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Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics (Hardcover, 2014 ed.)
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Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics (Hardcover, 2014 ed.)
Series: Springer Theses
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Total price: R3,545
Discovery Miles: 35 450
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The author develops a new perturbative formalism of non-equilibrium
thermal quantum field theory for non-homogeneous backgrounds. As a
result of this formulation, the author is able to show how
so-called pinch singularities can be removed, without resorting to
ad hoc prescriptions, or effective resummations of absorptive
effects. Thus, the author arrives at a diagrammatic approach to
non-equilibrium field theory, built from modified Feynman rules
that are manifestly time-dependent from tree level. This new
formulation provides an alternative framework in which to derive
master time evolution equations for physically meaningful particle
number densities, which are valid to all orders in perturbation
theory and to all orders in gradient expansion. Once truncated in a
loop-wise sense, these evolution equations capture non-equilibrium
dynamics on all time-scales, systematically describing
energy-violating processes and the non-Markovian evolution of
memory effects
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