Softly Massive Gravity
arXiv:hep-th/0312289 · doi:10.1103/PhysRevD.69.124032
Abstract
Large-distance modification of gravity may be the mechanism for solving the cosmological constant problem. A simple model of the large-distance modification -- four-dimensional (4D) gravity with the hard mass term-- is problematic from the theoretical standpoint. Here we discuss a different model, the brane-induced gravity, that effectively introduces a soft graviton mass. We study the issues of unitarity, analyticity and causality in this model in more than five dimensions. We show that a consistent prescription for the poles of the Green's function can be specified so that 4D unitarity is preserved. However, in certain instances 4D analyticity cannot be maintained when theory becomes higher dimensional. As a result, one has to sacrifice 4D causality at distances of the order of the present-day Hubble scale. This is a welcome feature for solving the cosmological constant problem, as was recently argued in the literature. We also show that, unlike the 4D massive gravity, the model has no strong-coupling problem at intermediate scales.
33 LaTex pages
References in corpus (57)
- 4D Gravity on a Brane in 5D Minkowski Space
- Is Cosmic Speed-Up Due to New Gravitational Physics?
- Accelerated Universe from Gravity Leaking to Extra Dimensions
- Cosmology on a Brane in Minkowski Bulk
- Effective Field Theory for Massive Gravitons and Gravity in Theory Space
- Strong Interactions and Stability in the DGP Model
- Nonperturbative Continuity in Graviton Mass versus Perturbative Discontinuity
- Gravity on a Brane in Infinite-Volume Extra Space
- Metastable Gravitons and Infinite Volume Extra Dimensions
- Opening up extra dimensions at ultra-large scales
- The Accelerated Universe and the Moon
- Diluting Cosmological Constant In Infinite Volume Extra Dimensions
- Differentiating between Modified Gravity and Dark Energy
- Gravitational Leakage into Extra Dimensions: Probing Dark Energy Using Local Gravity
- Supernovae, CMB, and Gravitational Leakage into Extra Dimensions
- The Power of Brane-Induced Gravity
- Scales of Gravity
- Non-Local Modification of Gravity and the Cosmological Constant Problem
- The m->0 limit for massive graviton in dS_4 and AdS_4. How to circumvent the van Dam-Veltman-Zakharov discontinuity
- No Van Dam-Veltman-Zakharov Discontinuity in Ads Space
- Effective Gravitational Equations on Brane World with Induced Gravity
- On the Graviton Mass
- Probing Sub-Micron Forces by Interferometry of Bose-Einstein Condensed Atoms
- Quasi-Localization of Gravity by Resonant Modes
- (Quasi)Localized Gauge Field on a Brane: Dissipating Cosmic Radiation to Extra Dimensions?
- Conformal Symmetry and Central Charges in 4 Dimensions
- Spherically symmetric spacetimes in massive gravity
- Brane worlds
- Black Hole Solutions in Braneworlds with Induced Gravity
- Non-compact Calabi--Yau Manifolds and Localized Gravity
- Fat Gravitons, the Cosmological Constant and Sub-millimeter Tests
- Brane-induced gravity in more than one extra dimensions: violation of equivalence principle and ghost
- Induced brane gravity: realizations and limitations
- Weak gravity in DGP braneworld model
- Regularization of Brane Induced Gravity
- Current Short-Range Tests of the Gravitational Inverse Square Law
- Graviton Mass or Cosmological Constant?
- Cosmic Strings in a Braneworld Theory with Metastable Gravitons
- A Comment on Brane Bending and Ghosts in Theories with Infinite Extra Dimensions
- General Brane Dynamics with R_{4} term in the Bulk
- Strong coupling in brane-induced gravity in five dimensions
- Towards an Effective Particle-String Resolution of the Cosmological Constant Problem
- Spherically Symmetric Braneworld Solutions with R_{4} term in the Bulk
- See-Saw Modification of Gravity
- Holographic RG and Cosmology in Theories with Quasi-Localized Gravity
- Multigravity from a discrete extra dimension
- Stealth Branes
- Braneworld Flattening by a Cosmological Constant
- Brane Effects on Extra Dimensional Scenarios: A Tale of Two Gravitons
- Massive Gravity on a Brane
- Global Structure of Deffayet (Dvali-Gabadadze-Porrati) Cosmologies
- Black Holes on the Brane with Induced Gravity
- Solutions of multigravity theories and discretized brane worlds
- Toward Solving the Cosmological Constant Problem?
