Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2410.05691 |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866910640914825216 |
|---|---|
| author | Zhang, Le Cai, Fei-Yang Chen, Xun |
| author_facet | Zhang, Le Cai, Fei-Yang Chen, Xun |
| contents | Using gauge/gravity duality, we study the exotic hybrid pseudopotentials at finite temperature and chemical potential. The $Σ$ hybrid meson can be described by a model including an object called ``defect'' on a string linking the quark and antiquark. It was first proposed by Andreev and perfectly described the $Σ_u^-$ hybrid potential at zero temperature and chemical potential. In this paper, we would like to extend this model to finite chemical potential and compare the separate distance and pseudopotentials of $Σ_g^+ $ and $Σ_u^-$. Unlike $Σ_g^+$ ground state, the $Σ_u^-$ hybrid pseudopotentials no longer behave as Coulomb-like at short distances. In addition, temperature and chemical potential have a significant impact on the $Σ_u^-$ hybrid pseudopotentials. The screen distances and hybrid pseudopotentials of $Σ_u^-$ significantly decrease with the increase of temperature and chemical potential. At last, we draw the melting diagram of $Σ_g^+ $ and $Σ_u^-$ in the $T- μ$ plane, and confirm that the quark-antiquark pair in $Σ_u^-$ excited state is easier to melt than in $Σ_g^+$ ground state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_05691 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exotic hybrid pseudopotentials at finite temperature and chemical potential Zhang, Le Cai, Fei-Yang Chen, Xun High Energy Physics - Phenomenology Using gauge/gravity duality, we study the exotic hybrid pseudopotentials at finite temperature and chemical potential. The $Σ$ hybrid meson can be described by a model including an object called ``defect'' on a string linking the quark and antiquark. It was first proposed by Andreev and perfectly described the $Σ_u^-$ hybrid potential at zero temperature and chemical potential. In this paper, we would like to extend this model to finite chemical potential and compare the separate distance and pseudopotentials of $Σ_g^+ $ and $Σ_u^-$. Unlike $Σ_g^+$ ground state, the $Σ_u^-$ hybrid pseudopotentials no longer behave as Coulomb-like at short distances. In addition, temperature and chemical potential have a significant impact on the $Σ_u^-$ hybrid pseudopotentials. The screen distances and hybrid pseudopotentials of $Σ_u^-$ significantly decrease with the increase of temperature and chemical potential. At last, we draw the melting diagram of $Σ_g^+ $ and $Σ_u^-$ in the $T- μ$ plane, and confirm that the quark-antiquark pair in $Σ_u^-$ excited state is easier to melt than in $Σ_g^+$ ground state. |
| title | Exotic hybrid pseudopotentials at finite temperature and chemical potential |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.05691 |