LATTICEEASY: A Program for Lattice Simulations of Scalar Fields in an Expanding Universe

Abstract

We describe a C++ program that we have written and made available for calculating the evolution of interacting scalar fields in an expanding universe. The program is particularly useful for the study of reheating and thermalization after inflation. The program and its full documentation are available on the Web at http://physics.stanford.edu/gfelder/latticeeasy/ . In this paper we provide a brief overview of what the program does and what it is useful for.

4 pages, 2 figures

Cited by in corpus (176)

• f(R) theories
• Cosmological Non-Linearities as an Effective Fluid
• Dynamics of Symmetry Breaking and Tachyonic Preheating
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• Inflationary Cosmology
• Wave Dark Matter
• Primordial magnetogenesis
• Tachyonic Instability and Dynamics of Spontaneous Symmetry Breaking
• The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
• Superconformal Symmetry, NMSSM, and Inflation
• Self-resonance after inflation: oscillons, transients and radiation domination
• Parametric Resonance Production of Ultralight Vector Dark Matter
• Gauge-preheating and the end of axion inflation
• The Equation of State and Duration to Radiation Domination After Inflation
• The Gravitational-Wave Physics
• Gravitational Waves from Abelian Gauge Fields and Cosmic Strings at Preheating
• NANOGrav Signal from the End of Inflation and the LIGO Mass and Heavier Primordial Black Holes
• Symmetry Breaking and False Vacuum Decay after Hybrid Inflation
• Gravity Waves from Tachyonic Preheating after Hybrid Inflation
• Gravitational waves from gauge preheating
• Non-Gaussian Spikes from Chaotic Billiards in Inflation Preheating
• Gravitational perturbations from oscillons and transients after inflation
• Chern-Simons production during preheating in hybrid inflation models
• The art of simulating the early Universe -- Part I
• Gravitational waves from oscillons after inflation
• CosmoLattice
• Cosmological Fluctuations from Infra-Red Cascading During Inflation
• Role of quantum fluctuations in a system with strong fields: Onset of hydrodynamical flow
• QCD Axion Dark Matter with a Small Decay Constant
• Oscillons from String Moduli
• Gravitational Waves from Oscillons with Cuspy Potentials
• The Art of Lattice and Gravity Waves from Preheating
• Nonlinear Inflaton Fragmentation after Preheating
• Combined Preheating on the lattice with applications to Higgs inflation
• Gravitational waves from asymmetric oscillon dynamics?
• End of inflation, oscillons and matter-antimatter asymmetry
• Preheating a bouncing universe
• Postinflationary vacuum instability and Higgs-inflaton couplings
• Gravitational Radiation from First-Order Phase Transitions
• Lattice Simulations of Axion-U(1) Inflation
• The Higgs Portal to Cosmology
• Particle production from symmetry breaking after inflation and leptogenesis
• A New Semiclassical Picture of Vacuum Decay
• PSpectRe: A Pseudo-Spectral Code for (P)reheating
• Parametric Resonance in the Early Universe - A Fitting Analysis
• A New Mechanism for Bubble Nucleation: Classical Transitions
• Potential-driven Galileon inflation
• Lighting the Dark: The Evolution of the Post-Inflationary Universe
• Fate of Electroweak Vacuum during Preheating
• Non-Gaussianity from massless preheating
• Modified Supergravity and Early Universe: the Meeting Point of Cosmology and High-Energy Physics
• Preheating with Non-Minimal Kinetic Terms
• Energy distribution and equation of state of the early Universe: matching the end of inflation and the onset of radiation domination
• Gauge Field Preheating at the End of Inflation
• Freeze-in from Preheating
• (P)reheating after minimal Plateau Inflation and constraints from CMB
• What can we learn from the stochastic gravitational wave background produced by oscillons?
• Inflationary Butterfly Effect: Non-perturbative Dynamics From Small-Scale Features
• Preheating in New Inflation
