Berry phase for oscillating neutrinos
We show the presence of a topological (Berry) phase in the time evolution of a mixed state. For the case of mixed neutrinos, the Berry phase is a function of the mixing angle only.
hep-th↗
arXiv subjects
Peter A. Henning
Publications and source records attributed to Peter A. Henning.
The exact formula for neutrino oscillations
We present the exact formula for neutrino oscillations. By resorting to recent results of Quantum Field Theory of fermion mixing, we work out the Green's function formalism for mixed neutrinos. The usual quantum mechanical Pontecorvo formula is recovered in the relativistic limit.
hep-th↗
Green's Functions for Neutrino Mixing
The Green's function formalism for neutrino mixing is presented and the exact oscillation formula is obtained. The usual Pontecorvo formula is recovered in the relativistic limit.
hep-ph↗
Quantum Transport Theory
The problem of thermalization of a quark -- gluon plasma is addressed in the framework of thermal field theory. Within a simple approximation, the full quantum relaxation problem is solved and compared to the Boltzmann solution. Memory effects and a slowdown of the relaxation process are the results, they can be partially described by using a generalized kinetic equation without quasi-particle approximation.
hep-ph↗
Thermo Field Dynamics for Quantum Fields with Continuous Mass Spectrum applied to Nuclear Physics
Transport coefficients are obtained by incorporating a gauge principle into thermo field dynamics of inhomogeneous systems. In contrast to previous derivations, neither imaginary time arguments nor perturbation theory in powers of a coupling constant are used in the calculation. Numerical values are calculated for the pion component in hot nuclear matter.
nucl-th↗