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| Format: | Preprint |
| Published: |
2026
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| Online Access: | https://arxiv.org/abs/2603.15429 |
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| _version_ | 1866914398443929600 |
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| author | Aguirre, R. M. |
| author_facet | Aguirre, R. M. |
| contents | The first order chiral phase transition for quark matter with flavor imbalance is studied using the Linear sigma model with quarks, also known as Quark-meson model. Special attention is paid to the role of the scalar isovector meson. The general consensus presently is that the chiral transition changes from a smooth crossover to first-order at low temperatures. This transition is assumed to be discontinuous, with unstable or metastable intermediate states. However, if multiple charges are simultaneously conserved the system could undergo a continuous change through a coexistence of equilibrium states. Under such assumption the bulk properties are analyzed and several remarkable effects for the speed of sound and the susceptibilities are stressed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_15429 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Effects of equilibrium coexisting phases in the first-order chiral transition within the Linear sigma model with quarks Aguirre, R. M. High Energy Physics - Phenomenology The first order chiral phase transition for quark matter with flavor imbalance is studied using the Linear sigma model with quarks, also known as Quark-meson model. Special attention is paid to the role of the scalar isovector meson. The general consensus presently is that the chiral transition changes from a smooth crossover to first-order at low temperatures. This transition is assumed to be discontinuous, with unstable or metastable intermediate states. However, if multiple charges are simultaneously conserved the system could undergo a continuous change through a coexistence of equilibrium states. Under such assumption the bulk properties are analyzed and several remarkable effects for the speed of sound and the susceptibilities are stressed. |
| title | Effects of equilibrium coexisting phases in the first-order chiral transition within the Linear sigma model with quarks |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2603.15429 |