Trans-Planckian Censorship and the Swampland

Abstract

In this paper, we propose a new Swampland condition, the Trans-Planckian Censorship Conjecture (TCC), based on the idea that in a consistent quantum theory of gravity sub-Planckian quantum fluctuations should remain quantum and never become larger than the Hubble horizon and freeze in an expanding universe. TCC leads to conditions that are similar to the refined dS Swampland conjecture. For example, applied to the case of cosmologies driven only by a scalar field, the TCC imposes an upper bound of $2/\sqrt{d-2}$ on the asymptotic value of $|V^{\prime }|/V$. Additionally, it implies that a monotonically decreasing potential across $[{\varphi }_1,{\varphi }_2]$ satisfies $V({\varphi }_2)\le A\cdot \exp (-2({\varphi }_2-{\varphi }_1))/\sqrt{(d-1)(d-2)})$ for some $\mathcal{O}(1)$ constant $A$. Like the dS Swampland conjecture, the TCC forbids long-lived meta-stable dS spaces, but allows sufficiently short-lived ones.

arXiv commentThe changes made to the abstract and introduction in the previous version are clarified

References in corpus (28)

• de Sitter Vacua in String Theory
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• On the Geometry of the String Landscape and the Swampland
• Pre-Big-Bang in String Cosmology
• The Trans-Planckian Problem of Inflationary Cosmology
• Distance and de Sitter Conjectures on the Swampland
• On the Cosmological Implications of the String Swampland
• Bounds on Slow Roll and the de Sitter Swampland
• On the Generation of a Scale-Invariant Spectrum of Adiabatic Fluctuations in Cosmological Models with a Contracting Phase
• The Robustness of Inflation to Changes in Super-Planck-Scale Physics
• A generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation
• Trans-Planckian Censorship and Inflationary Cosmology
• On the de Sitter swampland criterion
• Inflationary Constraints on Type IIA String Theory
• Trans-Planckian Issues for Inflationary Cosmology
• Initial Conditions for Inflation
• On Exclusion of Positive Cosmological Constant
• Further refining the de Sitter swampland conjecture
• On Classical de Sitter Vacua in String Theory
• Quantum Breaking Bound on de Sitter and Swampland
• New constraints on classical de Sitter: flirting with the swampland
• Conditions for (No) Eternal Inflation
• The quantum swampland
• Open problems on classical de Sitter solutions
• Stability, Tunneling and Flux Changing de Sitter Transitions in the Large Volume String Scenario
• Transplanckian Censorship and Global Cosmic Strings
• Eternal Inflation in Swampy Landscapes
• Gravitational Instabilities and Censorship of Large Scalar Field Excursions

Cited by in corpus (173)

