The phase diagram of the onedimensional quantum sineGordon system ($\beta ^{2}=4\pi)$ with a linear spatial modulation
Abstract
The onedimensional quantum sineGordon system with a linear spatial modulation is investigated in a special case, $\beta ^{2}$ =4$\pi $. The model is tranformed into a massive Thirring model and then is exactly diagonalized, the energy spetrum of the model is obtained. Our result clearly demonstrates that cancelling the cosine term without any considering is unadvisable.
 Publication:

arXiv eprints
 Pub Date:
 April 2001
 arXiv:
 arXiv:condmat/0104161
 Bibcode:
 2001cond.mat..4161W
 Keywords:

 Condensed Matter  Strongly Correlated Electrons
 EPrint:
 4 pages in tex