Spectral density of a one-dimensional quantum Ising model: Gaussian and multi-Gaussian approximations

DOI10.1088/1751-8113/47/33/335201zbMath1304.60045arXiv1402.6858OpenAlexW2033128957MaRDI QIDQ2878639

Eugène Bogomolny, Yasar Yilmaz Atas

Publication date: 4 September 2014

Published in: Journal of Physics A: Mathematical and Theoretical (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1402.6858

zbMATH Keywords

spectral densityquantum many-bodyquantum spin cahins

Mathematics Subject Classification ID

Gaussian processes (60G15) Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs arising in equilibrium statistical mechanics (82B20)

Related Items (6)

Density and spacings for the energy levels of quadratic Fermi operators ⋮ Thermalization of small quantum systems: from the zeroth law of thermodynamics ⋮ Quantum Ising model in transverse and longitudinal fields: chaotic wave functions ⋮ Trace formula for interacting spins ⋮ Many-body-localization transition: sensitivity to twisted boundary conditions ⋮ Spectra and eigenstates of spin chain Hamiltonians

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