2021-10-28T18:10:38Zhttps://tsukuba.repo.nii.ac.jp/oaioai:tsukuba.repo.nii.ac.jp:000169432021-03-01T17:57:05ZNumerical replica limit for the density correlation of the random Dirac fermion初貝, 安弘Ryu, ShinseiHatsugai, Yasuhiro©2001 The American Physical Societyapplication/pdfThe zero-mode wave function of a massless Dirac fermion in the presence of a random gauge field is studied. The density correlation function is calculated numerically, and found to exhibit a power law in the weak randomness with a disorder-dependent exponent. It deviates from the power law, and the disorder dependence becomes frozen in the strong randomness. A classical statistical system is employed through the replica trick to interpret the results, and the direct evaluation of the replica limit is demonstrated numerically. Analytical expressions of the correlation function and the free energy are also discussed with the replica symmetry breaking and the Liouville field theory.American Physical Society2001-05engjournal articlehttp://hdl.handle.net/2241/100847https://tsukuba.repo.nii.ac.jp/records/1694310.1103/PhysRevB.63.2333070163-1829AA00362255Physical review B6323233307https://tsukuba.repo.nii.ac.jp/record/16943/files/PRB_63-23.pdfapplication/pdf308.1 kB2013-12-19