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Microlocal Analysis of Quantum Fields on Curved Spacetimes
ESI Lectures in Mathematics and Physics

Christian Gérard (Université de Paris 11, Orsay, France)

Microlocal Analysis of Quantum Fields on Curved Spacetimes

ISBN print 978-3-03719-094-4, ISBN online 978-3-03719-594-9
DOI 10.4171/094
November 2019, 228 pages, softcover, 17 x 24 cm.
48.00 Euro

We focus on free fields and the corresponding quasi-free states and more precisely on Klein–Gordon fields and Dirac fields. The first chapters are devoted to preliminary material on CCR*-algebras, quasi-free states, wave equations on Lorentzian manifolds, microlocal analysis and to the important Hadamard condition, characterizing physically acceptable quantum states on curved spacetimes. In the later chapters more advanced tools of microlocal analysis, like the global pseudo-differential calculus on non-compact manifolds, are used to construct and study Hadamard states for Klein–Gordon fields by various methods, in particular by scattering theory and by Wick rotation arguments. In the last chapter the fermionic theory of free Dirac quantum fields on Lorentzian manifolds is described in some detail.

This monograph is addressed to both mathematicians and mathematical physicists. The first will be able to use it as a rigorous exposition of free quantum fields on curved spacetimes and as an introduction to some interesting and physically important problems arising in this domain. The second may find this text a useful introduction and motivation to the use of more advanced tools of microlocal analysis in this area of research.

Keywords: Quantum Field Theory, curved spacetimes, Hadamard states, microlocal analysis, pseudo-differential calculus

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