Origins and understanding hamiltonians for free fermions

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2 months ago

@StackPhysics

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My professor led me know that the hamiltonian for free fermions without mass in a lattice with $N$ sites is $$ H = -\sum_{i=1}^{N-1} c_i^\dagger c_{i+1} + \text{h.c.}\ , $$ with $c_i^\dagger$ and $c_i$ the creation and anhilation ...Read More

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