For the Kitaev-Hubbard chain, the finite-temperature decay rate of the Majorana edge mode follows an Arrhenius law with an effective gap systematically larger than the many-body gap.
With the DMRG we extracted the ground state of the Hamilto- nian for the even and odd parity sectors, together with the first excited states within each parity sector
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Almost Strong Zero Modes at Finite Temperature
For the Kitaev-Hubbard chain, the finite-temperature decay rate of the Majorana edge mode follows an Arrhenius law with an effective gap systematically larger than the many-body gap.