scholarly journals Low-energy excitation spectrum of one-dimensional dipolar quantum gases

2008 ◽  
Vol 77 (21) ◽  
Author(s):  
S. De Palo ◽  
E. Orignac ◽  
R. Citro ◽  
M. L. Chiofalo
Keyword(s):  
Excitation Spectrum ◽  
Quantum Gases ◽  
Low Energy ◽  
Energy Excitation ◽  
One Dimensional

Low energy excitation spectrum and Cu(2) spin-lattice relaxation from the singlet correlated band in YBa2Cu4O8

1994 ◽  
Vol 235-240 ◽  
pp. 2257-2258 ◽  
Author(s):  
R. Markendorf ◽  
M.V. Eremin ◽  
S.V. Varlamov ◽  
D. Brinkmann ◽  
M. Mali ◽  
...  
Keyword(s):  
Excitation Spectrum ◽  
Lattice Relaxation ◽  
Low Energy ◽  
Spin Lattice Relaxation ◽  
Energy Excitation ◽  
Spin Lattice

scholarly journals Fine-structure in the low-energy excitation spectrum of a high-Tcsuperconductor by polarization-dependent photoemission

2001 ◽  
Vol 63 (10) ◽  
Author(s):  
R. Manzke ◽  
R. Müller ◽  
C. Janowitz ◽  
M. Schneider ◽  
A. Krapf ◽  
...  
Keyword(s):  
Fine Structure ◽  
Excitation Spectrum ◽  
Low Energy ◽  
Energy Excitation

Threshold singularities in the one-dimensional supersymmetric boson–fermion gas mixture

2018 ◽  
Vol 32 (21) ◽  
pp. 1850221 ◽  
Author(s):  
P. Schlottmann
Keyword(s):  
Spectral Function ◽  
Bethe Ansatz ◽  
Interaction Strength ◽  
Luttinger Liquid ◽  
Low Energy ◽  
Type Model ◽  
Gas Mixture ◽  
Linear Dispersion ◽  
Energy Excitation ◽  
One Dimensional

A one-dimensional gas mixture consisting of bosons and fermions without spin interacting via a repulsive [Formula: see text]-function potential is considered. The model is integrable and soluble via two nested Bethe ansatz, if all particles are assumed to have equal masses and the interaction strength between the bosons and among the bosons and fermions is the same. The low energy excitation spectrum is a two-component Luttinger liquid and can be parametrized by a conformal field theory with conformal charges c = 1. In the low-energy limit, where the band curvature terms in the dispersion can be neglected, the linear dispersion of a Luttinger liquid is asymptotically exact. The spectral function, however, displays deviations from the Luttinger behavior for higher energy excitations. In the neighborhood of the single-particle (hole) energy, the spectral function is represented by an effective X-ray edge type model. Expressions of the critical exponents for the single-hole Green’s function are obtained using the Bethe ansatz solution in the limit of the bosonic gas. The results could be of relevance in the context of ultracold atoms confined to an elongated optical trap.

Low energy excitation of the one-dimensional Kondo-necklace model

1998 ◽  
Vol 245 (1-2) ◽  
pp. 167-171 ◽  
Author(s):  
Yuguang Chen ◽  
Qingshan Yuan ◽  
Hong Chen ◽  
Yumei Zhang
Keyword(s):  
Low Energy ◽  
Energy Excitation ◽  
One Dimensional ◽  
The One

scholarly journals The excitation spectrum of the Bose gas in the Gross–Pitaevskii regime

2020 ◽  
pp. 2060006
Author(s):  
Chiara Boccato
Keyword(s):  
Excitation Spectrum ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Bose Gas ◽  
Low Energy ◽  
Side Length ◽  
Joint Work ◽  
Energy Excitation

We consider a gas of interacting bosons trapped in a box of side length one in the Gross–Pitaevskii limit. We review the proof of the validity of Bogoliubov’s prediction for the ground state energy and the low-energy excitation spectrum. This note is based on joint work with C. Brennecke, S. Cenatiempo and B. Schlein.

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