Non-perturbative determination of the QCD Equation of State up to the electroweak scale
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arXiv
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866917328190439424 |
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| author | Pepe, Michele |
| author_facet | Pepe, Michele |
| contents | The QCD Equation of State with $N_f=3$ massless quark flavours is determined non-perturbatively over a broad range of temperatures, extending from the electroweak scale down to 3 GeV, and smoothly connecting to the low-temperature regime. The comparison with perturbative predictions shows that, even at temperatures approaching the electroweak scale, the Equation of State can be accurately described only by adding terms beyond the known perturbative series, including non-perturbative contributions. The strategy that allows this investigation in the previously unexplored high-temperature regime combines shifted boundary conditions with a determination of the lines of constant physics based on the running of a non-perturbatively defined renormalized coupling. This methodology is general and can be applied to QCD with four or five massive quark flavours. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_09330 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Non-perturbative determination of the QCD Equation of State up to the electroweak scale Pepe, Michele High Energy Physics - Lattice Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology The QCD Equation of State with $N_f=3$ massless quark flavours is determined non-perturbatively over a broad range of temperatures, extending from the electroweak scale down to 3 GeV, and smoothly connecting to the low-temperature regime. The comparison with perturbative predictions shows that, even at temperatures approaching the electroweak scale, the Equation of State can be accurately described only by adding terms beyond the known perturbative series, including non-perturbative contributions. The strategy that allows this investigation in the previously unexplored high-temperature regime combines shifted boundary conditions with a determination of the lines of constant physics based on the running of a non-perturbatively defined renormalized coupling. This methodology is general and can be applied to QCD with four or five massive quark flavours. |
| title | Non-perturbative determination of the QCD Equation of State up to the electroweak scale |
| topic | High Energy Physics - Lattice Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2603.09330 |