• Corpus ID: 118443073

Quantum Number Fractionization in Cuprates: U(1) RVB Gauge Theory and Senthil Fisher Constructions

@article{Baskaran2000QuantumNF,
  title={Quantum Number Fractionization in Cuprates: U(1) RVB Gauge Theory and Senthil Fisher Constructions},
  author={Ganapathy Baskaran},
  journal={arXiv: Strongly Correlated Electrons},
  year={2000}
}
  • G. Baskaran
  • Published 22 August 2000
  • Physics
  • arXiv: Strongly Correlated Electrons
We critically look at Senthil Fisher constructions of quantum number fractionization in cuprates. The first construction, while mathematically correct is of limited relevance to cuprates. The second one has a missing local U(1) symmetry. Once this aspect is repaired, it reveals itself as the U(1) RVB gauge theory construction of quantum number fractionization. An approximate local $Z_2$ symmetry arises in the spin sector for a reason very different from Senthil and Fisher's. The charge sector… 

References

Gauge theory of high temperature superconductivity
Superconductivity in the strongly correlated electronic systems described by the Hubbard model for slightly less than half-filled band is shown to arise from the condensation of charge + e holons