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Tagged with cpt-symmetry hamiltonian
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Are Hamiltonians CPT invariant?
I'm confused by the CPT theorem. It states (more or less) that a Lorentz invariant quantum field theory needs to be CPT invariant. But what does it actually mean for a QFT to be CPT invariant? It ...
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Non-Hermitian PT-symmetric Interacting Hamiltonian with Real Spectra
The following hamiltonian is $\mathcal{PT}$-symmetric $$\mathcal{H} = -J \sum_{j = 1}^{2N} [ 1 + (-1)^j \delta ] [ c^{\dagger}_{j} c_{j+1} + h.c. ] + \imath \gamma \sum_{j = 1}^{2N} (-1)^j c^{\dagger}...
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Difference between non-Hermitian and PT-symmetric systems [closed]
Can anyone explain me the difference between non-Hermitian and PT-symmetric systems (in terms of the Hamiltonian)? Are they two mutually exclusive things?
user274797
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Mathematical representation of Symmetry Transformation
Consider a general Hamiltonian that is made up of three terms
$\mathcal{H}$ = term I + term II + term III .
Suppose the combination of charge conjugation and parity (CP) is a symmetry of this ...
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Clarifying PT symmetry
I understand that if a Hamiltonian remains invariant under the following transformations then it is PT invariant,
\begin{eqnarray}
\mathrm{Parity \; reversal:} \; \; \hat{p} \to -\hat{p} \; \; \...
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