469 citations · 4.3k across the 65 of their papers we have counts for
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Dimer correlation amplitudes and dimer excitation gap in spin-1/2 XXZ and Heisenberg chains
Toshiya Hikihara, Akira Furusaki, Sergei Lukyanov
Correlation functions of dimer operators, the product operators of spins on two adjacent sites, are studied in the spin- XXZ chain in the critical regime. The amplitud…
Fidelities in the spin-boson model
Sergei L. Lukyanov
The spin-boson model (or the dissipative two-state system) is a model for the study of dissipation and decoherence in quantum mechanics. The spin-boson model with Ohmic dissipation…
Exact overlaps in the Kondo problem
Sergei L. Lukyanov, Hubert Saleur, Jesper L. Jacobsen +1
It is well known that the ground states of a Fermi liquid with and without a single Kondo impurity have an overlap which decays as a power law of the system size, expressing the An…
Analytical results for the Coqblin-Schrieffer model with generalized magnetic fields
V. V. Bazhanov, S. L. Lukyanov, A. M. Tsvelik
Using the approach alternative to the traditional Thermodynamic Bethe Ansatz, we derive analytical expressions for the free energy of Coqblin-Schrieffer model with arbitrary magnet…