Scalar Speed Limits and Cosmology: Acceleration from D-cceleration

Abstract

Causality on the gravity side of the AdS/CFT correspondence restricts motion on the moduli space of the N=4 super Yang Mills theory by imposing a speed limit on how fast the scalar field may roll. This effect can be traced to higher derivative operators arising from integrating out light degrees of freedom near the origin. In the strong coupling limit of the theory, the dynamics is well approximated by the Dirac-Born-Infeld Lagrangian for a probe D3-brane moving toward the horizon of the AdS Poincare patch, combined with an estimate of the (ultimately suppressed) rate of particle and string production in the system. We analyze the motion of a rolling scalar field explicitly in the strong coupling regime of the field theory, and extend the analysis to cosmological systems obtained by coupling this type of field theory to four dimensional gravity. This leads to a mechanism for slow roll inflation for a massive scalar at subPlanckian VEV without need for a flat potential (realizing a version of k-inflation in a microphysical framework). It also leads to a variety of novel FRW cosmologies, some of which are related to those obtained with tachyon matter.

39 pages. v2: References added. v3: comments on conformal and curvature couplings revised

References in corpus (7)

• Towards Inflation in String Theory
• DBI in the Sky
• Cosmological dynamics of the tachyon with an inverse power-law potential
• S-Brane Thermodynamics
• M-theory cosmologies from singular Calabi-Yau compactifications
• Flop Transitions in M-theory Cosmology
• Non-Supersymmetric Theories with Light Scalar Fields and Large Hierarchies

