Aspects of the chiral crossover transition in (2+1)-flavor QCD with Möbius domain-wall fermions
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
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2024
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| author | Gavai, Rajiv V. Jaensch, Mischa E. Kaczmarek, Olaf Karsch, Frithjof Sarkar, Mugdha Shanker, Ravi Sharma, Sayantan Sharma, Sipaz Ueding, Tristan |
| author_facet | Gavai, Rajiv V. Jaensch, Mischa E. Kaczmarek, Olaf Karsch, Frithjof Sarkar, Mugdha Shanker, Ravi Sharma, Sayantan Sharma, Sipaz Ueding, Tristan |
| contents | The non-singlet part of the chiral symmetry in QCD with two light flavors is known to be restored through a crossover transition at a pseudo-critical temperature. However, the temperature dependence of the singlet part of the chiral symmetry and whether it is effectively restored at the same temperature is not well understood. Using (2+1)-flavor QCD configurations generated using the Möbius domain-wall discretization on an $N_τ=8$ lattice, we construct suitable observables where the singlet and non-singlet chiral symmetries are disentangled in order to study their temperature dependence across the crossover transition. From the peak of the disconnected part of the chiral susceptibility, we obtain a pseudo-critical temperature $T_{pc}=158.7{}_{{}-2.3}^{{}+2.6}$ MeV where the non-singlet part of the chiral symmetry is effectively restored. From a calculation of the topological susceptibility and its temperature dependence we find that the singlet $U_A(1)$ part of the chiral symmetry is not effectively restored at $T<186$ MeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_10217 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Aspects of the chiral crossover transition in (2+1)-flavor QCD with Möbius domain-wall fermions Gavai, Rajiv V. Jaensch, Mischa E. Kaczmarek, Olaf Karsch, Frithjof Sarkar, Mugdha Shanker, Ravi Sharma, Sayantan Sharma, Sipaz Ueding, Tristan High Energy Physics - Lattice High Energy Physics - Phenomenology The non-singlet part of the chiral symmetry in QCD with two light flavors is known to be restored through a crossover transition at a pseudo-critical temperature. However, the temperature dependence of the singlet part of the chiral symmetry and whether it is effectively restored at the same temperature is not well understood. Using (2+1)-flavor QCD configurations generated using the Möbius domain-wall discretization on an $N_τ=8$ lattice, we construct suitable observables where the singlet and non-singlet chiral symmetries are disentangled in order to study their temperature dependence across the crossover transition. From the peak of the disconnected part of the chiral susceptibility, we obtain a pseudo-critical temperature $T_{pc}=158.7{}_{{}-2.3}^{{}+2.6}$ MeV where the non-singlet part of the chiral symmetry is effectively restored. From a calculation of the topological susceptibility and its temperature dependence we find that the singlet $U_A(1)$ part of the chiral symmetry is not effectively restored at $T<186$ MeV. |
| title | Aspects of the chiral crossover transition in (2+1)-flavor QCD with Möbius domain-wall fermions |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.10217 |