Flux tubes in QCD at finite temperature
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
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| _version_ | 1866918153191161856 |
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| author | Baker, Marshall Cea, Paolo Chelnokov, Volodymyr Cosmai, Leonardo Papa, Alessandro |
| author_facet | Baker, Marshall Cea, Paolo Chelnokov, Volodymyr Cosmai, Leonardo Papa, Alessandro |
| contents | We present results for the chromo-electric field generated by a static quark-antiquark pair at finite temperature, in lattice QCD with 2+1 dynamical staggered fermions at physical quark masses. We investigate the evolution of the field as the temperature increases through and beyond the chiral transition. For all the temperatures considered we find clear evidence of a chromo-magnetic current and of a longitudinal nonperturbative chromo-electric field that stays almost uniform along the flux tube. In the high-temperature region the magnitude of the flux-tube field is determined by an effective string tension that decreases exponentially as the temperature increases, while the flux-tube width decreases according to an inverse-temperature law. Our results suggest that beyond the chiral pseudocritical temperature the quark-antiquark system can be characterized by a screened string tension. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_02177 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Flux tubes in QCD at finite temperature Baker, Marshall Cea, Paolo Chelnokov, Volodymyr Cosmai, Leonardo Papa, Alessandro High Energy Physics - Lattice We present results for the chromo-electric field generated by a static quark-antiquark pair at finite temperature, in lattice QCD with 2+1 dynamical staggered fermions at physical quark masses. We investigate the evolution of the field as the temperature increases through and beyond the chiral transition. For all the temperatures considered we find clear evidence of a chromo-magnetic current and of a longitudinal nonperturbative chromo-electric field that stays almost uniform along the flux tube. In the high-temperature region the magnitude of the flux-tube field is determined by an effective string tension that decreases exponentially as the temperature increases, while the flux-tube width decreases according to an inverse-temperature law. Our results suggest that beyond the chiral pseudocritical temperature the quark-antiquark system can be characterized by a screened string tension. |
| title | Flux tubes in QCD at finite temperature |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2510.02177 |