Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Bidyut Dey"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-43 (2024)
Abstract Using spread complexity and spread entropy, we study non-unitary quantum dynamics. For non-hermitian Hamiltonians, we extend the bi-Lanczos construction for the Krylov basis to the Schrödinger picture. Moreover, we implement an algorithm ad
Externí odkaz:
https://doaj.org/article/9849db4d5bec4648afc1ae8fb1e6f8d0
Autor:
Diptarka Das, Bidyut Dey
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-26 (2020)
Abstract We globally quench the theory of two dimensional massless fermions (many flavours) with quartic interactions by making the quartic coupling a smooth function of time. Working in a derivative expansion we show that the discrete ℤ2 symmetry
Externí odkaz:
https://doaj.org/article/d583950304e7424fbdb2cc9e7d2b70a5
Publikováno v:
SciPost Physics Core, Vol 6, Iss 1, p 021 (2023)
We evaluate out of time ordered correlators in certain low dimensional quantum systems at zero temperature, subjected to homogenous quantum quenches. We find that when the Lyapunov exponent exists, it can be identified with the quenched energy. We sh
Externí odkaz:
https://doaj.org/article/87af027da9fa4f798cace90885574b38
Publikováno v:
Physical Review
We work perturbatively with an interacting quantum field theory comprised of two distinct scalar fields. In this theory, we introduce a sudden quench of the mass of one of the scalars at time $t_0$. Also, the quartic interaction between the two scala
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddc441cd176cc54c0ae122f15db6fb96
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
INSPIRE-HEP
We use the spread complexity of a time evolved state after a sudden quantum quench in the Lipkin-Meshkov-Glick (LMG) model prepared in the ground state as a probe of quantum phase transition when the system is quenched towards the critical point. By
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a576cf3d88732cc3e7d502dec72a196
Publikováno v:
INSPIRE-HEP
We evaluate out of time ordered correlators in certain low dimensional quantum systems at zero temperature, subjected to homogenous quantum quenches. We find that when the Lyapunov exponent exists, it can be identified with the quenched energy. We sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3db3bd89801f010ad66016c976a3222e
http://arxiv.org/abs/2109.02132
http://arxiv.org/abs/2109.02132
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-26 (2020)
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-26 (2020)
We globally quench the theory of two dimensional massless fermions (many flavours) with quartic interactions by making the quartic coupling a smooth function of time. Working in a derivative expansion we show that the discrete Z2 symmetry in case of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f07f2f315ee492f047b8ed5575c9eaa2
https://doi.org/10.1007/jhep07(2020)107
https://doi.org/10.1007/jhep07(2020)107