Quantum field representation of photon-molecule interactions

Time invariance violation in photon-atom and photon-molecule interactions.

Time invariance violation in photon-atom and photon-molecule interactions. Abstract A direct experimental proof of strong T-invariance violation in interactions of the photons with atoms and molecules exists in the molecular physics. PACS number: 42.50.-p " Even for the physicist [a] description in plain language will be a criterion of the degree of understanding that has been reached ". The se...

Photon-neutrino interactions in strong magnetic field

The two-photon two-neutrino interaction induced by magnetic field is investigated. In particular the processes γγ → νν̄ and γ → γνν̄ are studied in the presence of strong magnetic field. An effective Lagrangian and partial amplitudes of the processes are presented. Neutrino emissivities due to the reactions γγ → νν̄ and γ → γνν̄ are calculated taking into account of the photon dispersion and large ...

Quantum EM Field and Photon Propagator

Quantum-field-theoretical techniques for stochastic representation of quantum problems

We describe quantum-field-theoretical (QFT) techniques for mapping quantum problems onto c-number stochastic problems. This approach yields results which are identical to phase-space techniques [C.W. Gardiner, Quantum Noise (1991)] when the latter result in a Fokker-Planck equation for a corresponding pseudo-probability distribution. If phase-space techniques do not result in a Fokker-Planck eq...

Probability Representation in Quantum Field Theory

The recently proposed probability representation of quantum mechanics is generalized to quantum field theory. We introduce a probability distribution functional for field configurations and find an evolution equation for such a distribution. The connection to the time-dependent generating functional of Green's functions is elucidated and the classical limit is discussed. The use of statistical ...