Spin-1/2 XX chains with modulated gamma interaction
We study the spin-1/2 XX chain with a modulated Gamma interaction (GI), which results from the superposition of uniform and staggered Gamma terms. We diagonalize the Hamiltonian of the model exactly using the Fermionization technique. We then probe the energy gap and identify the gapped and gapless...
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| Format: | Article |
| Language: | English |
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SciPost
2025-01-01
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| Series: | SciPost Physics Core |
| Online Access: | https://scipost.org/SciPostPhysCore.8.1.001 |
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| author | M. Abbasi, S. Mahdavifar, M. Motamedifar |
| author_facet | M. Abbasi, S. Mahdavifar, M. Motamedifar |
| author_sort | M. Abbasi, S. Mahdavifar, M. Motamedifar |
| collection | DOAJ |
| description | We study the spin-1/2 XX chain with a modulated Gamma interaction (GI), which results from the superposition of uniform and staggered Gamma terms. We diagonalize the Hamiltonian of the model exactly using the Fermionization technique. We then probe the energy gap and identify the gapped and gapless regions. We also examine the staggered chiral, staggered nematic and dimer order parameters to determine the different phases of the ground state phase diagram with their respective long-range orders. Our findings indicate that the model undergoes first-order, second-order, gapless-gapless, and gapped-gapped phase transitions. |
| format | Article |
| id | doaj-art-beb81b31ae5847f7844b67afccbff140 |
| institution | Kabale University |
| issn | 2666-9366 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics Core |
| spelling | doaj-art-beb81b31ae5847f7844b67afccbff1402025-01-07T11:42:32ZengSciPostSciPost Physics Core2666-93662025-01-018100110.21468/SciPostPhysCore.8.1.001Spin-1/2 XX chains with modulated gamma interactionM. Abbasi, S. Mahdavifar, M. MotamedifarWe study the spin-1/2 XX chain with a modulated Gamma interaction (GI), which results from the superposition of uniform and staggered Gamma terms. We diagonalize the Hamiltonian of the model exactly using the Fermionization technique. We then probe the energy gap and identify the gapped and gapless regions. We also examine the staggered chiral, staggered nematic and dimer order parameters to determine the different phases of the ground state phase diagram with their respective long-range orders. Our findings indicate that the model undergoes first-order, second-order, gapless-gapless, and gapped-gapped phase transitions.https://scipost.org/SciPostPhysCore.8.1.001 |
| spellingShingle | M. Abbasi, S. Mahdavifar, M. Motamedifar Spin-1/2 XX chains with modulated gamma interaction SciPost Physics Core |
| title | Spin-1/2 XX chains with modulated gamma interaction |
| title_full | Spin-1/2 XX chains with modulated gamma interaction |
| title_fullStr | Spin-1/2 XX chains with modulated gamma interaction |
| title_full_unstemmed | Spin-1/2 XX chains with modulated gamma interaction |
| title_short | Spin-1/2 XX chains with modulated gamma interaction |
| title_sort | spin 1 2 xx chains with modulated gamma interaction |
| url | https://scipost.org/SciPostPhysCore.8.1.001 |
| work_keys_str_mv | AT mabbasismahdavifarmmotamedifar spin12xxchainswithmodulatedgammainteraction |