Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Popkov, Vladislav"'
We find that the non-equilibrium steady state (NESS) of integrable spin chains undergoing boundary dissipation, can be described in terms of quasiparticles, with renormalized -- dissipatively dressed -- dispersion relation. The spectrum of the NESS i
Externí odkaz:
http://arxiv.org/abs/2408.09302
Publikováno v:
Physical Review B 109, 115411 (2024)
A chiral coordinate Bethe ansatz method is developed to study the periodic XYZ chain. We construct a set of chiral vectors with fixed number of kinks. All vectors are factorized and have simple structures. Under roots of unity conditions, the Hilbert
Externí odkaz:
http://arxiv.org/abs/2312.00161
Publikováno v:
Physical Review B 107, 235408 (2023)
We describe dynamics of transverse spin-helix state (SHS) -- a product state with spatially rotating magnetization -- under anisotropic Heisenberg XXZ spin chain evolution. Due to experimental relevance we especially focus on magnetization dynamics.
Externí odkaz:
http://arxiv.org/abs/2303.16632
Publikováno v:
Phys. Rev. Lett. 132 (2024) 220404
We propose a qubit basis composed of transverse spin helices with kinks. Unlike the usual computational basis, this chiral basis is well suited for describing quantum states with nontrivial topology. Choosing appropriate parameters the operators of t
Externí odkaz:
http://arxiv.org/abs/2303.14056
Autor:
Popkov, Vladislav, Salerno, Mario
Publikováno v:
EPL, 140 (2022) 11004
A dissipative method that allows to access family of phantom Bethe-states (PBS) of boundary driven XXZ spin chains, is introduced. The method consists in coupling the ends of the open spin chain to suitable dissipative magnetic baths to force the edg
Externí odkaz:
http://arxiv.org/abs/2206.06771
Publikováno v:
Phys. Rev. B 106, 075406 (2022)
We derive a criterion under which splitting of all eigenstates of an open $\XYZ$ Hamiltonian with boundary fields into two invariant subspaces, spanned by chiral shock states, occurs. The splitting is governed by an integer number, which has the geom
Externí odkaz:
http://arxiv.org/abs/2204.05732
We construct an explicit matrix product ansatz for the steady state of a boundary driven $XY\!Z$ spin-$\tfrac{1}{2}$ chain for arbitrary local polarizing channels at the chain's ends. The ansatz, where the Lax operators are written explicitly in term
Externí odkaz:
http://arxiv.org/abs/2112.05616
Publikováno v:
Phys Rev B 104, 195409 (2021)
We construct the coordinate Bethe ansatz for all eigenstates of the open spin-$\frac12$ XXZ chain that fulfill the phantom roots criterion (PRC). Under the PRC, the Hilbert space splits into two invariant subspaces and there are two sets of homogeneo
Externí odkaz:
http://arxiv.org/abs/2107.13266
Publikováno v:
Phys. Rev. B 103, 115435 (2021)
We investigate special solutions to the Bethe Ansatz equations (BAE) for open integrable $XXZ$ Heisenberg spin chains containing phantom (infinite) Bethe roots. The phantom Bethe roots do not contribute to the energy of the Bethe state, so the energy
Externí odkaz:
http://arxiv.org/abs/2102.03299
Publikováno v:
Phys. Rev. B 104, L081410 (2021)
We demonstrate the existence of special phantom excitations for open and periodically closed integrable systems at the example of the $XXZ$ Heisenberg spin chain. The phantom excitations do not contribute to the energy of the Bethe state and correspo
Externí odkaz:
http://arxiv.org/abs/2102.03295