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Density-density propagator for one-dimensional interacting spinless fermions with non-linear dispersion and calculation of the Coulomb drag resistivity
A. V. Rozhkov
Using bosonization-fermionization transformation we map the Tomonaga-Luttinger model of spinless fermions with non-linear dispersion on the model of fermionic quasiparticles whose…
Class of exactly soluble models of one-dimensional spinless fermions and its application to the Tomonaga-Luttinger Hamiltonian with nonlinear dispersion
A. V. Rozhkov
It is shown that for some special values of Hamiltonian parameters the Tomonaga-Luttinger model with nonlinear dispersion is unitary equivalent to the system of noninteracting ferm…
Fermionic Quasiparticle Representation of Tomonaga-Luttinger Hamiltonian
A. V. Rozhkov
We find a unitary operator which asymptotically diagonalizes the Tomonaga-Luttinger hamiltonian of one-dimensional spinless electrons. The operator performs a Bogoliubov rotation i…
Thermal transport in antiferromagnetic spin-chain materials
A. L. Chernyshev, A. V. Rozhkov
We study the problem of heat transport in one-dimensional (1D) spin-chain systems weakly coupled to three-dimensional phonons and impurities. We consider the limit of fast spin exc…
Thermal conductivity of quasi-one-dimensional antiferromagnetic spin-chain materials
A. V. Rozhkov, A. L. Chernyshev
We study heat transport in quasi-one-dimensional spin-chain systems by considering the model of one-dimensional bosonic spin excitations interacting with three-dimensional phonons…
Higher order effective low-energy theories
A. L. Chernyshev, Dimitrios Galanakis, Philip Phillips +2
Three well-known perturbative approaches to deriving low-energy effective theories, the degenerate Brillouin-Wigner perturbation theory (projection method), the canonical transform…