Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  (Broken) Gauge Symmetries and Constraints in Regge Calculus

Bahr, B., & Dittrich, B. (2009). (Broken) Gauge Symmetries and Constraints in Regge Calculus. Classical and quantum gravity, 26: 225011. doi:10.1088/0264-9381/26/22/225011.

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
0905.1670v1.pdf (Preprint), 368KB
Name:
0905.1670v1.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
eDoc_access: PUBLIC
Lizenz:
-
:
CQG_26_22_225011.pdf (beliebiger Volltext), 587KB
Datei-Permalink:
-
Name:
CQG_26_22_225011.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Bahr, Benjamin1, Autor           
Dittrich, Bianca1, Autor           
Affiliations:
1Canonical and Covariant Dynamics of Quantum Gravity, AEI Golm, MPI for Gravitational Physics, Max Planck Society, ou_102878              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: We will examine the issue of diffeomorphism symmetry in simplicial models of (quantum) gravity, in particular for Regge calculus. We find that for a solution with curvature there do not exist exact gauge symmetries on the discrete level. Furthermore we derive a canonical formulation that exactly matches the dynamics and hence symmetries of the covariant picture. In this canonical formulation broken symmetries lead to the replacements of constraints by so--called pseudo constraints. These considerations should be taken into account in attempts to connect spin foam models, based on the Regge action, with canonical loop quantum gravity, which aims at implementing proper constraints. We will argue that the long standing problem of finding a consistent constraint algebra for discretized gravity theories is equivalent to the problem of finding an action with exact diffeomorphism symmetries. Finally we will analyze different limits in which the pseudo constraints might turn into proper constraints. This could be helpful to infer alternative discretization schemes in which the symmetries are not broken.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2009
 Publikationsstatus: Erschienen
 Seiten: 34
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1088/0264-9381/26/22/225011
Anderer: arXiv:0905.1670
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Classical and quantum gravity
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Bristol, U.K. : Institute of Physics
Seiten: - Band / Heft: 26 Artikelnummer: 225011 Start- / Endseite: - Identifikator: Anderer: 954925513480
Anderer: 0264-9381