found
A Canonical Relativistic Approach to Quantize Electromagnetic Field in the Presence of Moving Magneto-Dielectric Media
A canonical relativistic formulation is introduced to quantize
electromagnetic field in the presence of a polarizable and magnetizable moving
medium. The medium is modeled by a continuum of four vectors in a
phenomenological way. The covariant wave equation for the vector potential and
the covariant constitutive equation of the medium are obtained as the Euler-
Lagrange equations using the Lagrangian of the total system. A tensor of the
third rank which couples the electromagnetic field with the medium is
introduced and the susceptibility tensor of the medium is obtained in terms of
the coupling tensor. Also the noise polarization tensor is calculated in terms
of the coupling tensor and the creation and annihilation operators of the four
vectors modeling the medium.Comment: 7 pages, no figur
Quantum Charged Non-Linear Nano-String and Quantum Vacuum
The classical and quantum dynamic of a nonlinear chareged vibrating string
and its interaction with quantum vacuum field is investigated. Some probability
amplitudes for transitions between vacuum field and quantum states of the
string are obtained. The effect of nonlinearity on some probability amplitudes
is investigated and finally the corect equation for string containing the
vacuum and radiation reaction field is obtained.Comment: 14 pages, no figures. Accepted for publication in IJT