Unimodular cosmology and the weight of energy

Abstract

Some models are presented in which the strength of the gravitational coupling of the potential energy relative to the same coupling for the kinetic energy is, in a precise sense, adjustable. The gauge symmetry of these models consists of those coordinate changes with unit jacobian.

arXiv commentLaTeX, 23 pages, conclusions expanded. Two paragraphs and a new reference added

References in corpus (9)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Casimir Effect and the Quantum Vacuum
• Transverse Fierz-Pauli symmetry
• Non-Local Modification of Gravity and the Cosmological Constant Problem
• Can one tell Einstein's unimodular theory from Einstein's general relativity?
• Kinetic Energy and the Equivalence Principle
• Are the String and Einstein Frames Equivalent

Cited by in corpus (41)

• The Renormalization Group flow of unimodular f(R) gravity
• The Trace-Free Einstein Equations and inflation
• Scale-invariant alternatives to general relativity
• Unimodular $f(R,T)$ Gravity
• Cosmological Implications of Unimodular Gravity
• Unimodular gravity with external sources
• Can quantum fluctuations differentiate between standard and unimodular gravity?
• Testing Unimodular Gravity
• Hamiltonian formulation of unimodular gravity in the teleparallel geometry
• Weyl transverse gravity (WTDiff) and the cosmological constant
• Aspects of Infrared Modifications of Gravity
• Fake Conformal Symmetry in Unimodular Gravity
• Transverse gravity versus observations
• Classical Weyl Transverse Gravity
• TDiff and Weyl Invariant Massive Spin-2: Linear Theory
• TransverseDiff gravity is to scalar-tensor as unimodular gravity is to General Relativity
• Nonconservative unimodular gravity: a viable cosmological scenario
• Analyzing modified unimodular gravity via Lagrange multipliers
• No Conformal Anomaly in Unimodular Gravity
• First Order formulation of Unimodular Gravity
• Nonconservative traceless type gravity
• The weight of matter
• Topological Induced Gravity
• What do gravitons say about (unimodular) gravity?
• Reissner Nordstrom Metric in Unimodular Theory of Gravity
• Unimodular conformal and projective relativity
• Reissner-Nordstrom Solution from Weyl Transverse Gravity
• TDiff invariant gauge fields in cosmology
• Emergent gravity from the IIB matrix model and cancellation of a cosmological constant
• Multi-field TDiff theories for cosmology
• A comment on the matter-graviton coupling
• Extension of unimodular gravity and the cosmological constant
• Schwarzschild Solution from WTDiff Gravity
• Cosmology in Weyl Transverse Gravity
• Emergent gravity from off-shell energy fixing
• Multifield theories invariant under transverse diffeomorphisms: The mixed regime case
• Unimodular Theory of Gravity in Light of the Latest Cosmological Data
• Density-metric unimodular gravity: vacuum maximal symmetry
• Diffeomorphism Invariance Breaking in Gravity and Cosmological Evolution
• Unimodular Cosmological models
• Unimodular Cosmological Space-times