- Max Planck Institute for Gravitational PhysicsDE902 papers
- Centre National de la Recherche ScientifiqueFR408 papers
- University of BirminghamGB324 papers
- University of GlasgowGB320 papers
- California Institute of TechnologyUS313 papers
- University of Wisconsin–MilwaukeeUS307 papers
- Stanford UniversityUS280 papers
- Cardiff UniversityGB277 papers
- Massachusetts Institute of TechnologyUS277 papers
- University of FloridaUS277 papers
- Syracuse UniversityUS274 papers
- Goddard Space Flight CenterUS273 papers
43 papers · 1 filter
Ground-State and Thermodynamic Properties of the Quantum Mixed Spin-1/2-1/2-1-1 Chain
Takashi Tonegawa, Toshiya Hikihara, Makoto Kaburagi +3
We investigate both analytically and numerically the ground-state and thermodynamic properties of the quantum mixed spin-1/2-1/2-1-1 chain described by the Hamiltonian $H=\sum_{\el…
One-dimensional Heisenberg antiferromagnet in which two S=1/2 and two S=1 spins are arranged alternatively
T. Tonegawa, T. Hikihara, T. Nishino +3
Ground-state and thermodynamic properties of the one-dimensional Heisenberg antiferromagnet in which two S=1/2 and two S=1 spins are arranged alternatively are studied by a quantum…
Chiral BRST Cohomology of N=2 Strings at Arbitrary Ghost and Picture Number
Klaus Junemann, Olaf Lechtenfeld
We compute the BRST cohomology of the holomorphic part of the N=2 string at arbitrary ghost and picture number. We confirm the expectation that the relative cohomology at non-zero…
The hypermultiplet low-energy effective action, N=2 supersymmetry breaking and confinement
Sergei V. Ketov
Some exact solutions to the hypermultiplet low-energy effective action in N=2 supersymmetric four-dimensional gauge field theories with massive `quark' hypermultiplets are discusse…
Mixed spin ladders with exotic ground states
A. K. Kolezhuk, H. -J. Mikeska
We study the "mixed spin" isotropic ladder system having S=1 spins on one leg and S=1/2 spins on the other, with general-type exchange interactions between spins on neighboring run…
An action of N=8 self-dual supergravity in ultra-hyperbolic harmonic superspace
Sinisa Karnas, Sergei V. Ketov
The N-extended self-dual supergravity in the ultra-hyperbolic four-dimensional spacetime of kleinian signature (2+2) is given in the N-extended harmonic superspace. We reformulate…