2012/05/31 by Yunseok Seo, Sang-Jin Sin, Yang Zhou
Physics and Astronomy · #Black Holes and Theoretical Physics #Condensed matter physics #Cosmology and Gravitation Theories #Dispersion relation #Duality (order theory) #Excitation #Fermion #Gauge (firearms) #Materials science #Particle physics theoretical and experimental studies #Phase (matter) #Physics #Quantum electrodynamics #Quantum mechanics #Thermal #Thermodynamics #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2013.04.059
published as Phys.Lett. B723 (2013) 207-212 · 6 pages, 9 figures, v2:figure 2 replaced, one reference added, minor improvement, v3: one figure about density dependence of dispersion relations added, references added
arxiv created 2013/03/01 · openalex publication_date 2013/05/03 · arxiv updated 2013/05/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We consider the self-energy of strongly interacting fermions in the medium using gauge/gravity duality of D4/D8 system. We study the mass generation of the thermal and/or dense medium and the collective excitation called plasmino, by considering the spectral function of fermion and its dispersion relation. Our results are very different from those of the hard thermal loop method: for zero density, there is no thermal mass or plasmino in any phase. Plasmino in the deconfined phase is not allowed in D4/D8 setup. In the confined phase, there is a plasmino mode only for a window of density.