Format:
1 Online-Ressource (X, 109 Seiten)
,
10 Illustrationen
Edition:
Springer eBook Collection. Physics and Astronomy
ISBN:
9783030116897
Series Statement:
SpringerBriefs in Physics
Content:
Field theory, relying on the concept of continuous space and time while confronted with the quantum physical nature of observable quantities, still has some fundamental challenges to face. One such challenge is to understand the emergence of complexity in the behavior of interacting elementary fields, including among other things nontrivial phase structures of elementary matter at high energy density or an atypical emergence of statistical properties, e.g., when an apparent temperature is proportional to a constant acceleration in a homogeneous gravitational field. Most modern textbooks on thermal field theory are mainly concerned with how the field theory formalism should be used if a finite temperature is given. In contrast, this short primer explores how the phenomenon of temperature emerges physically for elementary fields - inquiring about the underlying kinetic field theory and the way energy fluctuations and other noise should be handled - and it investigates whether and how this harmonizes with traditional field theory concepts like spectral evolution, the Keldysh formalism, and phase transitions
Content:
Preface -- Off-shell and on-shell transport -- Uncertainty, Wigner function and Unruh temperature -- Feynman-Vernon path integral -- Keldysh (two-time) formalism -- Noise from renormalization? -- Distribution of local energy packets -- Melting of spectra
Additional Edition:
ISBN 9783030116880
Additional Edition:
ISBN 9783030116903
Additional Edition:
Erscheint auch als Druck-Ausgabe ISBN 978-3-030-11688-0
Additional Edition:
Printed edition ISBN 9783030116880
Additional Edition:
Printed edition ISBN 9783030116903
Language:
English
DOI:
10.1007/978-3-030-11689-7
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