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• Covariant second-order perturbations in generalized two-field inflation
• Causality and Stability from Acoustic Geometry
• Unparticle-Higgs Mixing: MSW Resonances, See-saw Mechanism and Spinodal Instabilities
• Galactic Halos and Black Holes in Non-Canonical Scalar Field Theories
• Tachyon Mimetic Inflation as an Instabilities-Free Model
• Thermal non-Gaussianity in Near-Milne universe
• Bounds on Tensor wave and Twisted Inflation
• Halo/Galaxy Bispectrum with Equilateral-type Primordial Trispectrum
• The growth of DM and DE perturbations in DBI non-canonical scalar field scenario
• Non-Gaussianities in DBI inflation with angular motion
• Perturbation Theory in k-Inflation Coupled to Matter
• Constraints on Single-Field Inflation
• The Trispectrum as a Diagnostic of Primordial Orthogonal non-Gaussianities
• The interplay of CMB temperature lensing power reconstruction with primordial non-Gaussianity of local type
• Non-Linear Resonance in Relativistic Preheating
• An Expansion of Well Tempered Gravity
• AdS braneworld with Backreaction
• Principal Components of CMB non-Gaussianity
• B-modes and the sound speed of primordial fluctuations
• Lecture notes on non-Gaussianity
• Enhanced (p)reheating in DBI Inflation
• Speed limit in internal space of domain walls via all-order effective action of moduli motion
• Constraining Modified Gravity with Large non-Gaussianities
• DBI analog of a decaying vacuum cosmology
• Dirac-Born-Infeld-Einstein theory with Weyl invariance
• Studying G-axion Inflation model in light of PLANCK
• Cosmological evolution of a D-brane
• Generalizing the Swampland: Embedding $P(X,\phi )$ Inflationary Theories in a Curved Multi-field Space
• On the Production of Open Strings from Brane Anti-Brane Annihilation
• Non-Gaussianity in a general kind noncanonical warm inflation
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
• Effective Potential for Revolving D-branes
• Quantum Cosmology Aspects Of D3 Branes and Tachyon Dynamics
• Anisotropic power-law inflation for models of non-canonical scalar fields non-minimally coupled to a two-form field
• K-Inflation in Noncommutative Space-Time
• Non-Gaussian signatures of Tachyacoustic Cosmology
• Inflation in string theory confronts data/Les modèles d'inflation en théorie des cordes face aux observations
• Gravitational Dual of Tachyon Condensation
• DBI Lifshitz Inflation
• Attractor Solutions in Tachyacoustic Cosmology
• Shock waves as branes with throats
• Non-adiabatic primordial fluctuations
• Frustration of resonant preheating by exotic kinetic terms
• Observational Viability of the Intermediate DBI Inflation in the Presence of a Minimal Length
• Observational Restrictions and Slow-Roll D-brane Inflation in the Special $F(\varphi ,T)$ Gravity
• Trapped Brane Features in DBI Inflation
• Cosmological singularities in non-canonical models of dark energy
• Hawking-Moss Tunneling with a Dirac-Born-Infeld Action
• Superimposed Oscillations in Brane Inflation
• General-relativistic spin system
• Probing Inflation with Precision Bispectra
• Primordial non-Gaussianity in noncanonical warm inflation: three- and four-point correlations
• Anisotropic power-law inflation for the Sáez-Ballester theory non-minimally coupled to a vector field
• Viable Intermediate Inflation in the Mimetic DBI Model
• The Non-Adiabatic Pressure Perturbation and Non-Canonical Kinetic Terms in Multifield Inflation
• QCD Axions and CMB Anisotropy
• Ultra-light dark matter with non-canonical kinetics reopening the mass window
• Propagation Constraints and Classical Solutions in K-essence Like Theories
• A Homogeneous and Isotropic Universe in Lorentz Gauge Theory of Gravity
• Inflation driven by scalar field and solid matter
• String Loop Moduli Stabilisation and Cosmology in IIB Flux Compactifications
• Cherenkov in the Sky: Measuring the Sound Speed of Primordial Scalar Fluctuations
• Revisiting the Chern-Simons interaction during inflation with a non-canonical pseudo-scalar
• Electromagnetic Radiation in a Semi-Compact Space
• Testing a Two Field Inflation Beyond the Slow-Roll Approximation
• Kinematic equivalence between models driven by DBI field with constant $\gamma$ and exotic holographic quintessence cosmological models
• Slow-walking inflation
• A new branch of inflationary speed limits
• Q-balls in K-field theory
• Primordial non-Gaussianity in noncanonical warm inflation with nonminimal derivative coupling
• Inflationary predictions at small gamma
• Spinflation with backreaction
• Dilaton, Screening of the Cosmological Constant and IR-Driven Inflation
• On the four-dimensional effective theories in brane-worlds
• Brane/flux annihilation in double-throat system
• Inflation: a quantum laboratory on cosmological scales
• Effective Action of a Dynamical D$p$-brane with Background Fluxes
• Cosmological Perturbations in Inflationary Models with Anisotropic Space-Time Scaling in Lifshitz Background
• Complete factorization of equations of motion for generalized scalar field theories
• Non-perpetual Eternal Inflation and the Emergent de Sitter Swampland Conjecture
• Cosmology on Compact and Stable Supergravity Background
• Hamilton-Jacobi formalism for Generalized Chaplygin Gas models
• Primordial Fluctuations in String Cosmology
• Cosmological signatures of brane inflation
• Probing single-field inflation: predictions, constraints, and theoretical viewpoints
• Inhomogeneous Reheating Scenario with DBI fields
• On the validity of cosmic no-hair conjecture in an anisotropic inflationary model
• Phenomenology of SUGRA Extensions of the Starobisnky Model
• Reconstruction of a dark energy model for the Dirac-Born-Infeld scalar field with the Hubble and DESI data via Gaussian process
• Instability of the cosmological DBI-Galileon in the non-relativistic limit
• Bouncing cosmologies in the presence of a Dirac-Born-Infeld field
• Regularization and conformal transformations of the power spectrum in general single field inflation
• Hamilton-Jacobi analysis of noncanonical inflation in $f(R,T)$ gravity: Constraints from Planck/ACT data, and theoretical bounds
• Recent results and perspectives on cosmology and fundamental physics from microwave surveys
• Constructing and solving cosmologies of early universes with dark energy and matter. I
• Weakly Broken Galileon Symmetry in Cosmology