Topological susceptibility in QCD with two flavors and 3-5 colors -- a pilot study

Abstract

I present a calculation of the topological susceptibility ${\chi }_T$ in $SU(N_c)$ gauge theory with $N_c=3-5$ colors and $N_f=2$ degenerate flavors of fermions. The results lie on a common curve when expressed in terms of the combination $N_c{m}_{PS}^2{t}_0$ where $m_{PS}$ is the pseudoscalar meson mass and $t_0$ is the flow parameter. ${\chi }_T$ approaches its quenched value as the pseudoscalar mass becomes large. The lattice simulations use clover fermions. They are done at a single lattice spacing, roughly matched across $N_c$, and over a restricted range of fermion masses.

26 pages, 15 figures; fixed title

References in corpus (6)

• Infinite N phase transitions in continuum Wilson loop operators
• SU(N) gauge theories at large N
• Topological susceptibility and the sampling of field space in $N_f=2$ lattice QCD simulations
• Topological susceptibility in two-flavor lattice QCD with exact chiral symmetry
• The topological susceptibility in the large-N limit of SU(N) Yang-Mills theory
• The flavor dependence of $m_{\varrho }/f_{\pi }$

Cited by in corpus (4)

• Towards glueball masses of large-$N$ $\mathrm{SU}(N)$ pure-gauge theories without topological freezing
• Short flow-time coefficients of CP-violating operators
• The Large $N_c$ limit of QCD on the lattice
• The $\pi \pi$ scattering amplitude at large $N_{\text{c}}$