• On preheating in alpha-attractor models of inflation
• Consistency of inflation and preheating in F(R) supergravity
• Nongaussianity from Particle Production During Inflation
• Inhomogeneous Fragmentation of the Rolling Tachyon
• Stochastic Gravitational-Wave Background from Axion-Monodromy Oscillons in String Theory During Preheating
• Small Field Polynomial Inflation: Reheating, Radiative Stability and Lower Bound
• Revealing the Cosmic History with Gravitational Waves
• Early Universe Higgs dynamics in the presence of the Higgs-inflaton and non-minimal Higgs-gravity couplings
• Non-Gaussianity from resonant curvaton decay
• How to generate a significant effective temperature for cold dark matter, from first principles
• Higgs-curvature coupling and post-inflationary vacuum instability
• Higgscitement: Cosmological Dynamics of Fine Tuning
• Nonlinear Dynamics of the Cold Atom Analog False Vacuum
• Accounting for the time evolution of the equation of state parameter during reheating
• Preheating After Modular Inflation
• Gravitational wave production after inflation with cuspy potentials
• The Fate of SUSY Flat Directions and their Role in Reheating
• Oscillon formation during inflationary preheating with general relativity
• Stochastic Backgrounds of Gravitational Waves from Cosmological Sources: Techniques and Applications to Preheating
• Foamy Dark Matter from Monodromies
• Inflaton mass in the nuMSM inflation
• Two phase reheating: CMB constraints on inflaton and dark matter phenomenology
• Sneutrino Inflation with $\alpha$-attractors
• PyCOOL - a Cosmological Object-Oriented Lattice code written in Python
• Preheating after Small-Field Inflation
• Formation of subhorizon black holes from preheating
• Lattice simulations of Abelian gauge fields coupled to axions during Inflation
• Characterizing the post-inflationary reheating history, Part I: single daughter field with quadratic-quadratic interaction
• Preheating in Palatini Higgs inflation on the lattice
• Analog cosmological reheating in an ultracold Bose gas
• A Cosmic Microscope for the Preheating Era
• Properties of oscillons in hilltop potentials: energies, shapes, and lifetimes
• Non-thermal production of Dark Matter after Inflation
• Spillway Preheating
• Inflating an Inhomogeneous Universe
• Hill crossing during preheating after hilltop inflation
• Impact of other scalar fields on oscillons after hilltop inflation
• Isocurvature and Curvaton Perturbations with Red Power Spectrum and Large Hemispherical Asymmetry
• On the Suppression of Parametric Resonance and the Viability of Tachyonic Preheating after Multi-Field Inflation
• Unveiling the nonlinear dynamics of a rolling axion during inflation
• Parametric resonance after hilltop inflation caused by an inhomogeneous inflaton field
• Gravitational Waves from Global Second Order Phase Transitions
• Lectures on Reheating after Inflation
• Study of the preheating phase of chaotic inflation
• Lattice Simulations of Inflation
• ALP dark matter with non-periodic potentials: parametric resonance, halo formation and gravitational signatures
• Challenges for Inflaton Dark Matter
• Gauge preheating with full general relativity
• Production of gravitational waves during preheating with nonminimal coupling
• Gravitational Waves from the Non-Perturbative Decay of Condensates along Supersymmetric Flat Directions
• Oscillon formation from preheating in asymmetric inflationary potentials
• Inflation, (P)reheating and Neutrino Anomalies: Production of Sterile Neutrinos with Secret Interactions
• A Non-minimally Coupled Potential for Inflation and Dark Energy after Planck 2015: A Comprehensive Study
• Electroweak Vacuum Metastability and Low-scale Inflation
• Leptogenesis and rescattering in supersymmetric models
• Analog vacuum decay from vacuum initial conditions
• Inflaton fragmentation in E-models of cosmological $\alpha$-attractors
• Explosive Axion Production from Saxion
• Dark matter production and reheating via direct inflaton couplings: collective effects
