11 papers
Dirac spectrum in the chirally symmetric phase of a gauge theory. II
Matteo Giordano
I discuss the consequences of the constraints imposed on the Dirac spectrum by the restoration of chiral symmetry in the chiral limit of gauge theories with two light fermion flavo…
Dirac spectrum in the chirally symmetric phase of a gauge theory. I
Matteo Giordano
I study the consequences of chiral symmetry restoration for the Dirac spectrum in finite-temperature gauge theories in the two-flavor chiral limit, using Ginsparg--Wilson fermions…
Comment on "Chiral symmetry restoration, the eigenvalue density of the Dirac operator, and the axial U(1) anomaly at finite temperature"
Matteo Giordano
Aoki, Fukaya, and Taniguchi claim that both the spectral density of the Dirac operator at the origin and the topological susceptibility must vanish identically for sufficiently sma…
Localization in the Dirac spectrum and gauge-field topology
Claudio Bonanno, Matteo Giordano
We study localization of the low Dirac modes in 3+1 dimensional pure gauge theory at zero and nonzero imaginary angle, with the aim of better characterizing th…
Localization of Dirac modes in a finite temperature SU(2) Higgs model
György Baranka, Matteo Giordano
Low-lying Dirac modes become localized at the finite-temperature transition in QCD and other gauge theories, indicating a strong connection between localization and deconfinement.…
Constraints on the Dirac spectrum from chiral symmetry restoration and the fate of symmetry
Matteo Giordano
I discuss chiral symmetry restoration in the chiral limit of QCD with two light quark flavours of mass , focussing on its consequences for scalar and pseudoscalar susce…
Center vortices and localized Dirac modes in the deconfined phase of (2+1)-dimensional lattice gauge theory
György Baranka, Dénes Berta, Matteo Giordano
We study the deconfinement transition in (2+1)-dimensional lattice gauge theory both as a percolation transition of center vortices and as a localization transition…
Phase diagram of a generalized Stephanov model for finite-density QCD
György Baranka, Matteo Giordano
We solve a random matrix model for QCD at finite chemical potential, obtained by generalizing the Stephanov model by modifying the random-matrix integration measure with a one-para…
Constraints on the Dirac spectrum from chiral symmetry restoration
Matteo Giordano
I derive constraints on the Dirac spectrum in the chirally symmetric phase of a gauge theory with two massless fermion flavors. Using only general properties of correlation functio…
Continuum limit of the mobility edge and taste-degeneracy effects in high-temperature lattice QCD with staggered quarks
Claudio Bonanno, Matteo Giordano
We study the effects of taste degeneracy on the continuum scaling of the localization properties of the staggered Dirac operator in high-temperature QCD using numerical simulations…
Localization of Dirac modes in the Higgs model at finite temperature
György Baranka, Matteo Giordano
We investigate the connection between localization of low-lying Dirac modes and Polyakov-loop ordering in the lattice Higgs model at finite temperature, probed wit…