Sebastian Eggert

Susceptibility of the spin 1/2 Heisenberg antiferromagnetic chain.

Highly accurate results are presented for the susceptibility,

Band gaps of primary metallic carbon nanotubes

\chi (T)

Numerical evidence for multiplicative logarithmic corrections from marginal operators

of the

Impurities in S=1/2 Heisenberg antiferromagnetic chains: Consequences for neutron scattering and knight shift.

s=1/2

Real space imaging of one-dimensional standing waves: direct evidence for a Luttinger liquid.

Heisenberg antiferromagnetic chain for all temperatures, using the Bethe ansatz and field theory methods. After going through a rounded peak,

Properties of a Luttinger liquid with boundaries at finite temperature and size

\chi (T)

Boundary Susceptibility in the Spin-1/2 Chain: Curie-Like Behavior without Magnetic Impurities

approaches its asympotic zero-temperature value with infinite slope.

Boundary Effects on Spectral Properties of Interacting Electrons in One Dimension

Primary metallic or small-gap semiconducting nanotubes are tubes with band gaps that arise solely from breaking the bond symmetry due to curvature. We derive an analytic expression for these gaps by considering how a general symmetry breaking opens a gap in nanotubes with a well-defined chiral wrapping vector. This approach provides a straightforward way to include all types of symmetry-breaking effects, resulting in a simple unified gap equation as a function of chirality and deformations.

ACCURATE DETERMINATION OF THE EXCHANGE CONSTANT IN SR2CUO3 FROM RECENT THEORETICAL RESULTS

Field theory calculations predict multiplicative logarithmic corrections to correlation functions from marginally irrelevant operators. However, for the numerically most suitable model, the spin-\textonehalf{} chain, these corrections have been controversial. In this paper, the spin-spin correlation function of the antiferromagnetic spin-\textonehalf{} chain is calculated numerically in the presence of a next-nearest-neighbor coupling

Chain breaks and the susceptibility of Sr2Cu1-xPdxO3+delta and other doped quasi-one-dimensional antiferromagnets.

{J}_{2}