Soft Interactions in Cold Quark Matter
In: 127 ; Physical Review Letters ; 16, 2022
Online
academicJournal
Zugriff:
Accurate knowledge of the thermodynamic properties of zero-temperature, high-density quark matter plays an integral role in attempts to constrain the behavior of the dense QCD matter found inside neutron-star cores, irrespective of the phase realized inside the stars. In this Letter, we consider the weak-coupling expansion of the dense QCD equation of state and compute the next-to-next-to-next-to-leading-order contribution arising from the non-Abelian interactions among long-wavelength, dynamically screened gluonic fields. Accounting for these interactions requires an all-loop resummation, which can be performed using hard-thermal-loop (HTL) kinematic approximations. Concretely, we perform a full two-loop computation using the HTL effective theory, valid for the long-wavelength, or soft, modes. We find that the soft sector is well behaved within cold quark matter, contrary to the case encountered at high temperatures, and find that the new contribution decreases the renormalization-scale dependence of the equation of state at high density. ; publishedVersion
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Soft Interactions in Cold Quark Matter
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Autor/in / Beteiligte Person: | Gorda, Tyler ; Kurkela, Eero Aleksi ; Paatelainen, Risto ; Säppi, Saga ; Vuorinen, Aleksi |
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Zeitschrift: | 127 ; Physical Review Letters ; 16, 2022 |
Veröffentlichung: | American Physical Society, 2022 |
Medientyp: | academicJournal |
ISSN: | 0031-9007 (print) |
DOI: | 10.1103/PhysRevLett.127.162003 |
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