Zobrazeno 1 - 10
of 343
pro vyhledávání: '"Srivastava, Shashi"'
Autor:
Mitra, Akash, Srivastava, Shashi C. L.
Recently, a linear relationship between product of bound energy, a thermodynamic quantity, of a ground state with system size and square of half-chain entanglement entropy has been established for free fermionic chain with nearest neighbor hopping an
Externí odkaz:
http://arxiv.org/abs/2408.05063
Autor:
Mitra, Akash, Srivastava, Shashi C. L.
Publikováno v:
Phys. Rev. A 110, 012227 (2024)
We study the energy transfer process in the recently proposed sunburst quantum Ising model, which consists of two interacting integrable systems: a transverse Ising chain with a very small transverse field and a finite number of external isolated qub
Externí odkaz:
http://arxiv.org/abs/2406.18258
Autor:
Mitra, Akash, Srivastava, Shashi C. L.
Publikováno v:
Phys. Rev. E 108, 054114 (2023)
We study the non-equilibrium dynamics of an isolated bipartite quantum system, the sunburst quantum Ising model, under interaction quench. The pre-quench limit of this model is two non-interacting integrable systems, namely a transverse ising chain a
Externí odkaz:
http://arxiv.org/abs/2212.12276
Publikováno v:
J. Phys. A: Math. Theor. 55 495201(2022)
We investigate the level spacing distribution for three ensembles of real symmetric matrices having additional structural constraint to reduce the number of independent entries to only $ (n+1)/2 $ in contrast to the $ n(n+1)/2 $ for a real symmetric
Externí odkaz:
http://arxiv.org/abs/2212.00583
Quantum backflow refers to the counterintuitive fact that the probability can flow in the direction opposite to the momentum of a quantum particle. This phenomenon has been seen to be small and fragile for one-dimensional systems, in which the maxima
Externí odkaz:
http://arxiv.org/abs/2211.06539
Autor:
Barbier, Maximilien, Fewster, Christopher J., Goussev, Arseni, Morozov, Gregory, Srivastava, Shashi C. L.
Publikováno v:
J. Phys. A: Math. Theor. 56 138003 (2023)
Comment on "Backflow in relativistic wave equations" by I. Bialynicki-Birula, Z. Bialynicka-Birula, and S. Augustynowicz [Journal of Physics A: Mathematical and Theoretical, volume 55, page 255702 (2022)].
Comment: 2 pages, no figures
Comment: 2 pages, no figures
Externí odkaz:
http://arxiv.org/abs/2210.05368
Publikováno v:
The European Physical Journal B volume 96, Article number: 89 (2023)
We study the spectral properties of a multiparametric system having particle-hole symmetry in random matrix setting. We observe a crossover from Poisson to Wigner-Dyson like behavior in average local ratio of spacing within a spectrum of single matri
Externí odkaz:
http://arxiv.org/abs/2207.14665
Autor:
Srivastava, Shashi Kant
Publikováno v:
The CASE Journal, 2023, Vol. 20, Issue 1, pp. 1-22.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/TCJ-05-2022-0088
Autor:
Pulikkottil, Jethin J., Lakshminarayan, Arul, Srivastava, Shashi C. L., Kieler, Maximilian F. I., Bäcker, Arnd, Tomsovic, Steven
Publikováno v:
Phys. Rev. E 107, 024124 (2023)
A bipartite system whose subsystems are fully quantum chaotic and coupled by a perturbative interaction with a tunable strength is a paradigmatic model for investigating how isolated quantum systems relax towards an equilibrium. It is found that quan
Externí odkaz:
http://arxiv.org/abs/2204.07561
Publikováno v:
In Computers & Security July 2024 142