K. Penc

activity

19932026

most citedThe quadrupolar phases of the S=1 bilinear-biquadratic Heisenberg model on the triangular lattice

284 citations · 4.3k across the 108 of their papers we have counts for

collaborators

Showing 1995 · cond-matShow all

4 papers · 2 filters

cond-mat1995★ 119 cited

Shadow band in the one-dimensional large $U$ Hubbard model

Karlo Penc, Karen Hallberg, Frederic Mila +1

We show that the factorized wave-function of Ogata and Shiba can be used to calculate the $k$ dependent spectral functions of the one-dimensional, infinite $U$ Hubbard model, and o…

cond-mat1995★ 32 cited

Propagating S=1/2 particles in S=1 Haldane gap systems

Karlo Penc, Hiroyuki Shiba

Inspired by the recent experiments on Y $_{2 - x}$ Ca $_{x}$ BaNiO $_{5}$ , (J. F. DiTusa {\it et al.}, Phys. Rev. Lett. 73, 1857 (1994)), we discuss the dispersion relation of the $s$ =1/2 par…

cond-mat1995★ 14 cited

Susceptibility of the one-dimensional, dimerized Hubbard model

Frederic Mila, Karlo Penc

We show that the zero temperature susceptibility of the one-dimensional, dimerized Hubbard model at quarter-filling can be accurately determined on the basis of exact diagonalizati…

cond-mat1995★ 60 cited

Spectral function of the 1D Hubbard model in the $U \to + \infty$ limit

Karlo Penc, Frédéric Mila, Hiroyuki Shiba

We show that the one-particle spectral functions of the one-dimensional Hubbard model diverge at the Fermi energy like $∣ ω - ε_{F} ∣^{- 3/8}$ in the $U \to + \infty$ limit. The…

Shadow band in the one-dimensional large U Hubbard model

Propagating S=1/2 particles in S=1 Haldane gap systems

Susceptibility of the one-dimensional, dimerized Hubbard model

Spectral function of the 1D Hubbard model in the U→+∞ limit

Shadow band in the one-dimensional large $U$ Hubbard model

Spectral function of the 1D Hubbard model in the $U \to + \infty$ limit