Basics of Thermal Field Theory - Laine, Mikko;Vuorinen, Aleksi
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This book presents thermal field theory techniques, which can be applied in both cosmology and the theoretical description of the QCD plasma generated in heavy-ion collision experiments. It focuses on gauge interactions (whether weak or strong), which are essential in both contexts. As well as the many differences in the physics questions posed and in the microscopic forces playing a central role, the authors also explain the similarities and the techniques, such as the resummations, that are needed for developing a formally consistent perturbative expansion. The formalism is developed step by…mehr

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Produktbeschreibung
This book presents thermal field theory techniques, which can be applied in both cosmology and the theoretical description of the QCD plasma generated in heavy-ion collision experiments. It focuses on gauge interactions (whether weak or strong), which are essential in both contexts. As well as the many differences in the physics questions posed and in the microscopic forces playing a central role, the authors also explain the similarities and the techniques, such as the resummations, that are needed for developing a formally consistent perturbative expansion. The formalism is developed step by step, starting from quantum mechanics; introducing scalar, fermionic and gauge fields; describing the issues of infrared divergences; resummations and effective field theories; and incorporating systems with finite chemical potentials. With this machinery in place, the important class of real-time (dynamic) observables is treated in some detail. This is followed by an overview of a numberof applications, ranging from the study of phase transitions and particle production rate computations, to the concept of transport and damping coefficients that play a ubiquitous role in current developments.

The book serves as a self-contained textbook on relativistic thermal field theory for undergraduate and graduate students of theoretical high-energy physics.

Autorenporträt
After obtaining a PhD in theoretical physics from the University of Helsinki, in 1994, Mikko Laine held postdoctoral positions at the University of Heidelberg, 1995 - 1997, and at the Theory Division at CERN, 1997 - 2003. For 2003 - 2012 he was a professor of theoretical physics at the University of Bielefeld; since 2012 he is a professor of theoretical physics at the University of Bern. Aleksi Vuorinen obtained his PhD in theoretical physics from the University of Helsinki in 2004, and thereafter worked as a postdoctoral researcher at the University of Washington, 2004-2007, the Technical University of Vienna, 2007, as well as the Theory Division of CERN, 2008-2009. From 2009 to 2013, he headed a Sofja Kovalevskaja research group at the University of Bielefeld, after which he returned to Helsinki, where he currently works as a research group leader at the Helsinki Institute of Physics.
Rezensionen
"It gives a very good introduction to perturbative finite-temperature quantum field theory. In particular, the derivations are very detailed, explaining carefully potential pitfalls other texts may just glance over. As such the book is also suitable for self-studies for researchers interested in thermal quantum field theory. ... In summary, this book closes a gap between standard master-level university courses on (non-thermal) quantum field theory and current research in perturbative finite-temperature quantum field theory." (Stefan Weinzierl, zbMATH 1356.81007, 2017)