hi,
I'm just a beginner
i want to know how we can add a next-near-neighbor interaction in Model like Ising
i check the example but all of that is just for near-neighbor
a interaction like:
-1.0 * J * \sum_i sigmaz_{i} sigmaz_{i+2}
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
The example "05_Fermions_LongRange.py" covers a Hamiltonian with nearest and next-nearest neighbor interactions. You may use the same FiniteFunc term in Ising-like models.
Kind regards,
Daniel
👍
1
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
hi Daniel,
thank you for reply .
with the help of you i can Simulation my hamiltonian ,
I just have two other question :
1-when we want to calculate the entropy we divide system in two part (for example divide system size L to L/2 or any other 'l' that we want) but in this function "myObservables.AddObservable('BondEntropy', True)" how we determined the cuting number to dividing the system ?
2-how i can calculate "entanglement spectrum" with the myObservables.AddObservable() ??
Last edit: ali emam 2018-12-05
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
We support two measurements, once the entropy of the Schmidt values being measured by default. You can also write out the Schmidt values themselves, which is not a default. Here the entries in our documentation
Hi Danial ,
Open MPS dose have any documentation as .pdf that can help me?
for example i want to know how we can change the dimantion of dencity matrix but i could not found it in https://openmps.sourceforge.io
i always should ask you and waste your time and It makes me sick
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Please specify which density matrix you are asking about. If you think of the reduced density matrices generated by OSMPS, their dimensionality depends on the dimension of the local Hilbert space, i.e., the dimension of your operators passed to OSMPS, and the numer of sites, e.g., one or two-site reduced density matrices.
I tried to generate a pdf from our documentation as is, but it misses all the description of python functions, which are a useful part for the type of questions you have. You can use the search on the left of our html documentation if you did not already use it. A pdf will not contain more information than the html. But our papers can give you an impression of the inner working of OSMPS; see first number 5) and 16) as well 19) for exact diagonalization within OSMPS and 21) for open quantum systems based on the notation in 5) and 16).
hi,
I'm just a beginner
i want to know how we can add a next-near-neighbor interaction in Model like Ising
i check the example but all of that is just for near-neighbor
a interaction like:
-1.0 * J * \sum_i sigmaz_{i} sigmaz_{i+2}
Hello,
The example "05_Fermions_LongRange.py" covers a Hamiltonian with nearest and next-nearest neighbor interactions. You may use the same FiniteFunc term in Ising-like models.
Kind regards,
Daniel
hi Daniel,
thank you for reply .
with the help of you i can Simulation my hamiltonian ,
I just have two other question :
1-when we want to calculate the entropy we divide system in two part (for example divide system size L to L/2 or any other 'l' that we want) but in this function "myObservables.AddObservable('BondEntropy', True)" how we determined the cuting number to dividing the system ?
2-how i can calculate "entanglement spectrum" with the myObservables.AddObservable() ??
Last edit: ali emam 2018-12-05
Hello Ali,
We support two measurements, once the entropy of the Schmidt values being measured by default. You can also write out the Schmidt values themselves, which is not a default. Here the entries in our documentation
https://openmps.sourceforge.io/pyautodoc/obsterms.html?highlight=bondentropy#obsterms.BondEntropyObservable
https://openmps.sourceforge.io/pyautodoc/obsterms.html?highlight=obsterm%20py#obsterms.LambdaObservable
I hope that helps you to pursue your calculations.
Kind regards,
Daniel
Hi Danial ,
Open MPS dose have any documentation as .pdf that can help me?
for example i want to know how we can change the dimantion of dencity matrix but i could not found it in https://openmps.sourceforge.io
i always should ask you and waste your time and It makes me sick
Dear Ali,
Please specify which density matrix you are asking about. If you think of the reduced density matrices generated by OSMPS, their dimensionality depends on the dimension of the local Hilbert space, i.e., the dimension of your operators passed to OSMPS, and the numer of sites, e.g., one or two-site reduced density matrices.
I tried to generate a pdf from our documentation as is, but it misses all the description of python functions, which are a useful part for the type of questions you have. You can use the search on the left of our html documentation if you did not already use it. A pdf will not contain more information than the html. But our papers can give you an impression of the inner working of OSMPS; see first number 5) and 16) as well 19) for exact diagonalization within OSMPS and 21) for open quantum systems based on the notation in 5) and 16).
https://sourceforge.net/p/openmps/discussion/users/thread/4df017ff/
Best regards,
Daniel
Dear Daniel
i am so happy for answering my question.
i will read that paper you suggest i hope that are help me .
Best regard,
Ali
Dear Daniel
i am so happy for answering my question.
i will read that paper you suggest i hope that are help me .
Best regard,
Ali