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α-states in de Sitter space

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dc.contributorVirginia Techen
dc.contributor.authorde Boer, J.en
dc.contributor.authorJejjala, V.en
dc.contributor.authorMinic, Djordjeen
dc.contributor.departmentInstitute for Particle, Nuclear and Astronomical Sciences (IPNAS)en
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-16en
dc.date.accessioned2013-12-18T19:46:39Zen
dc.date.available2013-12-18T19:46:39Zen
dc.date.issued2005-02en
dc.description.abstractField theory in de Sitter space admits a one-parameter family of vacua determined by a superselection parameter alpha. Of these vacua, the Euclidean vacuum uniquely extrapolates to the vacuum of flat Minkowski space. States which resemble the alpha-vacua can be constructed as excitations above the Euclidean vacuum. Such states have modes alpha(k) which decay faster that k((1-d)/2). Fields in such states exhibit nonlocal correlations when examined from the perspective of fields in the Euclidean vacuum. The dynamics of such entangled states are fully consistent. If an alpha-state with properties that interpolate between an alpha-vacuum and the Euclidean vacuum were the initial condition for inflation, a signature for this may be found in a momentum dependent correction to the inflationary power spectrum. The functional formalism, which provides the tool for examining physics in an alpha-state, extends to fields of other spin. In particular, the extension to spin-2 may proffer a new class of infrared modifications to gravitational interactions. The implications of superselection sectors for the landscape of string vacua are briefly discussed.en
dc.identifier.citationde Boer, J ; Jejjala, V ; Minic, D, FEB 2005. “α-states in de Sitter space,” PHYSICAL REVIEW D 71(4): 044013. DOI: 10.1103/PhysRevD.71.044013en
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.71.044013en
dc.identifier.issn0556-2821en
dc.identifier.urihttp://hdl.handle.net/10919/24743en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevD.71.044013en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectquantum-field-theoryen
dc.subjectlinear dissipative systemen
dc.subjectprobe wmapen
dc.subjectobservationsen
dc.subjectcosmological constanten
dc.subjectparticle creationen
dc.subjectdesitteren
dc.subjectuniverseen
dc.subject2-point functionsen
dc.subjectmachs principleen
dc.subjectcp conservationen
dc.subjectvacuumen
dc.subjectAstronomy & Astrophysicsen
dc.subjectPhysicsen
dc.titleα-states in de Sitter spaceen
dc.title.serialPhysical Review Den
dc.typeArticle - Refereeden

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