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http://hdl.handle.net/2445/126144
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DC Field | Value | Language |
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dc.contributor.author | Casalderrey Solana, Jorge | - |
dc.contributor.author | Grozdanov, Saso | - |
dc.contributor.author | Starinets, Andrei O. | - |
dc.date.accessioned | 2018-11-15T14:43:36Z | - |
dc.date.available | 2018-11-15T14:43:36Z | - |
dc.date.issued | 2018-11-09 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/126144 | - |
dc.description.abstract | We study the structure of thermal spectral function of the stress-energy tensor in N=4 supersymmetric Yang-Mills theory at intermediate 't Hooft coupling and infinite number of colors. In gauge-string duality, this analysis reduces to the study of classical bulk supergravity with higher-derivative corrections, which correspond to (inverse) coupling corrections on the gauge theory side. We extrapolate the analysis of perturbative leading-order corrections to intermediate coupling by nonperturbatively solving the equations of motion of metric fluctuations dual to the stress-energy tensor at zero spatial momentum. We observe the emergence of a separation of scales in the analytic structure of the thermal correlator associated with two types of characteristic relaxation modes. As a consequence of this separation, the associated spectral function exhibits a narrow structure in the small frequency region which controls the dynamics of transport in the theory and may be described as a transport peak typically found in perturbative, weakly interacting thermal field theories. We compare our results with generic expectations drawn from perturbation theory, where such a structure emerges as a consequence of the existence of quasiparticles. | - |
dc.format.extent | 6 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.121.191603 | - |
dc.relation.ispartof | Physical Review Letters, 2018, vol. 121, p. 191603 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.121.191603 | - |
dc.rights | (c) American Physical Society, 2018 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Pertorbació (Dinàmica quàntica) | - |
dc.subject.classification | Teoria quàntica de camps | - |
dc.subject.classification | Supergravetat | - |
dc.subject.other | Perturbation (Quantum dynamics) | - |
dc.subject.other | Quantum field theory | - |
dc.subject.other | Supergravity | - |
dc.title | Transport peak in thermal spectral function of N=4 supersymmetric Yang-Mills plasma at intermediate coupling | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 683039 | - |
dc.date.updated | 2018-11-15T14:43:36Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.identifier.pmid | 30468611 | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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683039.pdf | 350.65 kB | Adobe PDF | View/Open |
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