Self-energy of strongly interacting fermions in medium: A holographic approach
- Title
- Self-energy of strongly interacting fermions in medium: A holographic approach
- Author
- 서윤석
- Keywords
- QUARK-GLUON PLASMA; HOT GAUGE-THEORIES; DAMPING RATE; FINITE-TEMPERATURE; QUASI-PARTICLES; QCD; PHASE
- Issue Date
- 2013-05
- Publisher
- Elsevier Science LTD
- Citation
- Physics Letters B, Volume 723, Issues 1?3, Pages 207-212
- Abstract
- 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 deconfined phase is not allowed in $D4/D8$ set up. In the confined phase, there is plasmino modes only for a window of density.Comment: 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
- URI
- https://www.sciencedirect.com/science/article/pii/S0370269313003481?via%3Dihub
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2013.04.059
- Appears in Collections:
- RESEARCH INSTITUTE[S](부설연구소) > THE RESEARCH INSTITUTE FOR NATURAL SCIENCES(자연과학연구소) > Articles
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