Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons
Abstract We employ the functional renormalization group flow equations to investigate the phase structure of the two-flavor quark-meson model in the presence of a finite isospin chemical potential, incorporating interactions with omega and rho vector mesons. For comparison, we also compute the phase...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-07-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14493-3 |
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| author | Mohammed Osman Defu Hou Wentao Wang Hui Zhang |
| author_facet | Mohammed Osman Defu Hou Wentao Wang Hui Zhang |
| author_sort | Mohammed Osman |
| collection | DOAJ |
| description | Abstract We employ the functional renormalization group flow equations to investigate the phase structure of the two-flavor quark-meson model in the presence of a finite isospin chemical potential, incorporating interactions with omega and rho vector mesons. For comparison, we also compute the phase diagram in the chiral limit using the mean-field approximation. Our findings demonstrate that omega and rho mesons affect the phase structure in markedly distinct ways, and the introduction of an isospin chemical potential leads to significant modifications in the phase boundaries and critical region. Increasing the isospin chemical potential lowers the tricritical points temperature, and tends to suppress the unphysical “back-bending” of the FRG phase boundary at low temperature. |
| format | Article |
| id | doaj-art-bc08d62f76c64e93b3cde75ed2a05729 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-bc08d62f76c64e93b3cde75ed2a057292025-08-20T04:03:01ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-07-0185711110.1140/epjc/s10052-025-14493-3Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesonsMohammed Osman0Defu Hou1Wentao Wang2Hui Zhang3Institute of Particle Physics (IOPP) and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal UniversityInstitute of Particle Physics (IOPP) and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal UniversityInstitute of Particle Physics (IOPP) and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal UniversityState Key Laboratory of Nuclear Physics and Technology, Institute of Quantum Matter, South China Normal UniversityAbstract We employ the functional renormalization group flow equations to investigate the phase structure of the two-flavor quark-meson model in the presence of a finite isospin chemical potential, incorporating interactions with omega and rho vector mesons. For comparison, we also compute the phase diagram in the chiral limit using the mean-field approximation. Our findings demonstrate that omega and rho mesons affect the phase structure in markedly distinct ways, and the introduction of an isospin chemical potential leads to significant modifications in the phase boundaries and critical region. Increasing the isospin chemical potential lowers the tricritical points temperature, and tends to suppress the unphysical “back-bending” of the FRG phase boundary at low temperature.https://doi.org/10.1140/epjc/s10052-025-14493-3 |
| spellingShingle | Mohammed Osman Defu Hou Wentao Wang Hui Zhang Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons European Physical Journal C: Particles and Fields |
| title | Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons |
| title_full | Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons |
| title_fullStr | Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons |
| title_full_unstemmed | Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons |
| title_short | Functional renormalization group study of the quark-meson model with $$\omega $$ ω and $$\rho $$ ρ vector mesons |
| title_sort | functional renormalization group study of the quark meson model with omega ω and rho ρ vector mesons |
| url | https://doi.org/10.1140/epjc/s10052-025-14493-3 |
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