Abstract
Chemical-potential dependence of pi and sigma meson masses is analyzed at both real and imaginary chemical potentials, μR and μI, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model that possesses both the extended Z3 symmetry and chiral symmetry. In the μI region, the meson masses have the Roberge-Weiss periodicity. The μI dependence of the meson masses becomes stronger as temperature increases. We argue that meson masses and physical quantities in the μR region will be determined from lattice QCD data on meson masses in the μI region by using the PNJL model, if the data are measured in the future.
| Original language | English |
|---|---|
| Article number | 076008 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 79 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Apr 1 2009 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
Cite this
Meson mass at real and imaginary chemical potentials. / Kashiwa, Kouji; Matsuzaki, Masayuki; Kouno, Hiroaki; Sakai, Yuji; Yahiro, Masanobu.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 79, No. 7, 076008, 01.04.2009.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Meson mass at real and imaginary chemical potentials
AU - Kashiwa, Kouji
AU - Matsuzaki, Masayuki
AU - Kouno, Hiroaki
AU - Sakai, Yuji
AU - Yahiro, Masanobu
PY - 2009/4/1
Y1 - 2009/4/1
N2 - Chemical-potential dependence of pi and sigma meson masses is analyzed at both real and imaginary chemical potentials, μR and μI, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model that possesses both the extended Z3 symmetry and chiral symmetry. In the μI region, the meson masses have the Roberge-Weiss periodicity. The μI dependence of the meson masses becomes stronger as temperature increases. We argue that meson masses and physical quantities in the μR region will be determined from lattice QCD data on meson masses in the μI region by using the PNJL model, if the data are measured in the future.
AB - Chemical-potential dependence of pi and sigma meson masses is analyzed at both real and imaginary chemical potentials, μR and μI, by using the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model that possesses both the extended Z3 symmetry and chiral symmetry. In the μI region, the meson masses have the Roberge-Weiss periodicity. The μI dependence of the meson masses becomes stronger as temperature increases. We argue that meson masses and physical quantities in the μR region will be determined from lattice QCD data on meson masses in the μI region by using the PNJL model, if the data are measured in the future.
UR - http://www.scopus.com/inward/record.url?scp=66749147906&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=66749147906&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.79.076008
DO - 10.1103/PhysRevD.79.076008
M3 - Article
VL - 79
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 7
M1 - 076008
ER -