Holographic Studies of Strongly Coupled Systems at Large Density
- 발행기관 서강대학교 일반대학원
- 지도교수 이범훈
- 발행년도 2012
- 학위수여년월 2012. 2
- 학위명 석사
- 학과 및 전공 일반대학원 물리학과
- 실제URI http://www.dcollection.net/handler/sogang/000000047400
- 본문언어 영어
- 저작권 서강대학교 논문은 저작원 보호를 받습니다.
초록/요약
We use the holographic technique to study the response functions of dense, heavy fundamental matter coupled to SU(Nc) super Yang-Mills theory at finite temperature above the deconfinement phase transition but below the scale set by the baryon number density. By studying the current-current correlators of the baryon number density, we explored various properties, such as the AC conductivity, the quasi-particle spectrum and the Drude-limit parameters like the relaxation time. We employ a scaling behaviour in the dual geometry which depends in this limit only on the mass-squared to density ratio and obtain relatively simple temperature-independent closed-form expressions. We concentrated on the (2+1)-dimensional defect case, but in principle our results can also be generalized straightforwardly to other cases.
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