Quantum Einstein-Rosen waves: coherent states and n-point functions

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dc.contributor.author Barbero G., J. Fernando
dc.contributor.author Garay, Iñaki
dc.contributor.author Sánchez Villaseñor, Eduardo Jesús
dc.date.accessioned 2017-05-17T10:21:04Z
dc.date.available 2017-05-17T10:21:04Z
dc.date.issued 2008-09-30
dc.identifier.bibliographicCitation Classical and Quantum Gravity, 2008, 25 (20), 205013.
dc.identifier.issn 0264-9381
dc.identifier.uri http://hdl.handle.net/10016/24581
dc.description.abstract We discuss two different types of issues concerning the quantization of Einstein Rosen waves. First we study in detail the possibility of using the coherent states corresponding to the dynamics of the auxiliary, free Hamiltonian appearing in the description of the model to study the full dynamics of the system. For time periods of arbitrary length we show that this is only possible for states that are close, in a precise mathematical sense, to the vacuum. We do this by comparing the quantum evolutions defined by the auxiliary and physical Hamiltonians on the class of coherent states. In the second part of the paper we study the structure of n-point functions. As we will show their detailed behavior differs from that corresponding to standard perturbative quantum field theories. We take this as a manifestation of the fact that the correct approximation scheme for physically interesting objects in these models does not lead to a power series expansion in the relevant coupling constant but to a more complicated asymptotic behavior.
dc.description.sponsorship The authors want to thank Daniel Gómez Vergel for his comments and careful reading of the manuscript. IG acknowledges the financial support provided by the Spanish Ministry of Science and Education (MEC) under the FPU program. This work is also supported by the Spanish MEC under the research grant FIS2005-05736-C03-02.
dc.format.extent 20
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IOP Publishing
dc.rights © 2008 IOP Publishing Ltd
dc.title Quantum Einstein-Rosen waves: coherent states and n-point functions
dc.type article
dc.subject.eciencia Física
dc.subject.eciencia Matemáticas
dc.subject.eciencia Materiales
dc.identifier.doi https://dx.doi.org/10.1088/0264-9381/25/20/205013
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. FIS2005-05736-C03-02
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 205013-1
dc.identifier.publicationissue 20
dc.identifier.publicationlastpage 205013-20
dc.identifier.publicationtitle Classical and Quantum Gravity
dc.identifier.publicationvolume 25
dc.identifier.uxxi AR/0000004790
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