Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Bieniasz, Krzysztof"'
Autor:
Brown, James, Coons, Marc P., Lloyd, Erika, Fleury, Alexandre, Bieniasz, Krzysztof, Senicourt, Valentin, Zaribafiyan, Arman
We draw attention to a variant of the iterative qubit coupled cluster (iQCC) method that only uses Clifford circuits. The iQCC method relies on a small parameterized wave function ansatz, which takes form as a product of exponentiated Pauli word oper
Externí odkaz:
http://arxiv.org/abs/2211.10501
Autor:
Senicourt, Valentin, Brown, James, Fleury, Alexandre, Day, Ryan, Lloyd, Erika, Coons, Marc P., Bieniasz, Krzysztof, Huntington, Lee, Garza, Alejandro J., Matsuura, Shunji, Plesch, Rudi, Yamazaki, Takeshi, Zaribafiyan, Arman
Tangelo [link: https://github.com/goodchemistryco/Tangelo] is an open-source Python software package for the development of end-to-end chemistry workflows on quantum computers, released under Apache 2.0 license. It aims to support the design of succe
Externí odkaz:
http://arxiv.org/abs/2206.12424
The community currently lacks a complete understanding of how resonant inelastic x-ray scattering (RIXS) experiments probe the electron-phonon ($e$-ph) interaction in solids. For example, most theoretical models of this process have focused on disper
Externí odkaz:
http://arxiv.org/abs/2201.04577
Publikováno v:
SciPost Phys. 11, 062 (2021)
Resonant inelastic X-ray scattering (RIXS) is used increasingly for characterizing low-energy collective excitations in materials. RIXS is a powerful probe, which often requires sophisticated theoretical descriptions to interpret the data. In particu
Externí odkaz:
http://arxiv.org/abs/2011.05400
Publikováno v:
Phys. Rev. B 100, 125109 (2019)
Transition metal oxides are a rich group of materials with very interesting physical properties that arise from the interplay of the charge, spin, orbital, and lattice degrees of freedom. One interesting consequence of this, encountered in systems wi
Externí odkaz:
http://arxiv.org/abs/1908.02232
Publikováno v:
SciPost Phys. 7, 066 (2019)
We study the problem of a single hole in an Ising antiferromagnet and, using the magnon expansion and analytical methods, determine the expansion coefficients of its wave function in the magnon basis. In the 1D case, the hole is "weakly" confined in
Externí odkaz:
http://arxiv.org/abs/1809.07120
Publikováno v:
Physical Review B 95, 235153 (2017)
We present a quasi-analytical solution of a spin-orbital model of KCuF$_{3}$, using the variational method for Green's functions. By analyzing the spectra for different partial bosonic compositions as well as the full solution, we show that hole prop
Externí odkaz:
http://arxiv.org/abs/1706.06071
Publikováno v:
Physical Review B 94, 085117 (2016)
We develop an $e_g$ orbital, $t$-$J$-like model of a single charge doped into a two-dimensional plane with ferromagnetic spin order and alternating orbital order, and present its solution by Green's functions in the variational approximation framewor
Externí odkaz:
http://arxiv.org/abs/1612.08009
Publikováno v:
Acta Physica Polonica A 130, 659 (2016)
We present a calculation of the spectral properties of a single charge doped at a Cu($3d$) site of the Cu-F plane in KCuF$_{3}$. The problem is treated by generating the equations of motion for the Green's function by means of subsequent Dyson expans
Externí odkaz:
http://arxiv.org/abs/1612.08005
Autor:
Bieniasz, Krzysztof, Oleś, Andrzej M.
Publikováno v:
Acta Phys. Polon. A 127, 269 (2015)
We introduce a one-dimensional model for a CuO chain, with holes and $S=1/2$ spins localized in $3d_{x^2-y^2}$ orbitals, and $p_\sigma$ oxygen orbitals without holes in the ground state. We consider a single hole doped at an oxygen site and study its
Externí odkaz:
http://arxiv.org/abs/1503.08201