EQUIVALENT SECOND-ORDER GRAVITY THEORY WITH A NONANALYTIC LAGRANGIAN THAT BEHAVES AS A PERFECT FLUID HAVING CHARACTERISTIC DENSITY AND PRESSURE

DOI10.1142/S0217751X12500741zbMath1247.83154MaRDI QIDQ2919238

Priyadarshi Majumdar

Publication date: 2 October 2012

Published in: International Journal of Modern Physics A (Search for Journal in Brave)

zbMATH Keywords

modified theory of gravity

Mathematics Subject Classification ID

Einstein's equations (general structure, canonical formalism, Cauchy problems) (83C05) Macroscopic interaction of the gravitational field with matter (hydrodynamics, etc.) (83C55) Relativistic gravitational theories other than Einstein's, including asymmetric field theories (83D05)

Cites Work

• Where new gravitational physics comes from: M-theory?
• Cosmological constant -- the weight of the vacuum
• A new type of isotropic cosmological models without singularity
• The acceleration of the universe and the physics behind it
• Are<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>f</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>R</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>Dark Energy Models Cosmologically Viable?
• The effective gravitational Lagrangian and the energy-momentum tensor in the inflationary Universe
• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Cosmological Imprint of an Energy Component with General Equation of State
• Curvature-driven acceleration: a utopia or a reality?
• \(k\)-inflation
• An alternative to quintessence

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