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Results tagged with condensed-matter
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user 403025
The study of physical properties of condensed phases of matter, including solids and liquids.
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Why is the excitation energy of antiferro 1/2 spin XXZ chain associated with the $\psi_{n+2}...
I do not understand the equation on page 5 of nagaoso's book "quantum field theory in strongly correlated electronic systems".
The Hamiltonian is shown in this form
$H=\frac{J_\bot}{2}\sum_{i}(S_i^+S_ …
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