| dc.contributor | 應物所 | |
| dc.creator (作者) | 林瑜琤 | zh_TW |
| dc.date (日期) | 2016 | |
| dc.date.accessioned | 18-May-2017 09:51:45 (UTC+8) | - |
| dc.date.available | 18-May-2017 09:51:45 (UTC+8) | - |
| dc.date.issued (上傳時間) | 18-May-2017 09:51:45 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/109768 | - |
| dc.description.abstract (摘要) | 在多自旋耦合極強極限下，均質J-Q鏈的基態將自發轉變成一價鍵固態。我們設計一針對J-Q鏈的強無序重整化群法(SDRG)用以探討耦合無序對自發性價鍵固態的影響。我們的結果顯示無序價鍵固態裂成交錯的二聚區間，成無晶形的價鍵固態，激發旋子位於疇壁。這無晶形價鍵固態與無序海森堡鏈的基態同為所謂的無序單態相態。 | |
| dc.description.abstract (摘要) | The ground state of a J-Q chain in the absence of disorder and in the limit of strong multi-spin (Q) couplings is a valence-bond solid (VBS) with spontaneous dimerization. We introduce a strong-disorder renormalization group (SDRG) scheme to study the effect of quenched bond randomness on J-Q chains. Our results show that the random VBS state breaks into alternating dimerized domains with singlets formed between spinons localized at domain walls. This amorphous valence-bond solid at long distances is asymptotically a random-singlet state, similar to the ground state of the random Heisenberg chain. | |
| dc.format.extent | 5247507 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.relation (關聯) | MOST 104-2112-M-004-002 | |
| dc.subject (關鍵詞) | 無序系統; 無序單態基態; 關聯函數; 玻璃態 | |
| dc.subject (關鍵詞) | disordered systems; random-singlet ground state; correlation functions; glassy phase | |
| dc.title (題名) | 無序關聯性系統的大規模計算模擬 | zh_TW |
| dc.type (資料類型) | report | |
