Local Equilibrium States in Quantum Field Theory in Curved Spacetime

Solveen, Christoph

dc.contributor.advisor	Buchholz, Detlev Prof. Dr.	de
dc.contributor.author	Solveen, Christoph	de
dc.date.accessioned	2012-04-26T15:58:02Z	de
dc.date.accessioned	2013-01-18T13:44:00Z	de
dc.date.available	2013-01-30T23:51:15Z	de
dc.date.issued	2012-04-26	de
dc.identifier.uri	http://hdl.handle.net/11858/00-1735-0000-000D-F081-9	de
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-2969
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-2969
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-2969
dc.format.mimetype	application/pdf	de
dc.language.iso	ger	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/	de
dc.title	Local Equilibrium States in Quantum Field Theory in Curved Spacetime	de
dc.type	doctoralThesis	de
dc.title.translated	Lokale Gleichgewichtszustände in der Quantenfeldtheorie auf gekrümmter Raumzeit	de
dc.contributor.referee	Rehren, Karl-Henning Prof. Dr.	de
dc.date.examination	2012-04-11	de
dc.subject.dnb	530 Physik	de
dc.subject.gok	RDI 500	de
dc.subject.gok	RDI 640	de
dc.subject.gok	RJG 200	de
dc.description.abstracteng	The present work concerns itself with the conceptual problem of assigning thermal parameters to states in quantum field theory in curved spacetime, and is based on the concept of local thermal equilibrium in the sense of Buchholz, Ojima and Roos. In this approach, point-like localized quantum fields, so called thermal observables, are used to attach thermal parameters to macroscopic systems, with the proviso that these systems do not deviate too far from thermal equilibrium. In contrast to many of the existing approaches, this allows for a conceptually clear description of non-equilibrium phenomena, for example in cosmology. The results are illustrated using the massless, conformally coupled, free scalar field. Initially, the structure of the set of thermal observables is discussed and it is found that in curved spacetime these objects do not form a vector space and must be chosen as linearly independent. However, there can be relations between the corresponding local thermal parameters which are induced by linear equations of state. It is shown that these relations lead to evolution equations for the local thermal parameters in curved spacetime. For thermal observables where no such linear relations hold, there exist states to which the corresponding local thermal parameters can be assigned in bounded regions in Minkowski spacetime. Using a natural assumption regarding the spectrum of the thermal observables, it is shown that states exist which are in equilibrium at any given point in a curved spacetime. Following on, it is argued that KMS states in stationary curved spacetimes may not be viewed in analogy to global thermal equilibrium states in Minkowski spacetime. The KMS parameter	de
dc.contributor.coReferee	Buchholz, Detlev Prof. Dr.	de
dc.subject.topic	Physics	de
dc.subject.ger	lokales thermisches Gleichgewicht	de
dc.subject.ger	Quantenfeldtheorie auf gekrümmten Raumzeiten	de
dc.subject.eng	local thermal equilibrium	de
dc.subject.eng	Quantum Field Theory in Curved Spacetime	de
dc.subject.bk	33.24	de
dc.subject.bk	33.21	de
dc.subject.bk	33.28	de
dc.identifier.urn	urn:nbn:de:gbv:7-webdoc-3482-6	de
dc.identifier.purl	webdoc-3482	de
dc.affiliation.institute	Fakultät für Physik	de
dc.identifier.ppn	726655473	de

Dateien

Name:solveen.pdf

Größe:718.7Kb

Format:PDF

Öffnen

Name:: solveen.pdf
Größe:: 718.7Kb
Format:: PDF

Öffnen

Das Dokument erscheint in:

Fakultät für Physik (inkl. GAUSS) [925]

Zur Kurzanzeige