Fermion production in time-dependent fields
نویسنده
چکیده
Institut für Theoretische Physik, J.W. Goethe-Universität, 60054 Frankfurt am Main, Germany and Institut de Recherches Subatomiques, 23 rue du Loess BP 28, 67037 Strasbourg Cedex, France (Dated: October 27, 2003) Abstract The exact fermion propagator in a classical time-dependent gauge field is derived by solving the equation of motion for the Dirac Green’s functions. From the retarded propagator obtained in this way the momentum spectrum for the produced fermion pairs is calculated. Different approximations and the exact solution for the propagator and the momentum spectrum are presented.
منابع مشابه
Fermion pair production in time-dependent fields
Particle production in classical bosonic fields is a topic of continuing interest in QED and QCD. In strong fields processes with multiple couplings to the classical field are not parametrically suppressed by powers of the coupling constant g. In the absence of an additional scale, they have to be taken into account to all orders. In the following let us consider fermion production based on the...
متن کاملThe Quantum Statistical Mechanical Theory of Transport Processes
A new derivation of the quantum Boltzmann transport equation for the Fermion system from the quantum time evolution equation for the wigner distribution function is presented. The method exhibits the origin of the time - irreversibility of the Boltzmann equation. In the present work, the spin dependent and indistinguishibility of particles are also considered.
متن کاملReal-time nonequilibrium dynamics in hot QED plasmas: dynamical renormalization group approach
We study the real-time nonequilibrium dynamics in hot QED plasmas implementing a dynamical renormalization group and using the hard thermal loop (HTL) approximation. The focus is on the study of the relaxation of gauge and fermionic mean fields and on the quantum kinetics of the photon and fermion distribution functions. For semihard photons of momentum eT ≪ k ≪ T we find to leading order in th...
متن کاملFermion production in the background of Minkowski space classical solutions in spontaneously broken gauge theory.
We investigate fermion production in the background of Minkowski space solutions to the equations of motion of SU(2) gauge theory spontaneously broken via the Higgs mechanism. First, we attempt to evaluate the topological charge Q of the solutions. We find that for solutions Q is not well-defined as an integral over all space-time. Solutions can profitably be characterized by the (integer-value...
متن کاملAn economic production model for deteriorating items and time dependent demand with rework and multiple production setups
Recently, much emphasis has given to study the control and maintenance of production inventories of the deteriorating items. Rework is one of the main issues in reverse logistic and green supply chain, since it can reduce production cost and the environmental problem. Many researchers have focused on developing rework model, but few of them have developed model for deteriorating items. Due to t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005