About non standard Lagrangians in cosmology

Journal Article · Fri Aug 17 00:00:00 EDT 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4748066· OSTI ID:22069184

Dimitrijevic, Dragoljub D; Milosevic, Milan ^[1]

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1. Department of Physics, Faculty of Science and Mathematics, University of Nis, Visegradska 33, P.O. Box 224, 18000 Nis (Serbia)

A review of non standard Lagrangians present in modern cosmological models will be considered. Well known example of non standard Lagrangian is Dirac-Born-Infeld (DBI) type Lagrangian for tachyon field. Another type of non standard Lagrangian under consideration contains scalar field which describes open p-adic string tachyon and is called p-adic string theory Lagrangian. We will investigate homogenous cases of both DBI and p-adic fields and obtain Lagrangians of the standard type which have the same equations of motions as aforementioned non standard one.

• OSTI ID: 22069184
• Journal Information: AIP Conference Proceedings, Vol. 1472, Issue 1; Conference: TIM-11: Physics conference, Timisoara (Romania), 24-27 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BORN-INFELD THEORY
COSMOLOGICAL MODELS
COSMOLOGY
DIRAC EQUATION
EQUATIONS OF MOTION
LAGRANGIAN FIELD THEORY
LAGRANGIAN FUNCTION
SCALAR FIELDS
STRING MODELS
STRING THEORY
TACHYONS