- Gravity induced over a smooth soliton
- DGP Brane as a Gravity Conductor
- A Novel Approach to the Cosmological Constant Problem
Cited by in corpus (71)
- Modified Gravity and Cosmology
- Beyond the Cosmological Standard Model
- Massive Gravity
- Theoretical Aspects of Massive Gravity
- Brane-World Gravity
- Testing General Relativity in Cosmology
- Approaches to Understanding Cosmic Acceleration
- Dynamics of Linear Perturbations in f(R) Gravity
- Cosmological Tests of Gravity
- Galileon inflation
- DBI and the Galileon reunited
- Graviton Mass Bounds
- Cosmic Acceleration and the Helicity-0 Graviton
- Cosmology of the Galileon from Massive Gravity
- How a brane cosmological constant can trick us into thinking that w < -1
- Cascading DGP
- Modified-Source Gravity and Cosmological Structure Formation
- Constructing stabilized brane world models in five-dimensional Brans-Dicke theory
- Ghosts in the self-accelerating universe
- Cascading Gravity and Degravitation
- Ghosts, Strong Coupling and Accidental Symmetries in Massive Gravity
- Can we be tricked into thinking that w is less than -1?
- de Sitter Galileon
- Modified Gravity via Spontaneous Symmetry Breaking
- Charting the Landscape of Modified Gravity
- Supersymmetric Galileons
- Dynamics of Gravity in a Higgs Phase
- Massive gravity from Dirichlet boundary conditions
- Observational Evidence for Cosmological-Scale Extra Dimensions
- Schwarzschild solution in brane induced gravity
- Flat 3-Brane with Tension in Cascading Gravity
- Lorentz-violating massive gauge and gravitational fields
- Gravitational Shock Waves and Their Scattering in Brane-Induced Gravity
- Post-Einsteinian tests of linearized gravitation
- Gravity in the infrared and effective nonlocal models
- Strong Coupling vs. 4-D Locality in Induced Gravity
- Cascading Cosmology
- Cascading Gravity is Ghost Free
- Brane-Induced Gravity's Shocks
- Instabilities of Spherical Solutions with Multiple Galileons and SO(N) Symmetry
- Induced gravity on intersecting brane-worlds Part I: Maximally symmetric solutions
- Cargese Lectures on Brane Induced Gravity
- Induced gravity on intersecting brane-worlds Part II: Cosmology
- Short distance non-perturbative effects of large distance modified gravity
- Enhanced Peculiar Velocities in Brane-Induced Gravity
- Non Pauli-Fierz Massive Gravitons
- On covariant long-distance modifications of Einstein theory and strong coupling problem
- An Introduction to Cascading Gravity and Degravitation
- Weakly-coupled metastable graviton
- Brane Induced Gravity, its Ghost and the Cosmological Constant Problem
- The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry
- Cosmic Acceleration and Modified Gravity
- Gravitational resonances on -brane
- Special Massive Spin-2 on de Sitter Space
- General Massive Spin-2 on de Sitter Background
- Screening bulk curvature in the presence of large brane tension
- Massive gravity as a quantum gauge theory
- Mass Screening in Modified Gravity
- Brane gravity, massless bulk scalar and self-tuning of the cosmological constant
- Metastable gravity on classical defects
- Long range gravity tests and the Pioneer anomaly
- Correspondence principle for a brane in Minkowski space and vector mesons
- Massive Gravity in Ads and Minkowski Backgrounds
- Leakage of gravitational waves into an extra dimension in the DGP model
- UV caps, IR modification of gravity, and recovery of 4D gravity in regularized braneworlds
- Induced higher-derivative massive gravity on a 2-brane in 4D Minkowski space
- Graviton confinement inside hypermonopoles of any dimension
- Braneworld sum rules and positive tension branes in a massive gravity
- A braneworld model in a massive gravity
- Softly higher-derivative massive gravity
- Gravity on de-Sitter 3-Brane, Induced Einstein-Hilbert Term and Massless Gravitons