• Lectures on the Swampland Program in String Compactifications
• Primordial gravitational waves from NANOGrav: a broken power-law approach
• The Dark Dimension and the Swampland
• Merging the Weak Gravity and Distance Conjectures Using BPS Extremal Black Holes
• Swampland Conjectures for Strings and Membranes
• Sharpening the Distance Conjecture in Diverse Dimensions
• The Price of Curiosity: Information Recovery in de Sitter Space
• Recent developments in warm inflation
• Primordial black hole constraints with Hawking radiation -- a review
• IR/UV Mixing, Towers of Species and Swampland Conjectures
• The Gravitino and the Swampland
• Constraining power of asymptotic safety for scalar fields
• Tackling the SDC in AdS with CFTs
• Dimensional Reduction and (Anti) de Sitter Bounds
• The challenge of ruling out inflation via the primordial graviton background
• The FL bound and its phenomenological implications
• The Convex Hull Swampland Distance Conjecture and Bounds on Non-geodesics
• Finiteness and the Swampland
• Quantifying Scalar Field Dynamics with DESI 2024 Y1 BAO measurements
• Holography and the KKLT Scenario
• Runaway potentials in warm inflation satisfying the swampland conjectures
• Inflationary physics and transplanckian conjecture in the Stringy Running-Vacuum-Model: from the phantom vacuum to the true vacuum
• de Sitter in non-supersymmetric string theories: no-go theorems and brane-worlds
• Intermittent null energy condition violations during inflation and primordial gravitational waves
• Large anisotropies of the stochastic gravitational wave background from cosmic domain walls
• Heterotic de Sitter Beyond Modular Symmetry
• Modified gravity realizations of quintom dark energy after DESI DR2
• Weak Gravity Bounds in Asymptotic String Compactifications
• Asymptotic Accelerated Expansion in String Theory and the Swampland
• Emergent Cosmology from Matrix Theory
• Asymptotic Scalar Field Cosmology in String Theory
• Dynamical Cobordism Conjecture: Solutions for End-of-the-World Branes
• Asymptotic Safety: Swampland or Wonderland?
• Gravity Waves and Primordial Black Holes in Scalar Warm Little Inflation
• Asymptotic Observables and the Swampland
• Dark Matter and Gravity Waves from a Dark Big Bang
• Quintessence and the Swampland: The numerically controlled regime of moduli space
• Quantum aspects of chaos and complexity from bouncing cosmology: A study with two-mode single field squeezed state formalism
• On Primordial Black Holes from Rapid Turns in Two-field Models
• Effective Theory of Warped Compactifications and the Implications for KKLT
• Reheating in small-field inflation on the brane: The Swampland Criteria and observational constraints in light of the PLANCK 2018 results
• Cosmological consequences of a principle of finite amplitudes
• Tsallis holographic dark energy for inflation
• (Quasi-) de Sitter solutions across dimensions and the TCC bound
• On TCS $G_2$ manifolds and 4D Emergent Strings
• Phenomenological implications of modified loop cosmologies: an overview
• de Sitter Space as a Glauber-Sudarshan State: II
• Reissner-Nordström black holes surrounded by perfect fluid dark matter: testing the viability of weak gravity conjecture and weak cosmic censorship conjecture simultaneously
• Swampland Constraints on Neutrino Masses
• de Sitter Space as a Glauber-Sudarshan State
• The Wave Function of Simple Universes, Analytically Continued From Negative to Positive Potentials
• Weak Gravity Conjecture Validation with Photon Spheres of Quantum Corrected AdS-Reissner-Nordstrom Black Holes in Kiselev Spacetime
• Rapidly Descending Dark Energy and the End of Cosmic Expansion
• Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory
• Emergent Metric Space-Time from Matrix Theory
• Torsion in string-inspired cosmologies and the universe dark sector
• Weak Cosmic Censorship and Weak Gravity Conjectures in CFT Thermodynamics
• Optimal parameterizations for observational constraints on thawing dark energy
• Stringy Running Vacuum Model and current Tensions in Cosmology
• The unbearable lightness of charged gravitini
• Supersymmetry Breaking and Stability in String Vacua: brane dynamics, bubbles and the swampland
• Charting the landscape of (anti-) de Sitter and Minkowski solutions of 10d supergravities
• Tachyonic de Sitter solutions of 10d type II supergravities
• Quantum Circuit Complexity of Primordial Perturbations
• Pair Production and Gravity as the Weakest Force
• Swampland, Trans-Planckian Censorship and Fine-Tuning Problem for Inflation: Tunnelling Wavefunction to the Rescue
• On Asymptotic Dark Energy in String Theory
• Brane inflation and Trans-Planckian censorship conjecture
• Cosmological Trans-Planckian Conjectures are not Effective
• Negative scalar potentials and the swampland: an Anti-Trans-Planckian Censorship Conjecture
• Spectrum of Cuscuton Bounce
• Crisis on Infinite Earths: Short-lived de Sitter Vacua in the String Theory Landscape
• On the Trans-Planckian Censorship Conjecture and the Generalized Non-Minimal Coupling
• Effective Theories as Truncated Trans-Series and Scale Separated Compactifications
• Solution of the Size and Horizon Problems from Classical String Geometry
• Mass Hierarchies and Quantum Gravity Constraints in DKMM-refined KKLT
• To curve, or not to curve: Is curvature-assisted quintessence observationally viable?
• de Sitter Decays to Infinity
• Quantum gravity constraints on scale separation and de Sitter in five dimensions
• Lagrangian reconstruction of Barrow holographic dark energy in interacting tachyon model
• Reconstructing k-essence: Unifying the attractor $n_S(N)$ and the swampland criteria
• Fibre inflation and precision CMB data
• Nearly scale-invariant curvature modes from entropy perturbations during graceful exit
• Superheavy dark matter from the natural inflation in light of the highest-energy astroparticle events
• Modular Curves and the Refined Distance Conjecture
• Resurgence of a de Sitter Glauber-Sudarshan State: Nodal Diagrams and Borel Resummation
• Dilatonic (Anti-)de Sitter Black Holes and Weak Gravity Conjecture
• Conifold dynamics and axion monodromies
