Meson Spectral Functions at finite Temperature

Abstract

The Maximum Entropy Method provides a Bayesian approach to reconstruct the spectral functions from discrete points in Euclidean time. The applicability of the approach at finite temperature is probed with the thermal meson correlation function. Furthermore the influence of fuzzing/smearing techniques on the spectral shape is investigated. We present first results for meson spectral functions at several temperatures below and above $T_c$. The correlation functions were obtained from quenched calculations with Clover fermions on large isotropic lattices of the size $(24-64{)}^3\times 16$. We compare the resulting pole masses with the ones obtained from standard 2-exponential fits of spatial and temporal correlation functions at finite temperature and in the vacuum. The deviation of the meson spectral functions from free spectral functions is examined above the critical temperature.

Lattice2001(hightemp), 3 pages, 6 figures

Cited by in corpus (40)

• The electrical conductivity and soft photon emissivity of the QCD plasma
• Transport coefficients, spectral functions and the lattice
• Lattice QCD at non-zero temperature
• Infinite temperature limit of meson spectral functions calculated on the lattice
• Charge transport and vector meson dissociation across the thermal phase transition in lattice QCD with two light quark flavors
• Color screening in (2+1)-flavor QCD
• Excited bottomonia in quark-gluon plasma from lattice QCD
• In-medium modifications of open and hidden strange-charm mesons from spatial correlation functions
• Thermal Broadening of Bottomonia: Lattice Non-Relativistic QCD with Extended Operators
• Temperature dependence of $\eta /s$ of strongly interacting matter: effects of the equation of state and the parametric form of $(\eta /s)(T)$
• Strong interaction and bound states in the deconfinement phase of QCD
• Quarkonium in-medium properties from realistic lattice NRQCD
• Signatures of charmonium modification in spatial correlation functions
• Lattice calculation of the heavy quark potential at non-zero temperature
• Does the QCD plasma contain propagating gluons?
• Pion spectral properties above the chiral crossover of QCD
• The Quark Propagator in the NJL Model in a self-consistent 1/Nc Expansion
• Chemical Equilibration in Relativistic Heavy Ion Collisions
• On static quark anti-quark potential at non-zero temperature
• Lattice Calculations of Heavy Quark Potential at Finite Temperature
• Pseudo-scalar meson spectral properties in the chiral crossover region of QCD
• Bethe-Salpeter amplitudes of Upsilons
• Dynamics of quark-gluon plasma from Field correlators
• Static quark correlators and quarkonium properties at non-zero temperature
• Calculation of Temperature-Dependent Hadronic Correlation Functions of Pseudoscalar and Vector Currents
• The Quark Gluon Plasma: lattice computations put to experimental test
• Comparison of Temperature-Dependent Hadronic Current Correlation Functions Calculated in Lattice Simulations of QCD and with a Chiral Lagrangian Model
• Quark Propagation in the Quark-Gluon Plasma
• Numerical study of hot strongly interacting matter
• In-medium bottomonium properties from lattice NRQCD calculations with extended meson operators
• Diquark and triquark correlations in the deconfined phase of QCD
• Calculation of the Pseudoscalar-Isoscalar Hadronic Current Correlation Functions of the Quark-Gluon Plasma
• Static Potential At Non-zero Temperatures From Fine Lattices
• MEM Analysis of Glueball Correlators at T>0
• Equation of State and Phase Transitions in the Nuclear and Hadronic Systems
• Charm hadrons above $T_c$
• Finite temperature spectral function of the $\sigma$ meson from large N expansion
• The bottomonium melting from screening correlators at high temperature
• Calculation of Screening Masses in a Chiral Quark Model
• Comparison of Models of Critical Opacity in the Quark-Gluon Plasma