FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2159178838> ?p ?o ?g. }

• W2159178838 abstract "In quantum field theory in curved spacetimes the construction of the algebra of observables of linear fields is today well understood. However, it remains a non-trivial task to construct physically meaningful states on the algebra. For instance, we are in the unsatisfactory situation that there exist no examples of states suited to describe local thermal equilibrium in a non-stationary spacetime. In this thesis, we construct a class of states for the Klein-Gordon field in Robertson-Walker spacetimes, which seem to provide the first example of thermal states in a spacetime without time translation symmetry. More precisely, in the setting of real, linear, scalar fields in Robertson-Walker spacetimes we define on the set of homogeneous, isotropic, quasi-free states a free energy functional that is based on the averaged energy density measured by an isotropic observer along his worldline. This functional is well defined and lower bounded by a suitable quantum energy inequality. Subsequently, we minimize this functional and obtain states that we interpret as 'almost equilibrium states'. It turns out that the states of low energy, which were recently introduced by Olbermann, are the ground states of the almost equilibrium states. Finally, we prove that the almost equilibrium states satisfy the Hadamard condition, which qualifies them as physically meaningful states." @default.
• W2159178838 created "2016-06-24" @default.
• W2159178838 creator A5051467777 @default.
• W2159178838 date "2009-01-11" @default.
• W2159178838 modified "2023-09-27" @default.
• W2159178838 title "A Class of Almost Equilibrium States in Robertson-Walker Spacetimes" @default.
• W2159178838 cites W1527336091 @default.
• W2159178838 cites W1590753149 @default.
• W2159178838 cites W1606975474 @default.
• W2159178838 cites W1669598283 @default.
• W2159178838 cites W1673947534 @default.
• W2159178838 cites W1963935759 @default.
• W2159178838 cites W1965004941 @default.
• W2159178838 cites W1966578836 @default.
• W2159178838 cites W1968860368 @default.
• W2159178838 cites W1974678171 @default.
• W2159178838 cites W1975718627 @default.
• W2159178838 cites W1977376103 @default.
• W2159178838 cites W1981729129 @default.
• W2159178838 cites W1991787071 @default.
• W2159178838 cites W1993993424 @default.
• W2159178838 cites W1994275197 @default.
• W2159178838 cites W1996026087 @default.
• W2159178838 cites W1996747802 @default.
• W2159178838 cites W1997575046 @default.
• W2159178838 cites W1998203125 @default.
• W2159178838 cites W2000418123 @default.
• W2159178838 cites W2003470918 @default.
• W2159178838 cites W2004477750 @default.
• W2159178838 cites W2011736450 @default.
• W2159178838 cites W2012706763 @default.
• W2159178838 cites W2015397846 @default.
• W2159178838 cites W2018484716 @default.
• W2159178838 cites W2022209364 @default.
• W2159178838 cites W2023781804 @default.
• W2159178838 cites W2024227009 @default.
• W2159178838 cites W2027200613 @default.
• W2159178838 cites W2029403139 @default.
• W2159178838 cites W2038962717 @default.
• W2159178838 cites W2040398117 @default.
• W2159178838 cites W2040857442 @default.
• W2159178838 cites W2043530075 @default.
• W2159178838 cites W2044516693 @default.
• W2159178838 cites W2051837263 @default.
• W2159178838 cites W2052045615 @default.
• W2159178838 cites W2055281720 @default.
• W2159178838 cites W2055869344 @default.
• W2159178838 cites W2059799037 @default.
• W2159178838 cites W2065094431 @default.
• W2159178838 cites W2070900651 @default.
• W2159178838 cites W2076259017 @default.
• W2159178838 cites W2078120509 @default.
• W2159178838 cites W2080601401 @default.
• W2159178838 cites W2085486207 @default.
• W2159178838 cites W2087566095 @default.
• W2159178838 cites W2088291070 @default.
• W2159178838 cites W2088529531 @default.
• W2159178838 cites W2093306411 @default.
• W2159178838 cites W2098001159 @default.
• W2159178838 cites W2105973581 @default.
• W2159178838 cites W2107293321 @default.
• W2159178838 cites W2110087667 @default.
• W2159178838 cites W2123530893 @default.
• W2159178838 cites W2123782066 @default.
• W2159178838 cites W2124386491 @default.
• W2159178838 cites W2131857963 @default.
• W2159178838 cites W2150514333 @default.
• W2159178838 cites W2176395030 @default.
• W2159178838 cites W2237606703 @default.
• W2159178838 cites W2273409667 @default.
• W2159178838 cites W2537069027 @default.
• W2159178838 cites W2962703731 @default.
• W2159178838 cites W3022560009 @default.
• W2159178838 cites W3022776308 @default.
• W2159178838 cites W3039012497 @default.
• W2159178838 cites W3133809144 @default.
• W2159178838 cites W3140714191 @default.
• W2159178838 cites W596555968 @default.
• W2159178838 cites W628475915 @default.
• W2159178838 cites W628774535 @default.
• W2159178838 cites W1966368679 @default.
• W2159178838 doi "https://doi.org/10.3204/desy-thesis-2008-020" @default.
• W2159178838 hasPublicationYear "2009" @default.
• W2159178838 type Work @default.
• W2159178838 sameAs 2159178838 @default.
• W2159178838 citedByCount "8" @default.
• W2159178838 countsByYear W21591788382012 @default.
• W2159178838 countsByYear W21591788382013 @default.
• W2159178838 countsByYear W21591788382018 @default.
• W2159178838 countsByYear W21591788382019 @default.
• W2159178838 crossrefType "posted-content" @default.
• W2159178838 hasAuthorship W2159178838A5051467777 @default.
• W2159178838 hasConcept C110521144 @default.
• W2159178838 hasConcept C121332964 @default.
• W2159178838 hasConcept C130187892 @default.
• W2159178838 hasConcept C134306372 @default.
• W2159178838 hasConcept C29310469 @default.
• W2159178838 hasConcept C32848918 @default.
• W2159178838 hasConcept C33332235 @default.
• W2159178838 hasConcept C33923547 @default.

• next