Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Sergei L. Lukyanov"'
Autor:
Ananda Roy, Sergei L. Lukyanov
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-6 (2023)
Abstract Confinement of topological excitations into particle-like states - typically associated with theories of elementary particles - are known to occur in condensed matter systems, arising as domain-wall confinement in quantum spin chains. Howeve
Externí odkaz:
https://doaj.org/article/20a2c80f3a24466baf7c4420fe67c589
Autor:
Gleb A. Kotousov, Sergei L. Lukyanov
Publikováno v:
Nuclear Physics B, Vol 993, Iss , Pp 116269- (2023)
The subject matter of this work is a 1D quantum spin-12 chain associated with the inhomogeneous six-vertex model possessing an additional Zr symmetry. The model is studied in a certain parametric domain, where it is critical. Within the ODE/IQFT appr
Externí odkaz:
https://doaj.org/article/84c946e42fec4864a04521d9d0d17d49
Autor:
Gleb A. Kotousov, Sergei L. Lukyanov
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-82 (2021)
Abstract An integrable system is introduced, which is a generalization of the sl $$ \mathfrak{sl} $$ (2) quantum affine Gaudin model. Among other things, the Hamiltonians are constructed and their spectrum is calculated using the ODE/IQFT approach. T
Externí odkaz:
https://doaj.org/article/fa49e402aa494ffe890f28d3d0594b95
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-47 (2021)
Abstract This work concerns the quantum Lorentzian and Euclidean black hole non-linear sigma models. For the Euclidean black hole sigma model an equilibrium density matrix is proposed, which reproduces the modular invariant partition function from th
Externí odkaz:
https://doaj.org/article/174f0dcbf57b4f708cb5b6d8ffa0046e
Autor:
Gleb A. Kotousov, Sergei L. Lukyanov
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 2, Pp 1-33 (2020)
Abstract The reflection operators are the simplest examples of the non-local integrals of motion, which appear in many interesting problems in integrable CFT. For the so- called Fateev, quantum AKNS, paperclip and KdV integrable structures, they are
Externí odkaz:
https://doaj.org/article/bd07cd9b07ba4f3bbf6df6abb68bf707
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-31 (2019)
Abstract In this note we report the results of our study of a 1D integrable spin chain whose critical behaviour is governed by a CFT possessing a continuous spectrum of scaling dimensions. It is argued that the computation of the density of Bethe sta
Externí odkaz:
https://doaj.org/article/e9e1d1a8a2f64a91ae606991bcb49d6e
Publikováno v:
Nuclear Physics B, Vol 965, Iss , Pp 115337- (2021)
The work contains a detailed study of the scaling limit of a certain critical, integrable inhomogeneous six-vertex model subject to twisted boundary conditions. It is based on a numerical analysis of the Bethe ansatz equations as well as the powerful
Externí odkaz:
https://doaj.org/article/b14d9462553541c49c8ad7d379932758
Publikováno v:
Nuclear Physics B, Vol 934, Iss , Pp 529-556 (2018)
A common approach to the quantization of integrable models starts with the formal substitution of the Yang–Baxter Poisson algebra with its quantum version. However it is difficult to discern the presence of such an algebra for the so-called non-ult
Externí odkaz:
https://doaj.org/article/3a641db8fd22450abdf0dae924453909
Publikováno v:
Nuclear Physics B, Vol 927, Iss , Pp 468-515 (2018)
The Bukhvostov–Lipatov model is an exactly soluble model of two interacting Dirac fermions in 1+1 dimensions. The model describes weakly interacting instantons and anti-instantons in the O(3) non-linear sigma model. In our previous work [arXiv:1607
Externí odkaz:
https://doaj.org/article/3578bedb6b014deba193609a415d7f6d
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 1, Pp 1-89 (2018)
Abstract In this work we revisit the problem of the quantization of the two-dimensional O(3) non-linear sigma model and its one-parameter integrable deformation — the sausage model. Our consideration is based on the so-called ODE/IQFT correspondenc
Externí odkaz:
https://doaj.org/article/aa7c92d40b784a818042c2d8ee22afa0