# Instanton effects on chiral symmetry breaking and hadron spectroscopy

@article{Hasegawa2022InstantonEO, title={Instanton effects on chiral symmetry breaking and hadron spectroscopy}, author={Masayasu Hasegawa}, journal={Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)}, year={2022} }

This project aims to give indications to find monopole and instanton effects in QCD on the observables by experiments. First, we add the monopole and anti-monopole to the QCD vacuum of the quenched SU(3) and calculate the physical observables using the eigenvalues and eigenvectors of the overlap Dirac operator that preserves the exact chiral symmetry. We have found that the additional monopole and anti-monopole make the long monopole loops are closely related to the quark confinement without…

## One Citation

Chiral symmetry breaking and catalytic effect induced by monopole and instanton creations in QCD

- Physics
- 2022

In QCD, magnetic monopoles are crucial elements for the mechanism of color confinement, and instantons induce spontaneous chiral symmetry breaking. However, showing the relations among the monopoles,…

## References

SHOWING 1-10 OF 26 REFERENCES

Monopole and instanton effects in QCD

- PhysicsJournal of High Energy Physics
- 2020

Abstract
We aim to show the effects of the magnetic monopoles and instantons in quantum chromodynamics (QCD) on observables; therefore, we introduce a monopole and anti-monopole pair in the QCD…

Chiral symmetry breaking and catalytic effect induced by monopole and instanton creations in QCD

- Physics
- 2022

In QCD, magnetic monopoles are crucial elements for the mechanism of color confinement, and instantons induce spontaneous chiral symmetry breaking. However, showing the relations among the monopoles,…

Instantons and Monopoles

- Physics
- 2015

This study is part of a research program aimed to investigate the relations between instantons, monopoles, and chiral symmetry breaking. Monopoles are important 3-dimensional topological…

Instantons in QCD

- Physics
- 1998

The authors review the theory and phenomenology of instantons in quantum chromodynamics (QCD). After a general overview, they provide a pedagogical introduction to semiclassical methods in quantum…

Lattice QCD with Ginsparg-Wilson fermions

- Physics
- 1999

Lattice QCD using fermions whose Dirac operator obeys the Ginsparg-Wilson relation is perhaps the best known formulation of QCD with a finite cutoff. It reproduces all the low energy QCD…

Non-perturbative renormalization of the quark condensate in Ginsparg-Wilson regularizations

- Physics
- 2001

We present a method to compute non-perturbatively the renormalization constant of the scalar density for Ginsparg-Wilson fermions. It relies on chiral symmetry and is based on a matching of…

On the renormalized scalar density in quenched QCD

- Physics
- 2005

We present a non-perturbative determination of the renormalization factor ZS of the scalar density in quenched QCD with overlap fermions. Results are obtained at four values of the lattice spacing.…

Light Quark Masses with Overlap Fermions in Quenched QCD

- Physics
- 2001

We present the results of a computation of the sum of the strange and average up-down quark masses with overlap fermions in the quenched approximation. Since the overlap regularization preserves…