Dear developer of Kwant： I'm a freshman of Kwant. Recently, I want to calculate the conductance of Superconductor junction. Let me take the p+ip topological superconductor as the example. Its Hamiltonian is like with \sigma, \tau is the Pauli matrix for spin and particlehole. It have particlehole symmetry: to guarantee . ************************** My question is how to write down the K (complex conjugate) operator? Jinlong Zhang
Hi 张金龙, Thanks for posting to the mailing list.
Recently, I want to calculate the conductance of Superconductor junction.
Let me take the p+ip topological superconductor as the example. Its Hamiltonian is like with \sigma, \tau is the Pauli matrix for spin and particlehole.
It have particlehole symmetry: to g <http://www.baidu.com/link?url=CWxyHp8wHC7mUh2O8wfaytHhEs_rlRsVxh0fzoMQxTDVixB1fxTsjtNOfSY1CDp9ZBM2c7Xqe5qYxJQEquWYxqZEF3hL7Sjm9pEpQd58G>uarantee . ************************** My question is how to write down the K (complex conjugate) operator?
I am not sure what you mean by "write down". You cannot write it down as a matrix; it's defined by its action on wavefunctions. I'm not even sure that I understand your question. What are you actually trying to do? Perhaps reading the tutorial on superconductivity will help: https://kwantproject.org/doc/1/tutorial/superconductors. The example in that tutorial shows how to tell a Builder that your system has particlehole symmetry. Happy Kwanting, Joe
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Joseph Weston

张金龙