Chiral symmetry restoration and the Georgi vector limit
نویسندگان
چکیده
منابع مشابه
Chiral Symmetry Restoration and the Georgi Vector Limit
The chiral phase transition at high temperature and/or density is interpreted in terms of Georgi’s vector limit. We discuss three cases as possible support for this scenario: Quark-number susceptibility, cool kaons in heavy-ion process and an instanton-molecule picture for chiral restoration. Both the notion of “mended symmetry” and the Georgi vector limit are suggested to be relevant in nuclea...
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I discuss recent work done with Gerry Brown on chiral phase transition at high temperature and/or density described in terms of Georgi’s vector limit. The notion of “mended symmetry” is suggested to play an important role in understanding the properties of hadrons in dense and/or hot matter before reaching the phase transition. It is shown that while the QCD vacuum in baryonfree space is resist...
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We study the generation of vector meson masses in the Hidden Local Symmetry (HLS) model of low energy QCD. After demoting the HLS to a hidden global symmetry (HGS), the ρ is explicitly shown to be massless for any value of the HS parameter a and the chiral partner of the pion appears as the Goldstone boson associated with the spontaneous breaking of the HGS, closely resembling the predictions o...
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We investigate numerically chiral symmetry restoration at finite temperature in the planar limit in the deconfined phase, both when it is stable and when the system is supercooled. We find chiral symmetry restoration at Tχ = Td, where Td is the temperature of the deconfinement transition in pure gauge theory and Tχ < Td in the supercooled deconfined phase. In the stable case the spectrum of the...
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Lattice gauge theories with Wilson fermions break chiral symmetry. In the U(1) axial vector current this manifests itself in the anomaly. On the other hand it is generally expected that the axial vector flavour mixing current is non-anomalous. We give a short, but strict proof of this to all orders of perturbation theory, and show that chiral symmetry restauration implies a unique multiplicativ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1994
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)91382-x