• Numerical study of inflationary preheating with arbitrary power-law potential and a realization of curvaton mechanism
• A Terminal Velocity on the Landscape: Particle Production near Extra Species Loci in Higher Dimensions
• Pair production due to an electric field in 1+1 dimensions and the validity of the semiclassical approximation
• Mass Renormalization in Lattice Simulations of False Vacuum Decay
• Bubble velocities and oscillon precursors in first-order phase transitions
• (P)reheating and gravitational waves in $\alpha$-attractor models
• Non-thermally trapped inflation by tachyonic dark photon production
• Preheating in Bubble Collisions
• Very Light Asymmetric Dark Matter
• Gravitational Radiation from Preheating with Many Fields
• Revisiting isocurvature bounds in models unifying the axion with the inflaton
• Enhanced Preheating after Multi-Field Inflation: On the Importance of being Special
• On Quantum Simulation Of Cosmic Inflation
• Preheating and Thermalization after Inflation
• Present and future of CosmoLattice
• Sensitivity of gravitational waves from preheating to a scalar field's interactions
• Preheating in Supersymmetric Theories
• Detectable Gravitational Waves from preheating probes non-thermal Dark Matter
• Gravitational Waves from Preheating in Inflation with Weyl Symmetry
• General Analytical Conditions for Inflaton Fragmentation: Quick and Easy Tests for its Occurrence
• The Effect of Non-minimally Coupled Scalar Field on Gravitational Waves from First-order Vacuum Phase Transitions
• Dependence of the amplitude of gravitational waves from preheating on the inflationary energy scale
• On the Expected Backreaction During Preheating
• Constraints on variations in inflaton decay rate from modulated preheating
• On the Expected Production of Gravitational Waves During Preheating
• Curvaton preheating revisited
• Primordial Power Spectrum and Bispectrum from Lattice Simulations of Axion-U(1) Inflation
• Inflaton Fragmentation After lambda phi^4 Inflation
• Particle Production near an AdS Crunch
• Non-perturbative decay of udd and QLd flat directions
• Revisiting oscillon formation in KKLT scenario
• Breakdown of the semiclassical approximation during the early stages of preheating
• Inflaton freeze-out
• Aspects of wave turbulence in preheating II: Rebirth of the nonminimal coupled models
• Non-Linear Resonance in Relativistic Preheating
• On the Cosmological Stability of the Higgs Instability
• Post-inflationary structure formation boosted by parametric self-resonance
• Quantitative classicality in cosmological interactions during inflation
• 20+ years of Inflation
• Aspects of Wave Turbulence in Preheating
• Lattice Simulation of Multi-Stream Inflation
• Impact of Dark Sector Preheating on CMB Observables
• Deriving super-horizon curvature perturbations from the dynamics of preheating
• Curvature perturbations from kinetic preheating after $\alpha$-attractor inflation
• Bunch-Davies initial conditions and non-perturbative inflationary dynamics in Numerical Relativity
• Stochastic Inflation in Numerical Relativity
• A model with two periods of inflation
• Non-thermal moduli production during preheating in $\alpha$-attractor inflation models
• (P)reheating Effects of the Kähler Moduli Inflation I Model
• Inflationary quantum dynamics and backreaction using a classical-quantum correspondence
• Gauge coupling jump and small instantons from a large non-minimal coupling
• Preheating and gravitational waves in large-field hilltop inflation
• Transient Acceleration after Non-minimal M-flation Preheating
• Simple third order operator-splitting schemes for stochastic mechanics and field theory
• Nonlinear Lattice Framework for Inflation: Bridging stochastic inflation and the $\delta N$ formalism
• Non-Gaussianity after many-field reheating
• Decay of a scalar condensate in two different approaches
• Gravitational Waves from Preheating with Modified Gravitational-wave Propagation