11 papers
Higher-order hopping-parameter expansion by human-AI collaboration
Masakiyo Kitazawa, Tatsuya Wada
We develop efficient algorithms for evaluating higher-order terms in the hopping-parameter expansion of on gauge configurations. The resulting…
Soft mode dynamics associated with QCD critical point and color superconductivity -- pseudogap, anomalous dilepton production and electric conductivity
Masakiyo Kitazawa, Teiji Kunihiro
We give a systematic account of the soft mode dynamics of QCD critical point and the two-flavor color-superconductivity based on the 2-flavor Nambu--Jona-Lasinio model, and investi…
Lee-Yang zeros and edge singularity in a mean-field approach
Tatsuya Wada, GyÅzÅ Kovács, Masakiyo Kitazawa +1
The analytic structure of the partition function in finite-volume systems is investigated at complex chemical potentials in a minimal mean-field effective model of QCD with finite-…
Lee-Yang-zero ratio method in three-dimensional Ising model
Tatsuya Wada, Masakiyo Kitazawa, Kazuyuki Kanaya
By performing Monte Carlo simulations of the three-dimensional Ising model, we apply the recently proposed Lee-Yang-zero ratio (LYZR) method to determine the location of the critic…
Thermodynamics of fermionic excitations in heavy-quark QCD
Kei Tohme, Takahiro M. Doi, Masakiyo Kitazawa +2
We investigate the thermodynamic properties of fermionic excitations in heavy-quark QCD on the lattice with Wilson fermions. The grand potential is calculated analytically in the h…
Optimal collision-energy range for realizing macroscopic high-baryon-density matter
Hidetoshi Taya, Asanosuke Jinno, Masakiyo Kitazawa +1
We investigate the volume and lifetime of the high baryon-density matter created in heavy-ion collisions and estimate the optimal collision-energy range to realize the high baryon-…