Ananga Mohan Datta

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Questions related from Ananga Mohan Datta

What is the physical meaning of change in expectation value of number operator with time in a system with anti-symmetric hopping?

In a non-Hermitian system, the expectation value of any operator changes with time. This happens for the number operator also. When an onsite complex potential is introduced in a system, that...

18 January 2021 7,130 5 View

How we can find ground state of a non-Hermitian system?

In the case of the Hermitian system, there are only real eigenvalues. We find the ground state by finding the minimum eigenvalue of the Hermitian matrix. However, for a non-Hermitian case, we get...

03 January 2021 8,493 3 View