For a chiral parabolic band, the polaron self-energy and pair propagator are claimed to depart strongly from the nonchiral case at low momentum, producing instabilities that disappear at large momentum.
Electronic properties and polaronic dynamics of semi-Dirac system within ladder approximation
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abstract
We investigate the electronic properties of the semi-Dirac system and its polaronic dynamics when coupled with a fermi bath with quadratic dispersion. The electronic anisotropic transport properties and the semiclassical dynamics of the semi-Dirac system are studied, including the density-of-states, conductivity, transport relaxation rate, specific heat, electrical current denity, and free energy. The attractive polaron formed as the semi-Dirac impurity dressed with the particle-hole excitations in a two-dimensional system are studied both analytically and numerically. The pair propagator, self-energy, spectral function are being detailly calculated and discussed.
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cond-mat.quant-gas 1years
2019 1verdicts
REJECT 1representative citing papers
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Attractive polaron formed in doped nonchiral/chiral parabolic system within ladder approximation
For a chiral parabolic band, the polaron self-energy and pair propagator are claimed to depart strongly from the nonchiral case at low momentum, producing instabilities that disappear at large momentum.