The topological objects near the chiral crossover transition in QCD

Abstract

We study the underlying topology of gauge fields in 2+1 flavor QCD with domain wall fermions on lattices of size $32^3\times 8$, at and immediately above the chiral crossover transition. Using valence overlap fermions with exact index theorem, we focus on its zero modes for different choices of periodicity phases along the temporal direction. Our studies show that the zero modes are due to fractionally charged topological objects, the instanton-dyons. We further provide qualitative study of the interactions between those and compare with the available semi-classical results, finding remarkably accurate agreement in all cases.

arXiv commentV3

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Cited by in corpus (13)

• 50 Years of Quantum Chromodynamics
• Phase Transitions in Particle Physics -- Results and Perspectives from Lattice Quantum Chromo-Dynamics
• Topology and axions in QCD
• Eigenvalues of the QCD Dirac matrix with improved staggered quarks in the continuum limit
• Baryogenesis and helical magnetogenesis from the electroweak transition of the minimal Standard Model
• Towards a semi-classical description of QCD vacuum around $T_c$
• Lectures on nonperturbative QCD ( Nonperturbative Topological Phenomena in QCD and Related Theories)
• Deconfinement Phase Transition in the $SU(3)$ Instanton-dyon Ensemble
• Strongly coupled QFT dynamics via TQFT coupling
• Correlating confinement to topological fluctuations near the crossover transition in QCD
• Vacuum and thermal fluctuation energies of a soliton at finite temperatures
• Imprints of $U_A(1)$ chiral anomaly and disorder in the Dirac eigenspectrum of QCD at finite temperature
• Recent Progress on the QCD Phase Diagram