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t-J model using HPhi? #192
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I was wondering if it is possible to simulate the t-J model using HPhi (without approximating by a large U in the Hubbard model). If this is implemented anywhere, I would appreciate if you can point me to the resource. Thanks.
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The t-J model can be calculated by compiling the tJ branch code, which is currently under development. By specifying CalcModel 9 in calcmold.def, calculations for the t-J model with particle conservation and total Sz conservation can be performed. Additional options include:
CalcModel 10: Grand canonical t-J model
(削除) CalcModel 11: t-J model without Sz conservation (削除ここまで)
However, we found that the condition for excluding doublons does not work correctly for odd sites.
This issue is planned to be fixed later.
We confirmed that we can correctly calculate the t-J model with even sites.
Replies: 2 comments
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The t-J model can be calculated by compiling the tJ branch code, which is currently under development. By specifying CalcModel 9 in calcmold.def, calculations for the t-J model with particle conservation and total Sz conservation can be performed. Additional options include:
CalcModel 10: Grand canonical t-J model
(削除) CalcModel 11: t-J model without Sz conservation (削除ここまで)
However, we found that the condition for excluding doublons does not work correctly for odd sites.
This issue is planned to be fixed later.
We confirmed that we can correctly calculate the t-J model with even sites.
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Sorry for the mistake in my earlier comment. To treat the spin–non-conserving case in the tJ model, please keep CalcModel in calmod.def set to 9 (= tJ) and remove 2Sz from modpara.def.
This is the same procedure as for the Hubbard model when handling the non-conserving Sz case.
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