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.

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

References in corpus (3)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Transverse Fierz-Pauli symmetry
• Non-Local Modification of Gravity and the Cosmological Constant Problem

Cited by in corpus (19)

• The Renormalization Group flow of unimodular f(R) gravity
• Unimodular $f(R,T)$ Gravity
• Can quantum fluctuations differentiate between standard and 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
• Nonconservative unimodular gravity: a viable cosmological scenario
• 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
• Schwarzschild Solution from WTDiff Gravity
• A comment on the matter-graviton coupling
• Extension of unimodular gravity and the cosmological constant
• Cosmology in Weyl Transverse Gravity
• Unimodular Theory of Gravity in Light of the Latest Cosmological Data
• Multifield theories invariant under transverse diffeomorphisms: The mixed regime case
• Diffeomorphism Invariance Breaking in Gravity and Cosmological Evolution
• Unimodular Cosmological models