Hadronic spectral functions in nuclear matter
نویسندگان
چکیده
منابع مشابه
Delta(1232) and Nucleon Spectral Functions in Hot Hadronic Matter
Modifications of ∆(1232) and nucleon spectral functions at finite temperature and baryon density are evaluated in terms of resonant scattering off thermal pions, as well as a renormalization of the vacuum ∆-width including vertex corrections. The interactions are based on effective Lagrangians of pions and baryon resonances, with underlying parameters (coupling constants and form factors) deter...
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Quantum transport theory is used to calculate the nucleon spectral function in infinite nuclear matter. A self-consistent description is obtained by utilizing the relations between collision rates and correlation functions. Static and dynamical self-energies are taken into account in the single particle propagators. The real parts of the non-static selfenergy contributions are calculated by dis...
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Dynamical correlations in asymmetric infinite nuclear matter are investigates in a transport theoretical approach. Self-energies due to short range correlations and their influence on the nucleon spectral functions are described in an approach accounting for a realistic treatment of mean-field dynamics and a self-consistently derived quasi-particle interaction. Landau-Migdal theory is used to d...
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Among various dynamical quantities in quantum chromodynamics (QCD), the spectral functions (SPFs) of hadrons play a special role in physical observables (See e.g. [1,2]). A well-known example is the cross section of the e+e− annihilation into hadrons, which can be expressed by SPF in the vector channel. SPF at finite temperature (T ) and/or baryon density is also a key concept to understand the...
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We study the in-medium properties of mesons (π, η, ρ) and baryon resonances in cold nuclear matter within a coupled-channel analysis. The meson self energies are generated by particle-hole excitations. Thus multi-peak spectra are obtained for the mesonic spectral functions. In turn this leads to medium-modifications of the baryon resonances. Special care is taken to respect the analyticity of t...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2004
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2004.05.016