A new approach to determine the thermodynamics of deconfined matter to high accuracy
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912705385857024 |
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| author | Gorda, Tyler Navarrete, Pablo Paatelainen, Risto Sandbote, Leon Seppänen, Kaapo |
| author_facet | Gorda, Tyler Navarrete, Pablo Paatelainen, Risto Sandbote, Leon Seppänen, Kaapo |
| contents | We demonstrate that at finite density and sufficiently high temperatures, phase-quenched (PQ) lattice simulations combined with perturbation theory provide a new precision approach to determining the thermodynamics of QCD across a wide arc of the phase diagram where the strong coupling constant $α_s$ remains small. In this regime, nonperturbative pairing effects in the PQ theory are parametrically suppressed, so that the difference between the PQ and full QCD pressures becomes a small perturbative correction. We compute this correction up to and including $O(α_s^{7/2})$ using electrostatic QCD together with a novel numerical method to compute four-loop sum-integrals. This enables the determination of the perturbative QCD pressure with precision beyond the current state of the art while including nonperturbative pure-gluonic contributions from the lattice. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_09627 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A new approach to determine the thermodynamics of deconfined matter to high accuracy Gorda, Tyler Navarrete, Pablo Paatelainen, Risto Sandbote, Leon Seppänen, Kaapo High Energy Physics - Phenomenology We demonstrate that at finite density and sufficiently high temperatures, phase-quenched (PQ) lattice simulations combined with perturbation theory provide a new precision approach to determining the thermodynamics of QCD across a wide arc of the phase diagram where the strong coupling constant $α_s$ remains small. In this regime, nonperturbative pairing effects in the PQ theory are parametrically suppressed, so that the difference between the PQ and full QCD pressures becomes a small perturbative correction. We compute this correction up to and including $O(α_s^{7/2})$ using electrostatic QCD together with a novel numerical method to compute four-loop sum-integrals. This enables the determination of the perturbative QCD pressure with precision beyond the current state of the art while including nonperturbative pure-gluonic contributions from the lattice. |
| title | A new approach to determine the thermodynamics of deconfined matter to high accuracy |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.09627 |