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Conformal anomaly and the vector coupling in dense matter

Title
Conformal anomaly and the vector coupling in dense matter
Author
이현규
Issue Date
2011-08
Publisher
AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Citation
PHYSICAL REVIEW D, 84, 3, 034011
Abstract
We construct an effective chiral Lagrangian for hadrons implemented by the conformal invariance and discuss the properties of nuclear matter at high density. The model is formulated based on two alternative assignment, "naive'' and mirror, of chirality to the nucleons. It is shown that taking the dilaton limit, in which the mended symmetry of Weinberg is manifest, the vector-meson Yukawa coupling becomes suppressed and the symmetry energy becomes softer as one approaches the chiral phase transition. This leads to softer equations of state (EoS) and could accommodate the EoS without any exotica consistent with the recent measurement of a 1.97 +/- 0.04M(circle dot) neutron star.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.84.034011
ISSN
2470-0010
DOI
10.1103/PhysRevD.84.034011
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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