Slave-particle studies of the electron-momentum distribution in the low-dimensional<i>t</i>-<i>J</i>model
Slave-particle studies of the electron-momentum distribution in the low-dimensional<i>t</i>-<i>J</i>model
The electron-momentum distribution function in the t-J model is studied in the framework of the slave-particle approach. Within the decoupling scheme used in gauge-field and related theories, we treat formally phase and amplitude fluctuations as well as constraints without further approximations. Our result indicates that the electron Fermi surface observed …