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Quantum Simulation Quantum Thermodynamics

Quantum Quenches and Relaxation Dynamics in the Thermodynamic Limit

arXiv
Authors: Krishnanand Mallayya, Marcos Rigol

Year

2017

Paper ID

25318

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

We implement numerical linked cluster expansions (NLCEs) to study dynamics of lattice systems following quantum quenches, and focus on a hard-core boson model in one-dimensional lattices. We find that, in the nonintegrable regime and within the accessible times, local observables exhibit exponential relaxation. We determine the relaxation rate as one departs from the integrable point and show that it scales quadratically with the strength of the integrability breaking perturbation. We compare the NLCE results with those from exact diagonalization calculations on finite chains with periodic boundary conditions, and show that NLCEs are far more accurate.

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  • We implement numerical linked cluster expansions (NLCEs) to study dynamics of lattice systems following quantum quenches, and focus on a hard-core boson model in...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1711.01284 [2] arXiv https://arxiv.org/abs/1711.01284 [3] Publisher https://arxiv.org/abs/1711.01284

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