Size-dependent low-energy excitations in an alternating spin-1/spin-12antiferromagnetic chain: Spin-wave theory and density-matrix renormalization-group studies

2007 ◽  
Vol 76 (1) ◽  
Author(s):  
S. Mohakud ◽  
Swapan K. Pati ◽  
Seiji Miyashita
Keyword(s):  
Renormalization Group ◽  
Density Matrix ◽  
Spin Wave ◽  
Wave Theory ◽  
Low Energy ◽  
Density Matrix Renormalization Group ◽  
Size Dependent ◽  
Spin Wave Theory ◽  
Density Matrix Renormalization

scholarly journals PHASE DIAGRAM OF ONE-DIMENSIONAL ALKALINE-EARTH COLD FERMIONIC ATOMS

2011 ◽  
Vol 25 (12n13) ◽  
pp. 955-962 ◽  
Author(s):  
H. NONNE ◽  
E. BOULAT ◽  
S. CAPPONI ◽  
P. LECHEMINANT
Keyword(s):  
Phase Diagram ◽  
Renormalization Group ◽  
Density Matrix ◽  
Alkaline Earth ◽  
Charge Density Waves ◽  
Low Energy ◽  
Density Matrix Renormalization Group ◽  
One Dimensional ◽  
Density Matrix Renormalization ◽  
Fermionic Atoms

The phase diagram of one-dimensional alkaline-earth fermionic atoms and ytterbium 171 atoms is investigated by means of a low-energy approach and density-matrix renormalization group calculations. For incommensurate filling, four gapless phases with a spin gap are found and consist of two superconducting instabilities and two coexisting bond and charge density-waves instabilities. In the half-filled case, seven Mott-insulating phases arise with the emergence of four non-degenerate phases with exotic hidden orderings.

Sign in / Sign up

Export Citation Format

Share Document