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of 61
pro vyhledávání: '"Rajak, Atanu"'
We explore the phenomena of prethermalization in a many-body classical system of rotors under aperiodic drives characterised by waiting time distribution (WTD), where the waiting time is defined as the time between two consecutive kicks. We consider
Externí odkaz:
http://arxiv.org/abs/2408.11109
Autor:
Rajak, Atanu, Chakrabarti, Bikas K
Motivated by the recent development of quantum technology using quantum annealing technique and the recent works on the static properties of the Sherrington-Kirkpatrick (SK) spin glass model, we study quantum annealing of the spin glass model by tuni
Externí odkaz:
http://arxiv.org/abs/2309.11822
In this review, after providing the basic physical concept behind quantum annealing (or adiabatic quantum computation), we present an overview of some recent theoretical as well as experimental developments pointing to the issues which are still deba
Externí odkaz:
http://arxiv.org/abs/2207.01827
We will review the results for stochastic learning strategies, both classical (one-shot and iterative) and quantum (one-shot only), for optimizing the available many-choice resources among a large number of competing agents, developed over the last d
Externí odkaz:
http://arxiv.org/abs/2203.06110
Periodically driven (Floquet) systems are said to prethermalize when their energy absorption is very slow for long time. This effect was first discovered in quantum spin models, where the heating rate is exponentially small in the ratio between the d
Externí odkaz:
http://arxiv.org/abs/2108.11421
Publikováno v:
Phys. Rev. B 104, 075161 (2021)
Having established the fact that interacting classical kicked rotor systems exhibit long-lived prethermal phase with quasi-conserved average Hamiltonian before entering into chaotic heating regime, we use spatio-temporal fluctuation correlation of ki
Externí odkaz:
http://arxiv.org/abs/2102.12622
Autor:
Rajak, Atanu, Dana, Itzhack
Publikováno v:
Phys. Rev. E 102, 062120 (2020)
We demonstrate that stability and chaotic-transport features of paradigmatic nonequilibrium many-body systems, i.e., periodically kicked and interacting particles, can deviate significantly from the expected ones of full instability and normal chaoti
Externí odkaz:
http://arxiv.org/abs/2002.05612
Autor:
Nag, Tanay, Rajak, Atanu
Publikováno v:
Phys. Rev. B 104, 134307 (2021)
We drive periodically a two-dimensional diamond-octagon lattice model by switching between two Hamiltonian corresponding two different magnetic flux piercing through diamond plaquette to investigate the generation of topological flat bands. We show t
Externí odkaz:
http://arxiv.org/abs/2001.01378
Publikováno v:
Phys. Rev. B 100, 100302 (2019)
We introduce well-defined characterizations of prethermal states in realistic periodically driven many-body systems with unbounded chaotic diffusion of the kinetic energy. These systems, interacting arrays of periodically kicked rotors, are paradigma
Externí odkaz:
http://arxiv.org/abs/1905.00031
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