Effective Field Theories for heavy probes in a hot QCD plasma and in the early universe
Escobedo Espinosa, M. (2017). Effective Field Theories for heavy probes in a hot QCD plasma and in the early universe. In Y. Foka, N. Brambilla, & V. Kovalenko (Eds.), XIIth Quark Confinement and the Hadron Spectrum - Proceedings (Article 01008). EDP Sciences. EPJ Web of Conferences, 137. https://doi.org/10.1051/epjconf/201713701008
Julkaistu sarjassa
EPJ Web of ConferencesTekijät
Päivämäärä
2017Tekijänoikeudet
© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative
Commons Attribution License 4.0.
There are many interesting problems in heavy-ion collisions and in cosmology that involve the interaction of a heavy particle with a medium. An example is the dissociation of heavy quarkonium seen in heavy-ion collisions. This was believed to be due to the screening of chromoelectric fields that prevents the heavy quarks from binding, however in the last years several perturbative and lattice computations have pointed out to the possibility that dissociation is due to the finite lifetime of a quarkonium state inside the medium. Regarding cosmology, the study of the behavior of heavy Majorana neutrinos in a hot medium is important to understand if this model can explain the origin of dark matter and the baryon asymmetry. A very convenient way of studying these problems is with the use of non-relativistic effective field theories (EFTs), this allows to make the computations in a more systematic way by defining a more suitable power counting and making it more difficult to miss necessary resummations. In this proceedings I will review the most important results obtained by applying the EFT formalism to the study of quarkonium suppression and Majorana neutrinos, I will also discuss how combining an EFT called potential non-relativistic QCD (pNRQCD) with concepts coming from the field of open quantum systems it is possible to understand how the population of the different quarkonium states evolve with time inside a thermal medium.
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Julkaisija
EDP SciencesKonferenssi
Quark Confinement and the Hadron SpectrumKuuluu julkaisuun
XIIth Quark Confinement and the Hadron Spectrum - ProceedingsISSN Hae Julkaisufoorumista
2101-6275Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/26970372
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During the preparation of this talk and the proceedings I have been supported by the European Research Council under the Advanced Investigator Grant ERC-AD-267258 and by the Academy of Finland, project 303756.Lisenssi
Ellei muuten mainita, aineiston lisenssi on © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative
Commons Attribution License 4.0.
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