KIT | KIT-Bibliothek | Impressum | Datenschutz

Extension of unimodular gravity and the cosmological constant

Klinkhamer, F. R. 1
1 Institut für Theoretische Physik (ITP), Karlsruher Institut für Technologie (KIT)

Abstract:

A new way is proposed to cancel the cosmological constant. The proposal involves the metric determinant acting as a type of self-adjusting $q$-field without need of a fine-tuned chemical potential. Since the determinant of the metric now plays a role in the physics, the allowed coordinate transformations are restricted to those with unit Jacobian. This approach to the cosmological constant problem is, therefore, similar to the unimodular-gravity approach of the previous literature. The resulting cosmology has been studied and the obtained results show the natural cancellation of an initial cosmological constant if quantum-dissipative effects are included.


Verlagsausgabe §
DOI: 10.5445/IR/1000154020
Veröffentlicht am 04.01.2023
Originalveröffentlichung
DOI: 10.1103/PhysRevD.106.124015
Scopus
Zitationen: 3
Web of Science
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2022
Sprache Englisch
Identifikator ISSN: 2470-0010, 0556-2821, 1089-4918, 1538-4500, 1550-2368, 1550-7998, 2470-0029
KITopen-ID: 1000154020
Erschienen in Physical Review D
Verlag American Physical Society (APS)
Band 106
Heft 12
Seiten Art.-Nr.: 124015
Vorab online veröffentlicht am 09.12.2022
Nachgewiesen in Scopus
Web of Science
Dimensions
Relationen in KITopen
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page