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Published on: March 30, 2017
Transport in Strongly Coupled Quark Matter
Carlos Hoyos1, Matti Järvinen2, Niko Jokela3
1Department of Physics and Instituto de Ciencias y Tecnologías Espaciales de Asturias (ICTEA) Universidad de Oviedo, c/ Federico Garciía Lorca 18, ES-33007 Oviedo, Spain.
We studied transport properties of dense quark matter relevant to neutron stars. Our findings using gauge/gravity duality differ from perturbation theory, suggesting caution for neutron star applications.
Area of Science:
- Nuclear Physics
- High-Energy Physics
- Astrophysics
Background:
- Deconfined quark matter may exist in neutron stars and their mergers.
- Transport phenomena are crucial for understanding these dense systems.
Purpose of the Study:
- To conduct the first systematic study of viscosities and conductivities of dense quark matter.
- To investigate these properties using the gauge/gravity duality framework.
Main Methods:
- Employed the V-QCD model, a holographic approach.
- Applied gauge/gravity duality to model dense quark matter.
Main Results:
- Obtained results for transport coefficients in qualitative disagreement with perturbation theory.
- Demonstrated differing transport properties between weak and strong coupling regimes.
Conclusions:
- Perturbative predictions may not accurately describe dense quark matter in neutron stars.
- Results highlight the importance of non-perturbative methods for astrophysical applications.
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