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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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