Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Alexander Avdoshkin"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-29 (2024)
Abstract We study Krylov complexity in various models of quantum field theory: free massive bosons and fermions on flat space and on spheres, holographic models, and lattice models with a UV-cutoff. In certain cases, we observe asymptotic behavior in
Externí odkaz:
https://doaj.org/article/78ec3c8e8cee4dac9c98e98680b907a7
Autor:
Alexander Avdoshkin, Rustem Sharipov
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-20 (2021)
Abstract We consider a holographic model of strongly interacting plasma with a gravitational anomaly. In this model, we compute parity-odd responses of the system at finite temperature and chemical potential to external electromagnetic and gravitatio
Externí odkaz:
https://doaj.org/article/88ca771ab9be4fd5971360bbbb94478d
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 4, Pp 1-15 (2019)
Abstract In quantum field theory with a mass gap correlation function between two spatially separated operators decays exponentially with the distance. This fundamental result immediately implies an exponential suppression of all higher point correla
Externí odkaz:
https://doaj.org/article/8fbcff8373804c3bb061ddfbd14a5c4e
Autor:
Alexander Avdoshkin, Anatoly Dymarsky
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043234 (2020)
We consider growth of local operators under Euclidean time evolution in lattice systems with local interactions. We derive rigorous bounds on the operator norm growth and then proceed to establish an analog of the Lieb-Robinson bound for the spatial
Externí odkaz:
https://doaj.org/article/381af61ff6084bb18a454d0c601d4e2b
Publikováno v:
Physical Review X, Vol 9, Iss 4, p 041017 (2019)
We present a hypothesis for the universal properties of operators evolving under Hamiltonian dynamics in many-body systems. The hypothesis states that successive Lanczos coefficients in the continued fraction expansion of the Green’s functions grow
Externí odkaz:
https://doaj.org/article/a37f7a9f79d14588ba9b48d6b745d940
Autor:
Charles D. Brown, Shao-Wen Chang, Malte N. Schwarz, Tsz-Him Leung, Vladyslav Kozii, Alexander Avdoshkin, Joel E. Moore, Dan Stamper-Kurn
Publikováno v:
Science. 377:1319-1322
The band structure of a crystal may have points where two or more bands are degenerate in energy and where the geometry of the Bloch state manifold is singular, with consequences for material and transport properties. Ultracold atoms in optical latti
Autor:
Zhetao Jia, Matteo Seclì, Alexander Avdoshkin, Walid Redjem, Elizabeth Dresselhaus, Joel Moore, Boubacar Kanté
Publikováno v:
Science advances, vol 9, iss 14
Complex networks play a fundamental role in understanding phenomena from the collective behavior of spins, neural networks, and power grids to the spread of diseases. Topological phenomena in such networks have recently been exploited to preserve the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65ea00209d91c4480215dd14cbcce3ed
http://arxiv.org/abs/2211.12719
http://arxiv.org/abs/2211.12719
Autor:
Dan Moses Stamper-Kurn DELETE, Joel Moore, Alexander Avdoshkin, Vladyslav Kozii, Tsz-Him Leung, Shao-wen Chang, Charles Brown, Malte Nils Schwarz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d40cd9226bc7285229d4d688cfdc89d9
https://doi.org/10.26226/m.6275705c66d5dcf63a311584
https://doi.org/10.26226/m.6275705c66d5dcf63a311584
Publikováno v:
Physical review letters, vol 126, iss 15
We study how the intrinsic anomalous Hall conductivity is modified in two-dimensional crystals with broken time-reversal symmetry due to weak inhomogeneity of the applied electric field. Focusing on a clean noninteracting two-band system without band
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5f04dd9bb10af97c673271862144c35
http://arxiv.org/abs/2010.07322
http://arxiv.org/abs/2010.07322
Publikováno v:
Physical review letters, vol 124, iss 19
The chiral photocurrent or circular photogalvanic effect (CPGE) is a photocurrent that depends on the sense of circular polarization. In a disorder-free, noninteracting chiral Weyl semimetal, the magnitude of the effect is approximately quantized wit