পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| DMRG× | XANES× | |
|---|---|---|
| ক্ষেত্র | বর্ণালীবীক্ষণ | বর্ণালীবীক্ষণ |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | 1992 | 1975 |
| প্রবর্তক≠ | Steven White | Peter Lee |
| ধরন≠ | Computational method | Synchrotron technique |
| মৌলিক উৎস≠ | White, S. R. (1992). Density matrix formulation for quantum renormalization groups. Physical Review Letters, 69(19), 2863-2866. DOI ↗ | Lee, P. A., & Pendry, J. B. (1975). Theory of extended x-ray absorption fine structure. Physical Review B, 11(8), 2795-2811. DOI ↗ |
| অপর নাম≠ | DMRG, density matrix renormalization, tensor network | XANES spectroscopy, near-edge X-ray absorption |
| সম্পর্কিত | 3 | 3 |
| সারসংক্ষেপ≠ | Density Matrix Renormalization Group (DMRG) is a powerful computational method for solving strongly correlated quantum systems, particularly one-dimensional lattice models and quantum chemistry problems. Introduced by White in 1992, DMRG uses a variational approach and tensor-network representation to efficiently describe quantum ground states and excitations, achieving numerical accuracy competitive with exact diagonalization for systems that other methods cannot treat. | X-ray Absorption Near Edge Structure (XANES) is a synchrotron X-ray spectroscopy technique that measures the electronic and geometric structure around a specific atom by analyzing the X-ray absorption spectrum within about 50 eV of an absorption edge. Developed by Lee and Pendry in 1975, XANES is complementary to EXAFS and reveals valence state, local symmetry, and unoccupied orbital structure through near-threshold features and resonances. |
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