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Quoted papers: 2
Other papers: 3
Total: 5
- Type of paper
: Paper in journal
Title:
- Type of paper
: Paper in journal
Title: Vector mesonic phase and the chiral bag model
- Authors:
- Podobnik, Boris
- HORVAT, DUBRAVKO (98703)
- Tadiæ, Dubravko (48880)
Journal: Fizika B
Number: 1
ISSN: 1330-0016
Volume: 2
Year: 1993
Pages: from 49 to 71
Number of references: 11
Language: engleski
Summary: The mesonic sector of the standard chiral bag model was
enlarged to include the vector and axial vector components. New model
openly displays the current field identities. It's predictions are close to
the older model. This seems to be consequence of the chiral invariance and
of the PCAC and CVC constraints. Particle masses, the axial-vector coupling
constant, the proton magnetic moment and the charge radius have been
calculated.
Keywords: vector mesons, chiral symmetry, bag model, PCAC
- Type of paper
: Paper in journal
Title: A non-hedgehog solutions for the chiral bag
- Authors:
- HORVAT, DUBRAVKO (98703)
- Podobnik, Boris
- Tadiæ, Dubravko (48880)
Journal: Fizika B
Number: 1
ISSN: 1330-0016
Volume: 4
Year: 1995
Pages: from 71 to 91
Number of references: 15
Language: engleski
Summary: The chiral sigma model, embedded in the chiral-bag
environment is solved by an ansatz which conserves isospin and spin
separably. The chiral ansatz is treated in two ways: i) as a set of
operator equations of motion solved between quark states and ii) the
Hamiltonian operator is averaged between suitable hadron states and the
equations of motion are dervied for these mean fields. The second approach
is completely analogous to the usual one which employs hedgehog quarks,
which is also reproduced here. It turns out that the energy minimum (i.e.
hadron masses) can be found with chiral quarks as well as with hedgehog
quarks. Model predictions for the axial-vector coupling constant and for
the nucleon magnetic moment obtained with chiral quarks are of the same
quality or better than those obtained using the usual hedgehog-based
approximation.
Keywords: chiral symmetry, linear sigma model, hedgehog , bag model
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