The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets
A new approximate scheme, DSUBm, is described for the coupled cluster method. We apply it to two wellstudied (spin-1/2 Heisenberg antiferromagnet) spin-lattice models, namely: the XXZ and the XY models on the square lattice in two dimensions. Results are obtained in each case for the ground-state...
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| Дата: | 2009 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
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Інститут фізики конденсованих систем НАН України
2009
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120023 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets / R.F. Bishop, P.H.Y. Li, J. Schulenburg // Condensed Matter Physics. — 2009. — Т. 12, № 3. — С. 479-496. — Бібліогр.: 43 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1200232017-06-11T03:04:12Z The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets Bishop, R.F. Li, P.H.Y. Schulenburg, J. A new approximate scheme, DSUBm, is described for the coupled cluster method. We apply it to two wellstudied (spin-1/2 Heisenberg antiferromagnet) spin-lattice models, namely: the XXZ and the XY models on the square lattice in two dimensions. Results are obtained in each case for the ground-state energy, the sublattice magnetization and the quantum critical point. They are in good agreement with those from such alternative methods as spin-wave theory, series expansions, exact diagonalization techniques, quantum Monte Carlo methods and those from the CCM using the LSUBm scheme. Описана нова апроксимацiйна схема (DSUBm) у методi взаємодiючих кластерiв. Потiм ми застосовуємо її до двох добре вивчених (спiн-1/2 антиферомагнетикiв Гайзенберга) спiн-граткових моделей, а саме: XXZ i XY моделей на квадратнiй гратцi у двох вимiрах. Результати, отриманi у кожному iз випадкiв, стосуються енергiї основного стану, пiдграткової намагнiченостi i квантової критичної точки. Вони добре узгоджуються з вiдповiдними результатами альтернативних методiв, таких як теорiя спiнових хвиль, розклади в ряди, квантове Монте Карло i результатами, якi дає метод взаємодiючих кластерiв з використанням схеми LSUBm. 2009 Article The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets / R.F. Bishop, P.H.Y. Li, J. Schulenburg // Condensed Matter Physics. — 2009. — Т. 12, № 3. — С. 479-496. — Бібліогр.: 43 назв. — англ. 1607-324X PACS: 75.10.Jm, 75.30.Gw, 75.40.-s, 75.50.Ee DOI:10.5488/CMP.12.3.479 http://dspace.nbuv.gov.ua/handle/123456789/120023 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
A new approximate scheme, DSUBm, is described for the coupled cluster method. We apply it to two wellstudied
(spin-1/2 Heisenberg antiferromagnet) spin-lattice models, namely: the XXZ and the XY models
on the square lattice in two dimensions. Results are obtained in each case for the ground-state energy, the
sublattice magnetization and the quantum critical point. They are in good agreement with those from such alternative
methods as spin-wave theory, series expansions, exact diagonalization techniques, quantum Monte
Carlo methods and those from the CCM using the LSUBm scheme. |
| format |
Article |
| author |
Bishop, R.F. Li, P.H.Y. Schulenburg, J. |
| spellingShingle |
Bishop, R.F. Li, P.H.Y. Schulenburg, J. The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets Condensed Matter Physics |
| author_facet |
Bishop, R.F. Li, P.H.Y. Schulenburg, J. |
| author_sort |
Bishop, R.F. |
| title |
The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets |
| title_short |
The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets |
| title_full |
The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets |
| title_fullStr |
The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets |
| title_full_unstemmed |
The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets |
| title_sort |
dsubm approximation scheme for the coupled cluster method and applications to quantum magnets |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2009 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120023 |
| citation_txt |
The DSUBm approximation scheme for the coupled cluster method and applications to quantum magnets / R.F. Bishop, P.H.Y. Li, J. Schulenburg // Condensed Matter Physics. — 2009. — Т. 12, № 3. — С. 479-496. — Бібліогр.: 43 назв. — англ. |
| series |
Condensed Matter Physics |
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