Study of the mass of pseudoscalar glueball with a deep neural network

Abstract

A deep neural network (DNN) is utilized to study the mass of the pseudoscalar glueball in lattice QCD based on Monte Carlo simulations. The DNN is constructed to extract the mass from the negative part of the topological charge density correlation function. The resulting mass estimates are compared with those obtained from conventional least-squares fitting. The DNN gives a pseudoscalar glueball mass of 2558(89)MeV, while the conventional fit gives 2612(112)MeV. The results suggest that the DNN provides a stable and complementary approach to conventional mass extraction from lattice correlation functions.

Comments: 4 figures