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Projects / Programmes source: ARIS

Theory of hadrons

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Research activity

Code Science Field Subfield
1.02.02  Natural sciences and mathematics  Physics  Theoretical physics 

Code Science Field
P210  Natural sciences and mathematics  Elementary particle physics, quantum field theory 
Keywords
Quark models, mesonic models, linear sigma model, Nambu--Jona-Lasinio model, electromagnetic properties of the nucleon, solitons, nuclear forces, two-meson systems, quantum chromodynamics, axial gauge, infrared singularities, Bloch-Nordsieck theorem.
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (3)
no. Code Name and surname Research area Role Period No. of publications
1.  02579  PhD Bojan Golli  Physics  Researcher  1998 - 2001  278 
2.  05458  PhD Matjaž Poljšak  Physics  Researcher  1998 - 2001  32 
3.  00676  PhD Mitja Rosina  Physics  Head  1998 - 2001  253 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,767 
Abstract
We explore the soliton description of nucleon and the soliton description of the constituent quark. We intend to derive the effective interaction between constituent quarks, static and dynamic (electromagnetic) properties of the the nucleon and the spectra of heavy two-meson systems. In the framework of soliton description we compare the linear sigma model and the Nambu--Jona-Lasinio model and explore their equivalence. We also compare different regularization schemes and their influence on the results. We explore the connection between quark models with mesonic fields as independent degrees of freedom, and models which describe mesons as excitations of the Dirac sea of quarks. We study the problem of the cancellation of infrared singularities of quantum chromodynamics in order to extend the application of QCD to the reduction of hadronic cross-sections in terms of elementary processes between quarks. One of indispensable stages of perturbation calculations in QCD is the choice of a gauge. For many purposes, it is convenient to choose the axial gauges; it is particularly useful in some steps of the proposed calculations. Therefore we continue to explore the consistency and equivalence of different variants of these gauges.
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