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arXiv 0812.3273hep-th
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2+1维系统引力对偶中的化学势

Chemical Potential in the Gravity Dual of a 2+1 Dimensional System

Nick Evans, Ed Threlfall

摘要:

我们研究了在D3膜AdS_5和AdS_5-Schwarzschild背景中的探测D5膜作为强耦合2+1维准粒子的原型对偶描述。我们通过U(1)R对称群引入化学势,在多味情况下引入U(1)重子数和同位旋U(1)。我们在每种情况下都找到了合适的D5嵌入--这种嵌入并没有表现出超导体所需要的自发对称性破缺。同位旋化学势确实引起带电介子态的凝聚。

英文摘要:

We study probe D5 branes in D3 brane AdS_5 and AdS_5-Schwarzschild backgrounds as a prototype dual description of strongly coupled 2+1 dimensional quasi-particles. We introduce a chemical potential through the U(1)_R symmetry group, U(1) baryon number and a U(1) of isospin in the multi-flavour case. We find the appropriate D5 embeddings in each case - the embeddings do not exhibit the spontaneous symmetry breaking that would be needed for a superconductor. The isospin chemical potential does induce the condensation of charged meson states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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