Lattice QCD for Cosmology

2016/06/23 by Sz. Borsanyi, Sz. Borsányi, Z. Fodor +31 · 1 voice · 66 citations
Physics and Astronomy · #Astrophysics #Axion #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Electroweak interaction #Equation of state #Lattice QCD #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quantum mechanics #Quark #Theoretical physics #astro-ph.CO #hep-lat #hep-ph

paper · pdf · doi:10.48550/arxiv.1606.07494

published in arXiv (Cornell University) (Cornell University) · pdflatex, 40 figures; Section on experimental setups added, small corrections

openalex publication_date 2016/06/23 · arxiv created 2016/06/27 · arxiv updated 2016/06/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present a full result for the equation of state (EoS) in 2+1+1 (up/down, strange and charm quarks are present) flavour lattice QCD. We extend this analysis and give the equation of state in 2+1+1+1 flavour QCD. In order to describe the evolution of the universe from temperatures several hundreds of GeV to several tens of MeV we also include the known effects of the electroweak theory and give the effective degree of freedoms. As another application of lattice QCD we calculate the topological susceptibility (chi) up to the few GeV temperature region. These two results, EoS and chi, can be used to predict the dark matter axion's mass in the post-inflation scenario and/or give the relationship between the axion's mass and the universal axionic angle, which acts as a initial condition of our universe.

Cited by

• Interacting quark matter effects on the structure of compact stars
• Searching for a CEP signal with lattice QCD simulations
• Remarks on the Debye Length and the Topological Susceptibilty in Non-Abelian Gauge Theory
• Temperature dependence of topological susceptibility using gradient flow
• Classifying Topological Charge in SU(3) Yang-Mills Theory with Machine Learning
• Equation of state in 2+1 flavor QCD at high temperatures
• QCD axions and axionlike particles in a two-inflation scenario
• Maximum Entropy Inferences on the Axion Mass in Models with Axion-Neutrino Interaction
• Dirac neutrino mass generation from a Majorana messenger
• Holographic vector meson melting in a thermal gravity-dilaton background related to QCD
• Axion isocurvature perturbations in low-scale models of hybrid inflation
• More axions from strings

Discussions

• The universe cools ( adiabatically ) as it expands. The heat added by matter-antimatter annihilation delays that cooling. Think of annihilation as a phase transition. For temperatures $T$ higher than [stackexchange, 21 points]

Related

• QCD Cosmology from the Lattice Equation of State
• N_f=2+1 flavour equation of state
• Lattice QCD and Axion Cosmology
• Recent results on the Equation of State of QCD
• Lattice-QCD-based equations of state at finite temperature and density