Cosmic Decoherence: Massive Fields
arXiv:1608.07909 · doi:10.1007/JHEP10(2016)072
Abstract
We study the decoherence of massive fields during inflation based on the Zurek's density matrix approach. With the cubic interaction between inflaton and massive fields, the reduced density matrix for the massive fields can be calculated in the Schrödinger picture which is related to the variance of the non-Gaussian exponent in the wave functional. The decoherence rate is computed in the one-loop form from functional integration. For heavy fields with , quantum fluctuations will easily stay in the quantum state and decoherence is unlikely. While for light fields with mass smaller than , quantum fluctuations are easily decohered within e-folds after Hubble crossing. Thus heavy fields can play a key role in studying problems involving inflationary quantum information.
26 pages, 3 figures; added references and corrected typos
References in corpus (30)
- Decoherence, einselection, and the quantum origins of the classical
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
- Primordial Non-Gaussianities from Inflation Models
- Semiclassicality and Decoherence of Cosmological Perturbations
- Quasi-Single Field Inflation and Non-Gaussianities
- Schwinger-Keldysh Propagators from AdS/CFT Correspondence
- Inflation and squeezed quantum states
- On Soft Limits of Inflationary Correlation Functions
- Quantum-to-classical transition for fluctuations in the early Universe
- Effective field theory approach to quasi-single field inflation and effects of heavy fields
- Quasi-Single Field Inflation with Large Mass
- Quantum-to-classical Transition of Cosmological Perturbations for Non-vacuum Initial States
- Pointer states for primordial fluctuations in inflationary cosmology
- Inflation, Cosmic Perturbations and Non-Gaussianities
- Open EFTs, IR Effects and Late-Time Resummations: Systematic Corrections in Stochastic Inflation
- On the Decoherence of Primordial Fluctuations During Inflation
- Loop Corrections to Standard Model Fields in Inflation
- A model with cosmological Bell inequalities
- Equilateral non-Gaussianity from heavy fields
- Quantum Decoherence During Inflation from Gravitational Nonlinearities
- Emergence of classicality for primordial fluctuations: Concepts and analogies
- Planck-Suppressed Operators
- Symplectic evolution of Wigner functions in markovian open systems
- Quantum noise and large-scale cosmic microwave background anisotropy
- Decoherence from Isocurvature Perturbations in Inflation
- Exact positivity of the Wigner and P-functions of a Markovian open system
- Particle production and classical condensates in de Sitter space
- A Direct Probe of the Evolutionary History of the Primordial Universe
- On the initial condition of inflationary fluctuations
- Quantum Decoherence with Holography
Cited by in corpus (19)
- Non-Gaussianity as a Particle Detector
- On the Effective Field Theory for Quasi-Single Field Inflation
- Warm Quasi-Single Field Inflation
- Cosmic decoherence: primordial power spectra and non-Gaussianities
- On the Decoherence of Primordial Gravitons
- Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
- Quantum entanglement in cosmology
- An Open Effective Field Theory for light in a medium
- Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
- Decoherence of Cosmological Perturbations from Boundary Terms and the Non-Classicality of Gravity
- How Decoherence Affects the Probability of Slow-Roll Eternal Inflation
- Entropy production in inflation from spectator loops
- On Quantum Simulation Of Cosmic Inflation
- The effect of quantum decoherence on inflationary gravitational waves
- Entanglement negativity in de Sitter biverse from Stringy Axionic Bell pair: An analysis using Bunch-Davies vacuum
- Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
- Some measures for fermionic entanglement in the cosmological de Sitter spacetime
- Loop corrections to primordial fluctuations from inflationary phase transitions
- Gauge protected entanglement between gravity and matter