Zobrazeno 1 - 10
of 40
pro vyhledávání: '"operator: local"'
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 49, Iss 2 (2020)
In the paper a local and a semi-local convergence of combined iterative process for solving nonlinear operator equations is investigated. This solver is built based on Newton solver and has R-convergence order 1.839.... The radius of the convergence
Externí odkaz:
https://doaj.org/article/53fd24f913d64a93909953501276d948
Scalar-fermion models, such as the Gross-Neveu-Yukawa model, admit natural $1d$ defects given by the exponential of a scalar field integrated along a straight line. In $4-\varepsilon$ dimensions the defect coupling is weakly relevant and the setup de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b28496a5b0002454830dfc47aba5a817
Autor:
Niccoli, G., Terras, V.
This paper is a continuation of [1], in which a set of matrix elements of local operators was computed for the XXZ spin-1/2 open chain with a particular case of unparallel boundary fields. Here, we extend these results to the more general case in whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f59f2cfc9a91fcb23579bf5ef803813
http://arxiv.org/abs/2208.10097
http://arxiv.org/abs/2208.10097
Publikováno v:
Journal of High Energy Physics
We use the method of Lightcone Conformal Truncation (LCT) to obtain form factors and spectral densities of local operators $\mathcal{O}$ in $\phi^4$ theory in two dimensions. We show how to use the Hamiltonian eigenstates from LCT to obtain form fact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cd0ec499d1776830ac9719660aa6854
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Journal of Physics A: Mathematical and Theoretical
Journal of Physics A: Mathematical and Theoretical, 2022, 55 (40), pp.405203. ⟨10.1088/1751-8121/ac7ca1⟩
Journal of Physics A: Mathematical and Theoretical, 2022, 55 (40), pp.405203. ⟨10.1088/1751-8121/ac7ca1⟩
In this paper we continue our derivation of the correlation functions of open quantum spin 1/2 chains with unparallel magnetic fields on the edges; this time for the more involved case of the XXZ spin 1/2 chains. We develop our study in the framework
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dd142a21968b98951a2f104e0b142fe
http://arxiv.org/abs/2202.12870
http://arxiv.org/abs/2202.12870
Autor:
Denis Karateev
Publikováno v:
Journal of High Energy Physics
We study two-point functions of local operators and their spectral representation in UV complete quantum field theories in generic dimensions focusing on conserved currents and the stress-tensor. We establish the connection with the central charges o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::058b83240f48e69a15aeac3ab72ae31d
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Physical Review Letters
In two-dimensional Floquet systems, many-body localized dynamics in the bulk may give rise to a chaotic evolution at the one-dimensional edges that is characterized by a nonzero chiral topological index. Such anomalous dynamics is qualitatively diffe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1560735d3e100ebd86ba07a8c8fe704d
https://hal.archives-ouvertes.fr/hal-03361151
https://hal.archives-ouvertes.fr/hal-03361151
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-51 (2021)
JHEP
Journal of High Energy Physics, 2021, 09, pp.174. ⟨10.1007/JHEP09(2021)174⟩
JHEP, 2021, 09, pp.174. ⟨10.1007/JHEP09(2021)174⟩
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-51 (2021)
JHEP
Journal of High Energy Physics, 2021, 09, pp.174. ⟨10.1007/JHEP09(2021)174⟩
JHEP, 2021, 09, pp.174. ⟨10.1007/JHEP09(2021)174⟩
We apply the theory of harmonic analysis on the fundamental domain of $SL(2,\mathbb{Z})$ to partition functions of two-dimensional conformal field theories. We decompose the partition function of $c$ free bosons on a Narain lattice into eigenfunction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd6b1037cf0cbd9ca5b48b1d7e8653ed
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Journal of High Energy Physics
We combine the methods of Hamiltonian Truncation and the recently proposed generalisation of the S-matrix bootstrap that includes local operators to determine the two-particle scattering amplitude and the two-particle form factor of the stress tensor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab678395c33246556fd30cf955d8ad90
https://hal.archives-ouvertes.fr/hal-03315955
https://hal.archives-ouvertes.fr/hal-03315955
Autor:
Niccoli, G.
In this first paper, we start the analysis of correlation functions of quantum spin chains with general integrable boundary conditions. We initiate these computations for the open XXX spin 1/2 quantum chains with some unparallel magnetic fields allow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::badb99315798b4b9409b5c3d2d1bc786
http://arxiv.org/abs/2105.07992
http://arxiv.org/abs/2105.07992