Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Gill, Ankit"'
Autor:
Gill, Ankit, Sarkar, Tapobrata
We investigate the relationship between Krylov complexity and operator quantum speed limits (OQSLs) of the complexity operator and level repulsion in random/integrable matrices and many-body systems. An enhanced level-repulsion corresponds to increas
Externí odkaz:
http://arxiv.org/abs/2408.06855
We show that the characteristic function of the probability distribution associated with the change of an observable in a two-point measurement protocol with a perturbation can be written as an auto-correlation function between an initial state and a
Externí odkaz:
http://arxiv.org/abs/2311.07892
We analyse time evolution of spread complexity (SC) in an isolated interacting quantum many-body system when it is subjected to a sudden quench. The differences in characteristics of the time evolution of the SC for different time scales is analysed,
Externí odkaz:
http://arxiv.org/abs/2308.00636
We study spread complexity and the statistics of work done for quenches in the three-spin interacting Ising model, the XY spin chain, and the Su-Schrieffer-Heeger model. We study these models without quench and for different schemes of quenches, such
Externí odkaz:
http://arxiv.org/abs/2305.12115
We relate the probability distribution of the work done on a statistical system under a sudden quench to the Lanczos coefficients corresponding to evolution under the post-quench Hamiltonian. Using the general relation between the moments and the cum
Externí odkaz:
http://arxiv.org/abs/2304.09636
We study fidelity out-of-time-order correlators (FOTOCs) in an extended Lipkin-Meshkov-Glick model and demonstrate that these exhibit distinctive behaviour at quantum phase transitions in both the ground and the excited states. We show that the dynam
Externí odkaz:
http://arxiv.org/abs/2212.03682
We study information theoretic quantities in models with three and four spin interactions. These models show distinctive characteristics compared to their nearest neighbour counterparts. Here, we quantify these in terms of the Nielsen complexity in s
Externí odkaz:
http://arxiv.org/abs/2207.14090
We study Nielsen's circuit complexity in a periodic harmonic oscillator chain, under single and multiple quenches. In a multiple quench scenario, it is shown that the complexity shows remarkably different behaviour compared to the other information t
Externí odkaz:
http://arxiv.org/abs/2206.03366
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Akademický článek
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