• Contracting Cosmologies and the Swampland
• Quantum Discrete Levels of the Universe from the Early Trans-Planckian Vacuum to the Late Dark Energy
• De Sitter Quantum Breaking, Swampland Conjectures and Thermal Strings
• Confinement in de Sitter Space and the Swampland
• Instability of de Sitter space under thermal radiation in different vacua
• A CFT Distance Conjecture
• Primordial Black Holes Dark Matter and Secondary Gravitational Waves from Warm Higgs-G Inflation
• How a four-dimensional de Sitter solution remains outside the swampland
• Dark energy with the help of interacting dark sectors
• Parity violation in primordial tensor non-Gaussianities from matter bounce cosmology
• Scalar Cosmological Perturbations from Quantum Entanglement within Lorentzian Quantum Gravity
• Features of a dark energy model in string theory
• On Quantum Simulation Of Cosmic Inflation
• A Note on Membrane Interactions and the Scalar potential
• Large and small field inflation from hyperbolic sigma models
• Dark Radiation and the Hagedorn Phase
• Quantum Fisher Cosmology: Confronting Observations and the Trans-Planckian Problem
• Swampland de Sitter Conjectures in No-Scale Supergravity Models
• On the correspondence between black holes, domain walls and fluxes
• Rejuvenating the hope of a swampland consistent inflated multiverse with tachyonic inflation in the high energy RS-II Braneworld
• TCC bounds on the static patch of de Sitter space
• Consistency of Cubic Galileon Cosmology: Model-Independent Bounds from Background Expansion and Perturbative Analyses
• Pole inflation from non-minimal coupling to gravity
• Eternal inflation in light of Wheeler-DeWitt equation
• Asymptotic safety, quantum gravity, and the swampland: a conceptual assessment
• The Swampland at Large Number of Space-Time Dimensions
• Lorentz violating inflation and the Swampland
• Swampland Constraints on No-Boundary Quantum Cosmology
• The Power Spectrum of Density Perturbations in Chain Inflation
• S-dual Inflation and the String Swampland
• Limitations of an Effective Field Theory Treatment of Early Universe Cosmology
• Implication of the swampland distance conjecture on the Cohen-Kaplan-Nelson bound in de Sitter space
• Dependence of the amplitude of gravitational waves from preheating on the inflationary energy scale
• Purely non-perturbative AdS vacua and the swampland
• Von Neumann algebra description of inflationary cosmology
• Catalytic Creation of Bubble Universe Induced by Quintessence in Five Dimensions
• Emergent universe revisited through the CSL theory
• Quantum-Ordering Ambiguities in Weak Chern-Simons 4D Gravity and Metastability of the Condensate-Induced Inflation
• Shocks and Information Exchange in de Sitter Space
• $\alpha$-attractor potentials in loop quantum cosmology
• A Bouncing Cosmology from VECROs
• Exponential quintessence with momentum coupling to dark matter
• Constraining the quintessential $\alpha$-attractor inflation through dynamical horizon exit method
• Bulk/boundary Modular Quintessence and DESI
• Multi-field inflation from single-field models
• Deriving the Gibbons-Maldacena-Nunez no-go theorem from the Raychaudhuri equation
• What if string theory has a de Sitter excited state?
• Axion Monodromy Inflation, Trapping Mechanisms and the Swampland
• Charged Nariai black holes on the dark bubble
• Cosmic-Quantum Connections: Assessing the Viability of Weak Gravity and Weak Cosmic Censorship Conjectures in Kerr-Newman-Kiselev-Letelier Black Hole
• The Trans-Planckian problem in Tachyacoustic Cosmology
• Generalizing the Swampland: Embedding $P(X,\phi )$ Inflationary Theories in a Curved Multi-field Space
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• A Stringy Effect on Hawking Radiation
• Trans-Planckian censorship constraints on properties and cosmological applications of axion-like fields
• Confinement from Distance in Metric Space and its Relation to Cosmological Constant
• Graviton-Photon Oscillations as a Probe of Quantum Gravity
• Black hole production, eternal inflation, and information in quasi-de Sitter space
• CMB bispectrum constraints on DHOST inflation
• Dissipative Emergence of Inflation from Quasi-Cyclic Universe
• The string theory swampland in the Euclid, SKA and Vera Rubin observatory era
• Quantum Gravity, Hydrodynamics and Emergent Cosmology: A Collection of Perspectives
• Smoking-gun signatures of bounce cosmology from echoes of relic gravitational waves
• Stability of Extremal Black Holes and Weak Cosmic Censorship Conjecture in Kiselev Spacetime
• Constraining matter-bounce scenario from scalar-induced vector perturbations
• A (strictly) contemporary perspective on trans-Planckian censorship
• The Trans-Planckian Censorship Conjecture in different frameworks of viable inflation
• Entanglement entropy of cosmological perturbations for S-brane Ekpyrosis
• At the End of the World: Local Dynamical Cobordism
• Symmetry Points of $\mathcal{N}=1$ Modular Geometry
• The dark dimension, proton decay, and the length of the M-theory interval
• Supersymmetric Horizons at the Edge of Effective Field Theory
• A Computational Companion to Transient de Sitter and Quasi de Sitter States in SO(32) and E_8 X E_8 Heterotic String Theories I: Formalisms
• Dynamical-System analysis of single-axion monodromy inflation with periodically-modulated potentials
• Cosmological Implications of Thermodynamic Split Conjecture
• Background instability of quintessence model in light of entropy and distance conjecture
• Breaking Free from the Swampland of Impossible Universes through the DESI Portal
• Constraining Spatial Curvature with Priors from Swampland Conjectures
• Scale-dependence in DHOST inflation
• Emergent de Sitter Cosmology Near Black Hole Horizon
• Theoretical Consistency and Observational Constraints on Entropic Cosmology
• Wave function of the universe in the presence of trans-Planckian censorship
• Hamilton-Jacobi analysis of noncanonical inflation in $f(R,T)$ gravity: Constraints from Planck/ACT data, and theoretical bounds
• Infeasibility of Graviton Detection as Cosmic Censorship
• UV Effects and Short-Lived Hawking Radiation: Alternative Resolution of Information Paradox