Gluon Pair Production from a Space-Time Dependent Classical Chromofield via Vacuum Polarization
نویسندگان
چکیده
We investigate the production of gluon pairs from a space-time dependent classical chromofield via vacuum polarization within the framework of the background field method of QCD. The investigation of the production of gluon pairs is important in the study of the evolution of the quark-gluon plasma in ultra-relativistic heavy-ion collisions at RHIC and LHC.
منابع مشابه
Leading-Order Gluon-Pair Production from a Space-Time Dependent Chromofield
We describe gluon-pair production from a space-time dependent chromofield via vacuum polarization within the framework of the background field method of QCD. The processes we consider are first order in the action. We derive the corresponding source terms for gluon pair production for situations that can be described by a 1+1 dimensional approach. Especially, we observe that within the range of...
متن کاملGluon Pair Production From Space-Time dependent Chromofield
We study the production of gluon pairs from the QCD vacuum in the presence of a space-time dependent external chromofield by using background field method. This pair production is computed to the lowest order in coupling consatnt αs. It is shown that the gluon pair prodcution is much higher than the qq̄ pair production from the space-time dependent chromofield. Parton productions from this backg...
متن کاملPhase Space Description of the Quark and Gluon Production from a Space-Time Dependent Chromofield
We derive source terms for the production of quarks and gluons from the QCD vacuum in the presence of a space-time dependent external chromofield Acl. We found that the source terms for the parton production processes Acl → qq̄, gg also include the annihilation processes qq̄, gg → Acl. These source terms for the parton production from the space-time dependent chromofield are necessary to study th...
متن کاملPhase Space Description of the Leading Order Quark and Gluon Production from a Space-Time Dependent Chromofield
We derive source terms for the production of quarks and gluons from the QCD vacuum in the presence of a space-time dependent external chromofield Acl to the order of S (1). We found that the source terms for the parton production processes Acl → qq̄ and Acl, AclAcl → gg also include the annihilation processes qq̄ → Acl and gg → Acl, AclAcl. The source terms we derive are applicable for the descri...
متن کاملFinite lifetime effects on the photon production from a quark-gluon plasma
We use the real-time Keldysh formalism to investigate finite lifetime effects on the photon emission from a quark-gluon plasma (QGP). We provide an ansatz which eliminates the divergent contribution from the vacuum polarization and renders the photon spectrum UV-finite if the time evolution of the QGP is described in a suitable manner. The quark-gluon plasma (QGP) created during heavy-ion colli...
متن کامل